Help talk:Converting video

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regarding # 1.1 ffmpeg2theora[edit]

  • It didn't work for me while using version 0.16 on Windows XP:

"ffmpeg2theora file.avi".

  • I needed to type "ffmpeg2theora-0.16.exe file.avi".

(unsigned, by Logictheo)

RAD[edit]

Does it stand for "Rapid application development"? Logictheo 11:22, 1 December 2006 (UTC)

You might be more likey to find an answer to this at the RAD Game Tools' website. Jecowa 08:11, 1 December 2007 (UTC)

ffmpeg2theora and MPlayer OS X do not work[edit]

On 1.1 is mentioned "ffmpeg2theora is probably the most popular converter ...", but I did not have much success with it with my Macintosh computer OS 10.4.10.

I downloaded the binary of ffmpeg2theora-0,19 for macos x(universal) from the page http://www.v2v.cc/~j/ffmpeg2theora/download.html I installed it on my computer, but I could not find anywhere on the disk the installed file. Contact with the writer of the software did not solve this problem but he had an other piece of software where he was working on. Available from http://v2v.cc/~j/Simple%20Theora%20Encoder.dmg That program did not work with a Quicktime .mov file. For that reason I had to convert the QuickTime file first with QuickTime Pro to a MPEG-4 file and then the Simple Theora Encoder.

The next step was that I wanted to see the .ogg file on my computer.

On page http://commons.wikimedia.org/wiki/Commons:Media_help/Macintosh is mentioned that to play sound files in Ogg Vorbis and video files in Ogg Theora on a Mac computer, you only need to download and install ... MPlayer OS X. I did (version 2.0b9r5). As my own generated .ogg file did not play, I downloaded the file Apollo_15_splashdown.ogg? as mentioned on page http://commons.wikimedia.org/wiki/Image:Apollo_15_splashdown.ogg  In MPlayer I get only the sound and not the video.

In the list of bugs I found that a complaint submitted on 2006-02-18 says This file from Wikipedia plays far too fast: http://upload.wikimedia.org/wikipedia/commons/1/19/Universal_declaration_of_human_rights_VN.ogg

I tried that file and indeed it still plays too fast one and a half year after the complaint was summitted.

Further I read from users-forum that the program can affect other programs as far as the sound is concerned.

My conclusion: For Macintosh there is only beta-type software that does not work properly.

My question: Is there other (commercial or shareware) software that works to convert to .ogg files and that is able to play these files. I want to see something working before I upload files to Wiki. --Wouter 22:14, 19 August 2007 (UTC)

Yes, the installer of ffmpeg2theora for Macintosh is overly complicated and incompetent. I had manually install the thing. I will post instructions. There is easier software with a GUI now. Although it is easier to use than ffmpeg2theora and more compatible, it has much fewer options, and the files it is more compatible with look horible once converted to OGG. As long as your input is ecoded with MPEG, it will be fine, though. Here's a link for the GUI software Help:Converting_video#SimpleTheoraEncoder. Jecowa 10:32, 30 November 2007 (UTC)
Oh, yes there is commercial software, You can try QuickTime Pro with the Theora QuickTime plug-ins (I haven't tested this, though, as I am too cheap). You can also use those plug-ins with iMove, but you don't have very many options using the Theora plug-ins with iMovie. You can't choose any audio options. The only video options you get are video quality, data rate, frame rate, key frame rate, sharpness, and optimization. I guess that's quite a bit, but I would trade a few of those for video resolution. It's pretty dumb to convert a 320x240 MPEG into a 720x480 OGG. I agree with you that Theora is beta-quality software. Ogg supporters talk about "freedom" while denying us the freedom to select video codecs ourselves. Jecowa 08:02, 1 December 2007 (UTC)

Software feature[edit]

Video conversion should be built into Mediawiki. Upload any format and it will convert to ogg theora internally. — Omegatron 17:26, 22 September 2007 (UTC)

Yes, users should be encouraged to convert themselves (to save server resources), but the conversion process is too complicated for many people. Jecowa 10:24, 30 November 2007 (UTC)
+1 - Some use cases (free to adapt etc.) - KTucker (talk) 22:55, 14 November 2011 (UTC)

Looping[edit]

How do you loop video with the ffmpeg2theora application? Jecowa 11:54, 30 November 2007 (UTC)

ffmpeg2theora and audio[edit]

ffmpeg2theora is converting video just fine, but it is not converting any of the audio channels of the video files that I tell it to convert. Is ffmpeg2theora able to convert the audio channels of video files? If so, what codecs does it support? If not, how is audio added to files converted with ffmprg2theora? Jecowa 07:41, 1 December 2007 (UTC)

This blows. I'm sticking with animated GIFs. Jecowa 03:54, 22 December 2007 (UTC)

Feedback[edit]

I had a lot of problems trying to convert videos with VLC. Thanks to this site I've tried ffmpeg2theora and it worked immediately. Thanks! --Flominator 18:17, 13 December 2007 (UTC)

conversion fail[edit]

While most of the programs and examples here just don't work for me, a few of them (the newest version of ffmpeg2theora-0.21, and Mux) convert with some sort of audio offset problem. I'm trying to convert this video (http://www.kunsan.af.mil/shared/media/document/AFD-070914-043.wmv); can anybody give me some suggestions? — pd_THOR | =/\= | 02:53, 10 August 2008 (UTC)

I only converted videos once, but I used the SUPER video converter without problems. Waldir talk 20:29, 12 August 2008 (UTC)

Ogg videos should use "ogv" extension instead of "ogg"[edit]

Xiph (the foundation developing Ogg codecs) has deprecated the use of ".ogg" for videos and recommends ".ogv", see MIME Types and File Extensions on the Xiph Wiki. This has also been ratified in an RFC.

So, all the newer videos on Commons should use the "ogv" extension. If no one objects, I will adjust this page (and others) and replace "ogg" with "ogv". Robin Stocker (talk) 15:01, 10 September 2008 (UTC)

OMG[edit]

Ok, I got MediaCoder to convert a video to ogg... then? Whato do I have to do? Is there "any" help page? I am not very familiar with video convertion, can anybody help? --Sailko (talk) 08:56, 17 October 2008 (UTC)

If you did the conversion, now you can just upload. See Commons:Upload. Superm401 - Talk 07:21, 26 October 2008 (UTC)

OggConvert[edit]

what about this tool? i think it's a great one for the normal user. Hidro (talk) 23:40, 7 November 2008 (UTC)

It is a pretty user friendly tool with its graphical user interface. The latest (stable) version as of today I think is 0.3.1. It can't convert to a different video resolution as FireFogg can though. Anyway there are some experimental work for this to be ported to the Windows Operating Systems, although it requires 3 steps to install(not very user friendly install procedure on Windows) Logictheo (talk) 21:40, 28 January 2010 (UTC)

Seeking help using online solutions[edit]

I'm trying to convert an AVI file to OGG for Commons. The file is eleven seconds long, 7.69 MB on disk, 640 x 424 pixels, and comes from a Nikon D90. It contains both audio and video. I tried the two online solutions

The first one, mux, uploaded the file and after some minutes produced an ogg file. Unfortunately it had no video, but only audio. (I've already uploaded a sound recording and have no need of this.)

The second one, media-convert, uploaded the file and very quickly produced an ogg file. Unfortunately, the 6 kB ogg file has a length of 0 seconds and contains no video or audio. I also tried using media-convert to make a WAV file (it worked fine) and then convert the WAV to OGG (it was still 6 kB, 0 seconds).

So the two sites I tried because they sounded simple didn't work. Any suggestions?

Fg2 (talk) 11:32, 10 January 2009 (UTC)

The first seems to be dead; I have hidden the link to it. The second one has given me similar problems and needs to be reviewed to see if it is actually capable of producing a decent conversion. If anyone knows of any other sites, please provide a link. Richard001 (talk) 10:30, 18 May 2009 (UTC)
Update: media-convert worked for me just then. Seems that it's just a little inconsistent, as you come to expect from free online file converters and rippers. Richard001 (talk) 10:52, 18 May 2009 (UTC)

Commons video is disaster[edit]

I have just one word for what I am experiencing - disaster. There needs to be a lot of work done to make uploading and playing videos on Commons usable. Hope the new usability project (usability.wikimedia.org) will address some issues.--Kozuch (talk) 17:37, 3 March 2009 (UTC)

This might help: Category:Commons video resources. Thanks for the usability link. I did not know of it. --Timeshifter (talk) 05:00, 4 March 2009 (UTC)
There are few media-related ideas on the original Meta talk page.--Kozuch (talk) 23:18, 4 March 2009 (UTC)
Do you have a link for that Meta talk page? --Timeshifter (talk) 10:21, 5 March 2009 (UTC)

MediaCoder[edit]

Could we get some instructions for this? I don't find this program very easy to use and the wiki doesn't seem to be very complete. Richard001 (talk) 10:33, 18 May 2009 (UTC)

The English Wikipedia article seems to hint that it is adware --Keith111 (talk) 04:28, 13 September 2009 (UTC).

I removed the open source claim for MediaCoder. I left a html comment for anyone who knows more to clarify my rewording though. I am not sure why its "open-source"-ness is important though, does it affect the "freeness" of the videos it creates? I have used closed source SUPER without worrying about this. Is it not sufficient that the output format (OGG or Theora) is acceptable to Commons? -84user (talk) 19:51, 19 October 2009 (UTC)

A more general page on video[edit]

A Commons page about video in general, e.g. Help:Video (currently a redirect) is needed. I have thrown down some ideas at User:Richard001/Commons:Video draft, but I haven't worked on it for a while. If anyone is able to take up the task please do. Richard001 (talk) 09:09, 19 May 2009 (UTC)

In case anyone is wondering, the draft suggested above became Commons:Video and part of Help:Converting video, and Help:Video still redirects to Help:Converting video. -84user (talk) 17:09, 1 January 2010 (UTC)

Audio problems[edit]

Another solution is to first simply rencode audio without modifing video with ffmpeg:

ffmpeg -i source -vcodec copy -acodec pcm_s16le -ac 2 target

ffmpeg2theora really doesn't like mono u8 pcm audio, which unfortunately is widely used by compact cameras.

Gonioul (talk) 10:41, 4 October 2009 (UTC)

converting animated GIFs to Theora OGG[edit]

I managed to convert animated GIFs to Theora OGG video files, but I am unsure if this is a good way to do it. Here is how, in case anyone else is trying to do the same. I could not find this mentioned in the help files here.

On Windows Vista I already had IrfanView, SUPER, VirtualDub, ffdshow and VLC version 1.0.1 Goldeneye. However, except for SUPER, none of these could convert GIFs for one reason or another, or else I could not find the right options. SUPER does convert a GIF to an OGV but I could not find how to adjust the frame rate and some ultra-fast pop-up reported that something had crashed.

What gave me more options was to use IrfanView and/or gifsicle ([1]) to extract all the frames from a GIF, and then to use ffmpeg2theora-0.25.exe to combine the frames into an OGV.

Problem Some animated GIFs have frames that are not constant in height and width. Using IrfanView to "extract all frames" is then a mistake, because ffmpeg2theora-0.25.exe will either crash or output incorrectly rendered OGV files. You can manually "fix" the sizes by extending the canvas, but that changes the palette, which causes ffmpeg2theora other problems. You can of course import palette to fix this, but for more than a few frames this will be tedious work.

Solution Use the gifsicle option --unoptimize to first make all the GIF's frames the same size. Then use gifsicle option --explode to extract all the frames. Now the frames are all the same size and have the same palette.

Now, gifsicle names these frame files as "text.nnn" where nnn is a number. This is a problem on Windows as ffmpeg2theora-0.25.exe simply refuses to accept such files as valid. Add ".gif" at the end of each, and ffmpeg2theora is happy. On Linux or Unix such renaming is trivial, but how to do it on Windows without requiring the user to download and install yet more programs? Luckily IrfanView has a batch rename tool that does exactly this.

Finally, here is an example of how I converted a largish GIF to a small OGV:

A0. Use gifsicle to create an unoptimized version of the GIF like this:

  gifsicle --unoptimize < PIA07712.gif > unoptimized.gif

A1. explode the unoptimized GIF into frames:

  gifsicle --output gifun --explode < unoptimized.gif

A2. use IrfanView's batch conversion/rename tool to give ".GIF" extensions to all the numbered files:

launch IrfanView, click File / Batch conversion/rename,
under "Work as" click the circle next to "Batch rename"
inside "Name pattern" under "Batch rename settings" type (without quotes):
"un###.gif"
If you have more than 999 frames, type instead "un####.gif".
Inside "Search in" find the directory with your newly extracted GIFs
select all that you wish to rename
click the Add button
inside "Output directory for result files"
click the button labeled "Use current ('look in') directory"
click the Start Batch button
once the renaming is finished click the Exit button

A3. Use ffmpeg2theora to construct the video file:

  ffmpeg2theora-0.25.exe --framerate 2 un%03d.gif --output full.ogv
Conversion is now finished and full.ogv should be a playable video file.
(change %03d to %04d if you typed "un####.gif" above.)
Choose a framerate that makes the video play at the best speed;
25 will be too fast for most animated GIFs, so try 1, 2, and so on.
Use the videoquality option to choose a different quality:
"--videoquality 10" is best while "--videoquality 1" is least

A4. I as able to test whether the full.ogv played Ok by dragging it to the Firefox browser, or by opening it with VLC.

-84user (talk) 06:46, 18 October 2009 (UTC)

Do you know how to select multiple files in the CMD window in Windows? I tried doing ffmpeg2theora-0.25.exe --framerate 2 *.gif -o output.ogv and ffmpeg2theora displayed an error message.
[image2 @ 0x1296fc0]Could not find codec parameters (Video: gif, yuv420p) Unable to decode input.
mahanga (talk) 18:57, 8 November 2009 (UTC)

The only way I know is with the numbered files syntax, like this:

ffmpeg2theora-0.25.exe --framerate 2 p%04d.gif -o output.ogv

which should take as input, files p0001.gif, p0002.gif and so on in sequence. The sequence does not have to start at 1, but there must be no missing frames. -84user (talk) 21:48, 8 November 2009 (UTC)

SUPER directly converts Quicktime movie to OGG[edit]

I just used SUPER on Windows Vista to convert this short movie from NASA to File:Prometheus collides with F ring PIA08397.ogv. No audio was present. I just dragged the movie file to SUPER, selected output container ogg, video codec theora and clicked Encode. I have added SUPER to the help page. -84user (talk) 01:12, 20 October 2009 (UTC)

It's good to have another alternative. I was unable to convert it using firefogg. mov support has been kinda iffy using it so far. mahanga (talk) 01:49, 20 October 2009 (UTC)

Ooops, I did not notice your reply there! I just added my Firefogg experiences below. Although I have created and converted other video types, for conversion to Theora I have only ever (and only in the last 48 hours) tried ffmpeg2theora (mostly good), SUPER (less good but mostly works), and now Firefogg (mostly fails with Quicktime, might be Ok for MPEG). -84user (talk) 02:52, 20 October 2009 (UTC)

Like many of the programs here, Firefogg uses ffmpeg2theora as its backend. It seems ffmpeg2theora has some problems with MOV files, especially when they're 15fps or less. I was able to convert the mov you linked (and another one I was having difficulty with) using GFrontend ffmpeg2theora 2007.2 Final. The programs is a couple years old and uses an older version of ffmpeg2theora but it did it's job. mahanga (talk) 16:25, 28 October 2009 (UTC)
Just a quick update. I was not able to convert the video using ffmpeg2theora 0.25. Using ffmpeg2theora 0.24, which is about 7 months old, converts the mov file successfully. Looks like it's a bug when the video has variable framerates. A fix is in SVN [2]. I think for mov files, I'd recommend using the older version 0.24. mahanga (talk) 20:01, 2 November 2009 (UTC)

Firefogg performance[edit]

Here are my test results after installing the Firefogg extension on Firefox 3.5.3 under Windows Vista. Quick summary: it converts MPEG files Ok, but Quicktime poorly.

Test 1. X mark.svg Not OK how well does it convert Quicktime using default settings?

download PIA08397_full_movie.mov from http://photojournal.jpl.nasa.gov/animation/PIA08397
(I chose a Quicktime movie that has been successfully converted by ffmpeg2theora)
In Firefox browse to http://firefogg.org/make/ and click on select new file
choose the file PIA08397_full_movie.mov just downloaded
click Save Ogg
examine the saved OGG file, and I found:
(a) the OGG was far too small (and poor quality)
(b) it has the wrong frame rate (25 instead of the original 6)

Test 2. X mark.svg Not OK how well does it convert Quicktime with best settings?

download PIA08397_full_movie.mov from http://photojournal.jpl.nasa.gov/animation/PIA08397
(I chose a movie file that has already been successfully converted using ffmpeg2theora)
In Firefox browse to http://firefogg.org/make/ and click on select new file
choose the file PIA08397_full_movie.mov I just downloaded
click "Preset: Custom settings" and change it to "High Quality Theora Vorbis 1080p max width"
click "Basic quality and resolution control" and make these changes
set quality to the maximum 10
leave video width and height at 400
click Advanced video editing controls and make these changes
set Video bit rate to the maximum 2757
set the frame rate to the minimum 12
click Advanced audio encoding controls and click the No Audio checkbox
click Save Ogg, and I found:
(a) the OGG was still too small
(b) on some settings ffmpeg2theora crashed
(c) Firefogg hangs at "100% - Transcoded"


Test 3. ✓OK how well does it convert MPEG with default settings?

download PIA08397_full_movie.mov from http://photojournal.jpl.nasa.gov/animation/PIA08397
use the SUPER program to convert it to a 298 kilobyte MPEG: PIA08397_full_movie.mpg
In Firefox browse to http://firefogg.org/make/ and click on select new file
choose the file PIA08397_full_movie.mpg
click Save Ogg, and I found:
(a) the OGG was 170 KB
(b) the OGG movie played Ok inside Firefox and in VLC
✓OK I repeated this test 3 but I selected "Low bandwidth" and it created a 55 KB OGG movie, also playable
X mark.svg Not OK I repeated this test 3 but I selected "High quality" and ffmpeg2theora crashed each time


Test 4. X mark.svg Not OK how does it handle ffmpeg2theora crashes?

download a Quicktime movie file known to crash ffmpeg2theora, for example PIA08262_full_movie.mov from NASA
In Firefox browse to http://firefogg.org/make/ and click on select new file
choose the file PIA08262_full_movie.mov just downloaded
click Save Ogg
when ffmpeg2theora crashes (or hangs), click the "X" in the top right of the Firefogg dialog window
click Ok when the dialog asks "Are you sure you want to cancel?"
the dialog window then reports "Sorry we do not yet support cancel on windows"
this left that page unusable until I reloaded it and started again.

-84user (talk) 02:38, 20 October 2009 (UTC)

Good testing, 84user. Firefogg has worked well using some video I've taken with my digital camera (.avi files). I did a couple tests using sample files from Apple and it transcoded them successfully. Ideally, with Firefogg soon becoming implemented on Commons, we should have some testing done on which files work best and which don't. mahanga (talk) 19:05, 20 October 2009 (UTC)

Tests and thoughts[edit]

Here are some of my tests and thoughts. -84user (talk) 16:43, 6 November 2009 (UTC)

Convert OGV to animated GIF[edit]

I was asked if I knew how to convert OGV media to animated GIF. Answer: not at first, but here is what happened while trying. Summary: one-step SUPER converts poorly; two-step via sequence of images is better but only for some videos.

I tested these OGV input files (Firefox 3.5+ plays all with no problem):

1. File:Something-for-cheese.ogg, 13 seconds, 320×120 pixels, 10 fps
2. File:Mars Phoenix Sol 151 weather.ogv, an upscaled OGV I created from NASA raw images, 4 seconds, 240×416 pixels, 1 fps, 54kbps
3. File:Ap16_rover.ogg, 15 seconds, 320×240 pixels, 30 fps

Results using program SUPER to convert direct to GIF and to a sequence of images:

Test file ; direct to GIF? ; to sequence of frames?
--------- ; --------------; ----------------------
1. ...... ; distorted .... ; WORKS but letter-boxed to 128 pixels height
2. ...... ; distorted .... ; FAILS: missing key frames
3. ...... ; poor quality . ; WORKS

Because SUPER can convert some OGV files to a sequence of images, I next tried to use gifsicle to create a GIF from those SUPER-converted images.

I first had to use IrfanView's batch function to convert all the PNG files to GIF.

To convert all the images extracted from File:Something-for-cheese.ogg I used this command line:

gifsicle.exe --delay 50 s0001.gif s0002.gif s0003.gif s0004.gif s0005.gif s0006.gif s0007.gif s0008.gif s0009.gif s0010.gif s0011.gif s0012.gif s0013.gif s0014.gif s0015.gif s0016.gif s0017.gif s0018.gif s0019.gif s0020.gif s0021.gif s0022.gif s0023.gif s0024.gif s0025.gif s0026.gif s0027.gif s0028.gif s0029.gif s0030.gif s0031.gif s0032.gif s0033.gif s0034.gif s0035.gif s0036.gif s0037.gif s0038.gif s0039.gif s0040.gif s0041.gif s0042.gif s0043.gif s0044.gif s0045.gif s0046.gif s0047.gif s0048.gif s0049.gif s0050.gif s0051.gif s0052.gif s0053.gif s0054.gif s0055.gif s0056.gif s0057.gif s0058.gif s0059.gif s0060.gif s0061.gif s0062.gif s0063.gif s0064.gif s0065.gif s0066.gif s0067.gif s0068.gif s0069.gif s0070.gif s0071.gif s0072.gif s0073.gif s0074.gif s0075.gif s0076.gif s0077.gif s0078.gif s0079.gif s0080.gif s0081.gif s0082.gif s0083.gif s0084.gif s0085.gif s0086.gif s0087.gif s0088.gif s0089.gif s0090.gif s0091.gif s0092.gif s0093.gif s0094.gif s0095.gif s0096.gif s0097.gif s0098.gif s0099.gif s0100.gif s0101.gif s0102.gif s0103.gif s0104.gif s0105.gif s0106.gif s0107.gif s0108.gif s0109.gif s0110.gif s0111.gif s0112.gif s0113.gif s0114.gif s0115.gif s0116.gif s0117.gif s0118.gif s0119.gif s0120.gif s0121.gif s0122.gif s0123.gif > somechee.gif

gifsicle reported this warning:

gifsicle.exe: warning: so many colors that local colormaps were required
gifsicle.exe: (You may want to try '--colors 256'.)

and created a nearly 2 megabyte GIF, which however, both IrfanView and Firefox could play (but colour artifacts were present).

Conclusions (after more tests):

  • it seems possible but inadvisable for large numbers of frames.
  • SUPER PART-WORKS sometimes: it converts OGV to GIF only with a limited set of scale sizes and aspect ratios
  • SUPER FAILS sometimes: it converts some OGV to sequence of diff-images but without key frames
  • gifsicle requires the OGV be first split into separate frames

-84user (talk) 16:43, 6 November 2009 (UTC)

ffmpeg2theora 0.25+svn16605[edit]

I saw User:Mahanga's note above about problems with ffmpeg2theora 0.25.

I used both the normal 0.25 and the latest preview Windows binary from http://v2v.cc/~j/ffmpeg2theora/download.html that identifies itself as:

ffmpeg2theora 0.25+svn16605 - Xiph.Org libtheora 1.1 20090822 (Thusnelda)

and it worked just as well as the "non-svn" 0.25 when I converted sequence of PNG files to OGV. I tested AVI conversion but no MOV format videos.

The 0.25 version I was using identifies itself as:

ffmpeg2theora 0.25 - Xiph.Org libtheora 1.1 20090822 (Thusnelda)

-84user (talk) 16:43, 6 November 2009 (UTC)

I had thought the 0.25 SVN version was was better than 0.25 when converting MOV files to ogv, but that doesn't appear to be the case. However, ffmpeg2theora 0.24 does work on the mov you mentioned above and other ones. direct link here. mahanga (talk) 18:35, 6 November 2009 (UTC)

Update: Thank you for the 0.24 link. I have now tested various ffmpeg2theora versions. The "GFrontend ffmpeg2theora 2007.2 Final" version linked above in section "Help talk:Converting video#SUPER directly converts Quicktime movie to OGG" identified itself as "ffmpeg2theora 0.18". Version 0.18 converts the 2000 kilobyte NASA MOV file well. I did not run the installation program; it was sufficient to extract the command-line executable from the archive file.

Program version converts to OGV? size q=0 size q=5 size q=6 size q=10
0.18 YES 32 67 81 231
0.24 YES 36 78 98 289
0.25 WRONG RATE 18 50 61 158
0.25 +fps fudge YES 18 50 61 159
0.25+svn16605 WRONG RATE 18 .. 61 158
0.25+svn+fudge YES 18 .. .. 159

Key: size is of converted OGV file in kilobytes; q=number is the --videoquality value passed to ffmpeg2theora (0 is lowest, 10 is best)
fps fudge is a workaround of --inputfps 6 --framerate 6 to both override the input fps and to force the output frame rate, because ffmpeg2theora 0.25 (both current version and with svn16605) appears to convert some Quick Time MOV files to OGV at the wrong frame rate (far too fast). -84user (talk) 19:21, 6 November 2009 (UTC) (added 2007.2 links -84user (talk) 22:13, 8 November 2009 (UTC))

Why are you using a 2007 version of SUPER, when there's one released in 2009. Secondly, how did you find the ffmpeg2theora version number in SUPER? I ask b/c I'd like to figure out the version SUPER 2009b36 is using. Thanks. mahanga (talk) 01:22, 7 November 2009 (UTC)

My SUPER version is 2008.build.30 dated Mar 22, 2008. Inertia is why I don't use the 2009 version. I did not intend to claim knowledge of which ffmpeg2theora version SUPER uses, that was just my clumsy grammar. I've just improved the text above. However, inside each OGV file created by SUPER 2008.build.30 I find the text "Xiph.Org libTheora I 20040317 3 2 0" (I use the emacs text editor to open the OGV), while inside OGV created by ffmpef2theora-0.25 I find "Xiph.Org libtheora 1.1 20090822 (Thusnelda)" and inside OGV from ffmpef2theora-0.18 I find "Xiph.Org libTheora I 20060526 3 2 0", so I suspect my SUPER uses an even older library. I may upgrade in a week. -84user (talk) 22:13, 8 November 2009 (UTC)

Update: I have now installed SUPER version 2009.build.36, and it has more features and converts MOV files to OGV that play Ok on Firefox and VLC (but not MPC). It makes inconsistent reports on the frame rate - it claims 25 when the original was 6 for example (does this explain why MPC plays some SUPER-generated OGG videos too fast?). Second, it uses green instead of black when padding videos. Third, it still offers too-limited a set of options. Fourth, unlike the 2008 version, SUPER outputs OGV files that do not fully identify the theora library used: they now contain only "based on Xiph.Org's libTheora". I cannot determine what ffmpeg2theora version it uses; the included programs are ff2ogg.exe dated 2008-06-29 which looks like an earlier ffmpeg2theora, and ffmpeg.exe dated 2007-01-16 version 0.5.0-pre1,build 4743 Copyright (c) 2000-2005 Fabrice Bellard. In brief, SUPER looks Ok for standard video conversion, but I prefer the full power that ffmpeg2theora command line gives me. -84user (talk) 22:53, 10 November 2009 (UTC)

Thoughts on help[edit]

My quick thoughts on the content of Wikimedia's help for Converting videos?

be honest - list the known limitations and workarounds
be verifiable - detail the source media used, the system environment and the process
we need a test suite of media files

I feel such Help needs to avoid frustrating users with instructions that may not always work. At the same time, it should give as many different ways as possible as I have not seen one program handle all cases.

Here are some limitations I have experienced:

VLC misses the first 0.3 seconds of any audio input - a showstopper for short sounds
VLC plays some Theora OGV media badly
Media Player Classic with the CCCPack also has problems
firefogg does not provide the user with all the ffmpeg2theora options
SUPER has problems with certain OGV media

What works well?

Firefox 3.5 appears to play all kinds of OGV media correctly, so far.

-84user (talk) 16:43, 6 November 2009 (UTC)

I wasn't aware there were problems with media players badly playing Theora videos. I'll have to do some testing of my own. What version of VLC are you using that's giving you issues? The same with MPC and the CCCPack. mahanga (talk) 22:31, 6 November 2009 (UTC)
I think most of the frustration comes from the conversion tools. Not all videos can be easily converted. There is one program which should handle most cases and that is ffmpeg2theora. It's what SUPER, FFCoder and others use. If a video isn't being converted, then it's likely a bug or maybe a codec that hasn't been implemented yet. We need to list these videos and note their codec, framerate, etc. Then one should try using an older (or preview) release or notify the developer. mahanga (talk) 00:12, 8 November 2009 (UTC)

I added a paragraph on limitations to the page. The main issue right now appears .mov files. Also, I guess Indeo IV50 encoded files aren't supported. I read their wiki article and there's many issues involved. I just realized ffmpeg2theora will only convert files that w:ffmpeg is able to decode. If you go to that wiki page, you'll see only Indeo 2 and 3 (IV20, IV30) are supported, not Indeo 5 (IV50). I'll add this to the Limitations section. mahanga (talk) 00:12, 8 November 2009 (UTC)

Replying to the 6 November question, I use VLC 1.0.1 Goldeneye, and the Combined-Community-Codec-Pack-2008-09-21.exe I have shows version "2008.09.21.0", last changed . I have added section Test videos below which shows a few of the problems I have found.

test.avi results[edit]

Test.avi converted to Theora

There is a small video test file licensed with Creative Commons Attribution-ShareAlike at [3], and I managed to convert it to OGV format (see right).

Results attempting to play the original test.avi file:

ffmpeg2theora (both 0.25 and preview binary) FAILS with "swScaler: Unknown format is not supported as input pixel format"
VLC FAILS: it plays only the audio and reports: "VLC does not support the audio or video format "IV50". Unfortunately there is no way for you to fix this."
MPC plays it
ZOOM plays it
SUPER plays it
SMPlayer plays it
WinAmp plays it
Windows Media Player plays it
GOM plays it

My attempts at converting test.avi to OGV:

SUPER WORKED but only when I set Video Scale Size to 320x240 ("No change" gave ERROR)

-84user (talk) 16:43, 6 November 2009 (UTC)

Update: After some more tests (see below) I suspect File:test avi.ogv may have an inherent audio sync problem (always out of sync on replay in Firefox and always out of sync at first play and replay in Google Chrome). This eight megabyte BBC test video played and replayed with good audio sync both in Firefox and Chrome (despite buggy replay in Chrome).

Results trying to play the File:Test avi.ogv and a BBC test video in a browser:

Browser thumb appearance? click play result? replay? plays uploaded file? replay uploaded file?
Firefox 3.5.5 thumbnail PASSES: plays Ok audio slightly out of sync PASSES audio slightly out of sync
Firefox 3.5.5 and BBC test thumbnail PASSES: plays Ok PASSES PASSES PASSES
Opera 9.63 thumbnail FAILS: disappears n/a FAILS:offers to download n/a
Opera 9.63 and BBC test thumbnail FAILS: disappears n/a FAILS:offers to download n/a
Opera 10.01 thumbnail FAILS: disappears n/a FAILS:offers to download n/a
Opera 10.01 and BBC test thumbnail FAILS: disappears n/a FAILS:offers to download n/a
Google Chrome 3.0.196.2 and test avi.ogv thumbnail HALF PASS: video Ok; AUDIO OUT OF SYNC BUGGY1 AUDIO OUT OF SYNC BUGGY1
Google Chrome 3.0.196.2 and BBC test thumbnail PASSES: video and audio Ok BUGGY2 FAILS:offers to download n/a
Google Chrome 3.0.195.32 and test avi.ogv thumbnail PASSES but BUGGY3 BUGGY3 PASSES! FREEZES and BUGGY3
Google Chrome 3.0.195.32 and BBC test thumbnail PASSES: video and audio Ok BUGGY2 PASSES! AUDIO OUT OF SYNC and BUGGY3

BUGGY1 in Google Chrome means audio always OUT of sync and: the play slider control does not work as expected; play button does not appear when video ends; dragging slider causes pause followed by colour defects followed by incorrect position and out of sync audio with good video; missing volume control - fixed to maximum; slider and context menu controls often contradict

BUGGY2 in Google Chrome means audio always IN sync but: the play slider control does not work as expected; play button does not appear when video ends; dragging slider causes long pause followed by colour defects followed by incorrect position but then correct audio and video; missing volume control - fixed to maximum; slider and context menu controls often contradict

BUGGY3 in Google Chrome 3.0.195.32 means sometimes VIDEO FREEZES on replay and audio is often OUT of sync: the play slider control does not work as expected; play button does not appear when video ends; dragging slider causes pause followed by colour defects followed by incorrect position but then correct video and often incorrect audio; missing volume control - fixed to maximum; slider and context menu controls often contradict

I just tried a fresh download of Google Chrome, but all I got was the same 3.0.196.2 with the same buggy OGG playback. I will now try to upgrade to the latest Opera version 10.01. -84user (talk) 14:57, 12 November 2009 (UTC) just added Opera 10.01 failure results to table just added Chrome 3.0.195.32 results to table

Now I just fully deinstalled Google Chrome and retried the Google installer. That gave me version 3.0.195.32 which has subtly different audio sync problems from 3.0.196.2. -84user (talk) 17:08, 12 November 2009 (UTC)

Test playback of videos[edit]

8 seconds of a pattern flipping each second accompanied by a sound click. This is File cal_2flip2click8khzvbr_ifps25fr25_q6aq0.ogv

Here are some test media I have uploaded with some test results. See Category:Calibration videos and Category:Calibration audio. Full details are at User:84user/Video tests. Results using VLC to convert AVI to OGV appear first, followed by a table of the test media and how a few players handle them. -84user (talk) 23:05, 15 November 2009 (UTC)

VLC Goldeneye results[edit]

VLC media player version 1.0.1 Goldeneye - encoding to Theora OGG video. How these videos were made is detailed in section "Calibration test videos" in User:84user/Video tests.

Source media VLC converts to OGG? VLC plays OGG? Firefox plays OGG? MPC plays OGG?
cal.avi VLC at 800kbps, noaudio YES* YES YES YES
cal.avi VLC at 1600kbps, noaudio YES* YES YES YES
cal.avi VLC at 3200kbps, noaudio YES* YES YES YES
cal_2flip2_click1in4track8secsmono22khz16bit8khzvbr.avi at 3200kbps YES* MISS1 YES STATIC
cal_2flip2_click1in4track8secsmono22khz16bit8khzvbr.avi at 800kbps sample rate 11250 YES* MISS1 YES STATIC
cal_2flip2click8khzvbr.avi YES* MISS1 YES YES

-84user (talk) 23:05, 15 November 2009 (UTC)

Calibration test videos[edit]

This table shows how well or badly various media players performed with some OGV files.

test media Firefox Chrome MPlayer VLC VLC1.0.3 MPC
File:cal_ifps25fr25_q10.ogv YES YES YES NO NO NO
File:cal_4frames_ifps25fr25_q10.ogv YES YES YES NO NO NO
File:cal_2flip_ifps25fr25_q10.ogv YES GLITCH YES NO NO NO
File:vdubtestrgbcube4secs_ifps12fr12_q10.ogv YES YES YES YES YES NOKEYS?
File:Audacity click track one per second for eight seconds mono88khz32bitfloat.ogg YES YES YES CLICKS7 CLICKS7 CLICKS3
File:cal_2flip2click8khzvbr_ifps25fr25_q6aq0.ogv YES OUT OF SYNC OUT OF SYNC OUT OF SYNC* OUT OF SYNC* NO
File:cal_2flip2_click1in4track8secsmono22khz16bit8khzvbr_vlc3.ogv YES YES YES YES* CLICKS7 STATIC
File:cal_2flip2click8khzvbr_vlc.ogv YES FIRSTYES CLICKS9 CLICKS7 CLICKS7 YES
File:Cal16x16check vdnocnoafr1len2.avi.q10.ogv
YES2 YES3 NO not tested BLACK FLAT

-84user (talk) 23:05, 15 November 2009 (UTC)

YES2 means Firefox plays the file Ok but it plays upscaled videos using a filter that blurs edges, unlike Google Chrome which plays upscaled videos sharply;
YES3 means Google Chrome always plays the file sharply with no blur regardless of any upscaling, but the video gets cropped when any zoom is used (larger or smaller).
BLACK means VLC 1.0.3 played 2 seconds of black
FLAT means MPC displayed a rectangle with aspect ratio 2.66 (??) with a muddy blue green gradient followed by one second of pinkish grey blurry rectangles (abstract art?)
Firefox is version 3.5.5
Google Chrome is version 3.0.195.32;
MPC is Media Player Classic build 1.3.1249.0, complier VS 2008, FFmpeg compiler GCC 4.3.3
VLC is 1.0.1 Goldeneye;
VLC 1.0.3 was downloaded from http://www.videolan.org/mirror-geo.php?file=vlc/1.0.3/win32/vlc-1.0.3-win32.exe - the Windows self-extracting package
mplayer.exe dated 2006-10-28 is from SUPER 2009.build.36 and identifies itself with:
MPlayer 1.0rc1-3.4.2 (C) 2000-2006 MPlayer Team.
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ (Family: 15, Model: 67, Stepping: 2)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.

(added VLC 1.0.3 results and program versions -84user (talk) 20:51, 2 December 2009 (UTC))(added results for File:Cal16x16check vdnocnoafr1len2.avi.q10.ogv -84user (talk) 03:03, 3 December 2009 (UTC))

A lot of this data would probably be very useful to the Theora developers, ffmpeg2theora project, and the Firefox, Chrome, VLC developers. I'll make a comment on the xiph mailing list. Could you provide version numbers on the applications (Firefox 3.5, Chrome, MPC)? Secondly, does VLC encode properly, compared to ffmpeg2theora? ffmpeg2theora seems to be the standard for encoding so we should try using that whenever we can. mahanga (talk) 17:15, 18 November 2009 (UTC)
Sorry for the delay before replying; I wanted to test VLC 1.0.3 first before adding more to this page. I have added version numbers above, they were listed in User:84user/Video tests.
Does VLC encode properly, compared to ffmpeg2theora? Sometimes. I remember VLC producing OGV output with wrongly coloured initial frames, and when I now use VLC 1.0.3 to convert the large NASA movie here the output again has the first two or three seconds wrong. Other programs converted that movie correctly (SUPER and ffmpeg2theora for example). See File:Saturn ring spokes (captured by Cassini).ogv for a selection of ffmpeg2theora conversions. But VLC also converts some correctly: I have just now tested it converting low frame rate test AVI videos generated by VirtualDub 1.93 and the outputs are Ok. It still cannot handle the video codec used in the test.avi file that both SUPER and ffmpeg2theora can, see File:Test avi 64kbps video 32kbps audio.ogv. If there was a freely licensed suite of test videos (I found a very large Microsoft suite but with a restricted license) we could do more tests. -84user (talk) 20:51, 2 December 2009 (UTC)
The quality of the encoded vorbis audio produced by VLC is inferior to ffmpeg2theora even at really high bitrates. I suspect that VLC player uses the internal Vorbis encoder present in libavcodec rather than libVorbis. Please avoid using VLC when encoding audio to Vorbis. — Preceding unsigned comment added by 196.211.25.193 (talk • contribs) 12:59, 15 March 2010 (UTC)
Apologies, I installed the latest VLC Player today and the Vorbis encoded output sounds great. It is using libVorbis.

having trouble converting mp4 to ogg[edit]

I'm using XP and the video file is encoded with h264 as an mp4. ffmpeg2theora is the only one that comes close to working but it I have 2 issues:

  1. It clips the first few seconds of animation (but not audio)
  2. I want to resize it from 720x480 (4:3) to 1/2 size as this would be uploaded to wikipedia under fair use.71.14.177.121 02:16, 18 December 2009 (UTC)
Well, you won't be able to upload it on Commons if it's fair use. I don't know about Wikipedia's policy, but I've not seen any fair-use videos on there. Can you link to the video you want to upload? As to your converting problem,
  1. I would suggest using an older version or a beta version of ffmpeg2theora.
  2. use the ffmpeg2theora parameter -x and -y to scale the video to the dimensions that you want. example:
ffmpeg2theora inputVideo.mp4 -x 360 -y 240 --output outputVideo.ogv
mahanga (talk) 02:55, 18 December 2009 (UTC)
Thanks. I'll try those. As for linking I'm not sure if commons allows linking to copyrighted material or not on their talk pages. Wikipedia does have a few video files on it though, but they are rare because the criteria must be that neither audio or a screenshot nor text could adequetly convey the meaning.71.14.177.121 04:23, 20 December 2009 (UTC)
Beta didn't work (got screwed up video), but .24 did except the parameters to shrink it don't seem to be enforced...or at least MPC isn't enforcing it.71.14.177.121 04:31, 20 December 2009 (UTC)
I know of no policy that prohibits just linking to a copyrighted video on a discussion page. If you managed to convert it to Theora (.ogv), you can try using oggResize. Alternatively, you can email me a link to the video so I can try a few things. mahanga (talk) 05:04, 20 December 2009 (UTC)
Thanks, but I managed to shrink it. Although if its needs to be shrunk more or the audio quality lowered it may have issues. School Rumble you can see the coveted video there.71.14.177.121 19:01, 23 December 2009 (UTC)

Handbrake 0.9.4 can convert to Theora and Vorbis inside MKV[edit]

I have just quickly tested the media converter Handbrake version 0.9.4, and I was pleasantly surprised to find it converts M4V to MKV with video codec set to VP3 (Theora) and audio codec set to Vorbis with no errors. For details see User:84user/Video tests#Handbrake 0.9.4 tests.

If others can repeat these tests on other source videos, does this mean we could add the MKV (Matroska) container format to the file types allowed by Commons? -84user (talk) 15:11, 2 January 2010 (UTC)

That's a good question. A search shows this has been asked a few times, but with no definite answer. One thing to check with mkv is if it is actually using a free codec such as Theora, as opposed to x264 or something else. I suggest making a post on the Village Pump linking here for more feedback. mahanga (talk) 01:45, 4 January 2010 (UTC)

ffmpeg2theora and audio sync[edit]

I experience audio sync problems with various ffmpeg2theora versions and options, and wonder whether anyone has found a cause? Certain combinations ffmpeg2theora versions and options produce audio sync problems but I cannot nail down a cause. It might be --soft-target, and it seems to happen more when I use --starttime and --endtime and --framerate. It is a problem because it discourages me from using any options other than bitrate ones, which is a shame.

Date ffmpeg2theora --help version output
2007-04-03 0.18
 ? 0.20
 ? 0.22
 ? 0.24
20090822+? 0.25 - Xiph.Org libtheora 1.1 20090822 (Thusnelda)
20090822+? 0.25+svn16605 - Xiph.Org libtheora 1.1 20090822 (Thusnelda)
2010-01-04 0.25+svn16768M - Xiph.Org libtheora 1.1 20090822 (Thusnelda)

Partial results from various programs encoding to File:Making of Elephants Dream.ogv from the same 550 MB CC-licensed "making_of_elephants_dream_3160kbps_2chn_48000Hz.mpg" from orange.blender.org:

program dates options results writing libraries
ffmpeg2theora 0.25 20090822+? w320 v400kbps s a48kbps2chan st sync BAD Xiph.Org libtheora 1.1.20090822 (Thusnelda) libVorbis 20090709 (UTC 2009-07-09)
VLC 1.0.3  ? w320 v400kbps a48kbps48kHz2chan sync Ok libTheora 3.2.1 (UTC 2008-10-20) libVorbis 1.2 (UTC 2007-06-22)
SUPER v2010.build.37 ff2ogg 2008-06-29 v240kbps a48kbps48kHz2chan sync Ok based on Xiph.Org's libTheora/libVorbis
ffmpeg2theora 0.22  ? v240kbps a48kbps sync Ok libTheora 3.2.1 (UTC 2007-10-25) aoTUV Beta 5 (UTC 2006-10-24)
ffmpeg2theora 0.24  ? v240kbps a48kbps sync Ok libTheora 3.2.1 (UTC 2008-10-20) libVorbis 20081127 (UTC 2008-11-27)
ffmpeg2theora 0.25 20090822+? v240kbps a48kbps sync Ok Xiph.Org libtheora 1.1.20090822 (Thusnelda) libVorbis 20090709 (UTC 2009-07-09)
ffmpeg2theora 0.25 20090822+? v400kbps a48kbps sync Ok Xiph.Org libtheora 1.1.20090822 (Thusnelda) libVorbis 20090709 (UTC 2009-07-09)
ffmpeg2theora 0.25 20090822+? v450kbps a48kbps sync Ok Xiph.Org libtheora 1.1.20090822 (Thusnelda) libVorbis 20090709 (UTC 2009-07-09)

Legend

0.25 = ffmpeg2theora 0.25 - Xiph.Org libtheora 1.1 20090822 (Thusnelda)
a48kbps = --audiobitrate 48
a48kbps2chan = --audiobitrate 48 --channels 2
s = --sync
st = --soft-target
v240kbps = --videobitrate 240
v400kbps = --videobitrate 400
w320 = --width 320
sync BAD = The generated OGV's audio track goes very slowly out of sync, such that it is about one second off after 25 minutes. It starts perfect but after 10 minutes the sync error is just about noticeable.

I also tried various options, such as --sync (or --nosync in some builds) which sometimes fixed the audio sync but at the cost of dropping every other video frame. -84user (talk) 21:50, 5 January 2010 (UTC)

TinyOgg[edit]

I just found TinyOgg. I haven't tested it yet, but it might be a usefull resource. // Liftarn (talk)

Only seems to work with YouTube, which unfortunately contains mostly copyrighted works. Works fairly well with a video I tried from IGF on YouTube. mahanga (talk) 17:21, 29 January 2010 (UTC)

Using GraphEdit to convert Windows Media Video[edit]

I used Graphedit to convert a "Windows Media Video 9 Screen" coded video to Theora OGG video. If anyone knows a good tutorial on GraphEdit muxing to Matroska or Ogg containers I would be grateful, especially if it is possible to mux Lagarith Lossless (or even mpeg4) and FLAC together to MKV. I had used Windows Media Encoder to record my mouse movements on the PC screen and produce a WMV file containing the WMV-9 stream. Nothing would convert it (even the online Total Video Convertor failed) until I randomly tried Graphedit.

I first dragged the input.wmv to Graphedit, replaced the default renderer with a Theora encoder followed by an OGG mux filter. I clicked play, and after some time the OGG mux's output file held a playable theora stream in an OGG container. However, GraphEdit crashed often while I was experimenting. Here is what worked in case anyone is also trying to work with Graphedit.

  • replace the default renderer filter with a DirectShow Theora Encode Filter followed by an OGG mux filter writing to a file: that created a theora stream in an OGG container
  • replace the default renderer filter with a DirectShow ffdshow filter followed by a Haali Matroska muxer writing to a file: that created a mpeg4 stream in an MKV container
  • replace the default renderer filter with a DirectShow Lagarith lossless codec followed by a Haali Matroska muxer writing to a file: that created a Lagarith stream in an MKV container, playable with GOM and ZOOM, badly by MPC and refused by VLC

-84user (talk) 08:40, 22 January 2010 (UTC)

Would you mind sharing a sample video in that format? mahanga (talk) 17:22, 29 January 2010 (UTC)

Not at all, I have uploaded two short WMV videos and one long OGG video here:

http://84user.webs.com/files/tests/windows media encoder capture.wmv 655 KB

http://84user.webs.com/files/tests/mpcwmpfraps.wmv 211 KB

http://84user.webs.com/files/tests/windows media encoder capture.wmv.ogg 4025 KB

The first is a windows media encoder capture of me using the English wikipedia pages en:Talk:Windows Media Encoder and en:Fraps and then en:Windows Media Encoder, total time one minute 27 seconds.

The second is a shortened windows media encoder capture of me replaying the first inside Media Player Classic, total time 32 seconds.

The third is the first converted to an OGG video file (4.1 MB and the frames are flipped). -84user (talk) 21:12, 29 January 2010 (UTC) fixed URLs -84user (talk) 02:08, 30 January 2010 (UTC)

GraphEdit example walkthrough[edit]

Here are detailed notes, mostly for my benefit, on how to convert video recorded from a computer screen to Theora using Windows Media Encoder (wmenc) and GraphEdit, both Microsoft products. A Graphedit bug mandates clicking the "New" menu item each time a new conversion is required.

  • My wmenc.exe was found in C:\Program Files\Windows Media Components\Encoder, and has version 9.0.0.2980, size 599 KB, last modified 11/12/2002 20:38 (2002-12-11 in ISO format)
  • I forgot where I got graphedt.exe from, but its version is 9.4.78.0 last modified 04/03/2006 08:22 (2006-03-04 in ISO format) It came with a small windows help file which states "It is provided as an executable with the DirectX SDK."
  • First, I launched wmenc.exe and set the controls to record the exact region of the screen I wished for, at high quality. I click Start encoding, and then perform mouse and keyboard actions to produce the effects I wish to record and then click Stop encoding. This produces the small file "video.wmv" which Media Player Classic plays back with no problem.
  • Next, I launch graphedt.exe and the blank "GraphEdit" window appears
  • I drag the saved "video.wmv" file to the "GraphEdit" window and it displays three boxes shown here in Ascii:
 _____________     ___________________________      _________________
|             |   |                           |    |                 |
|  Raw Video 0|-->|in0                    out0|--->|VMR Input0       |
| video.wmv   |   |    WMV Screen decoder DMO |    |  Video Renderer |
|             |   |                           |    |                 |
---------------   -----------------------------    -------------------

Insert Theora Encode Filter

  • click on menu item Graph / Insert Filters
  • scroll down to DirectShow Filters and click the "+" to expand the list
  • scroll down to Theora Encode Filter and click the name to select it
  • click the Insert Filter button
  • click the checkbox "Favorite Filter?" so that a checkmark appears (do this for all filters inserted)
  • (optionally you can also click the "+" to expand it and note the filename is something like C:\Program Files\Xiph.Org\Ogg Codecs\dsfTheoraEncoder.dll)
  • click the Close button
  • the GraphEdit window now shows
 _____________     ___________________________      _________________
|             |   |                           |    |                 |
|  Raw Video 0|-->|in0                    out0|--->|VMR Input0       |
| video.wmv   |   |    WMV Screen decoder DMO |    |  Video Renderer |
|             |   |                           |    |                 |
---------------   -----------------------------    -------------------
 ___________________________ 
|                           |
|Theora In        Theora Out|
|    Theora Encode Filter   |
|                           |
-----------------------------
  • select the arrow shown as "out0|--->|VMR Input0" and press backspace to delete it
  • click the now free output pin "out0" and drag it to the free input pin "Theora In" to connect the two boxes.
  • the GraphEdit window now shows
 _____________     ___________________________      ___________________________ 
|             |   |                           |    |                           |
|  Raw Video 0|-->|in0                    out0|--->|Theora In        Theora Out|
| video.wmv   |   |    WMV Screen decoder DMO |    |    Theora Encode Filter   |
|             |   |                           |    |                           |
---------------   -----------------------------    -----------------------------

Insert Ogg Mux Filter

  • click on menu item Graph / Insert Filters
  • scroll down to DirectShow Filters and click the "+" to expand the list
  • scroll down to Ogg Mux Filter and click the name to select it
  • a dialog opens titled "Select an output file for this filter to use"
  • enter a suitable output filename, such as "videowmv.ogv" and click Open (yes it's misleading); the dialog will close
  • (do not forget to also mark this as a "Favorite Filter")
  • click the Close button to close the "Which filters do you want to insert?" dialog
  • the GraphEdit window now shows
 _____________     _________________________      _________________________ 
|             |   |                         |    |                         |
|  Raw Video 0|-->|in0                  out0|--->|Theora In      Theora Out|
| video.wmv   |   |  WMV Screen decoder DMO |    |  Theora Encode Filter   |
|             |   |                         |    |                         |
---------------   ---------------------------    ---------------------------
 _________________ 
|                 |
|Ogg Packet In    |
|   videowmv.ogv  |
|                 |
-------------------
  • click the free output pin "Theora Out" and drag it to the free input pin "Ogg Packet In" to connect the two boxes.
  • the GraphEdit window now shows
 _____________     _________________________      ________________________      ________________ 
|             |   |                         |    |                        |    |                |
|  Raw Video 0|-->|in0                  out0|--->|Theora In     Theora Out|--> |Ogg Packet In   |
| video.wmv   |   |  WMV Screen decoder DMO |    |  Theora Encode Filter  |    |   videowmv.ogv |
|             |   |                         |    |                        |    |Ogg Packet In   |
---------------   ---------------------------    --------------------------    ------------------

Press the button icon depicted as a green triangle, with tooltip "Play", and GraphEdit will convert the source video.wmv to videowmv.ogv (an OGV containing a Theora video stream), but it may be vertically reflected, see #Fixing vertical flipping in GraphEdit for how to fix this.

-84user (talk) 22:03, 28 March 2010 (UTC)

Fixing vertical flipping in GraphEdit[edit]

First, ensure you have made the filters used in the #GraphEdit example walkthrough as "Favorite Filter", otherwise you will end up repeating a lot of scrolling and searching.

Next, you must start GraphEdit from a blank window by clicking New after each conversion attempt, otherwise GraphEdit simply produces null output with no warnings. So, in short, at each conversion you click "New" and drag the source WMV file to GraphEdit, then insert filters from your Favorites, join them together and press play. There may be an alternative workaround using save as graph, I have not tested this (out of frustration) but that will entail renaming or copying source video files to "video.wmv" and remembering to rename the OGV file produced, each time.

  • click "New" in GraphEdit
  • drag video.wmv to GraphEdit

Insert ffdshow raw video filter

  • If "ffdshow raw video filter" is in your Favorites then just click on it, otherwise:
    • click on menu item Graph / Insert Filters
    • scroll down to DirectShow Filters and click the "+" to expand the list
    • scroll down to "ffdshow raw video filter" and click the name to select it
    • click the Insert Filter button
    • click the checkbox "Favorite Filter?" so that a checkmark appears
    • click the Close button
  • the GraphEdit window now shows
 _____________     ___________________________      _________________
|             |   |                           |    |                 |
|  Raw Video 0|-->|in0                    out0|--->|VMR Input0       |
| video.wmv   |   |    WMV Screen decoder DMO |    |  Video Renderer |
|             |   |                           |    |                 |
---------------   -----------------------------    -------------------
 _______________________________ 
|                               |
|In                          Out|
|    ffdshow raw video filter   |
|In Text                        |
---------------------------------
  • select the arrow shown as "out0|--->|VMR Input0" and press backspace to delete it
  • click the now free output pin "out0" and drag it to the free input pin "In" to connect the two boxes.
  • the GraphEdit window now shows
 _____________     _________________________      _____________________________ 
|             |   |                         |    |                             |
|  Raw Video 0|-->|in0                  out0|--->|In                        Out|
| video.wmv   |   |  WMV Screen decoder DMO |    |  ffdshow raw video filter   |
|             |   |                         |    |In Text                      |
---------------   ---------------------------    -------------------------------
  • Right mouse-click over "ffdshow raw video filter" and click on "Filter Properties ...."
  • a dialog titled "ffdshow raw video filter properties" appears
  • scroll down to "Perspective correction" and click on it
  • note the destination rectangle coordinates, the default is: [0,100] [100,100] [0,0] [100,0]
  • the correction you want is: [0,0] [100,0] [0,100] [100,100]
  • you only do the following once, thereafter the settings are saved:
    • manipulate the green rectangle until the coordinates show as [0,0] [100,0] [0,100] [100,100]
    • to do this, click and drag the top green line down about a half,
    • and click and drag the bottom green line up all the way to the top
    • return to the green line now half way down and drag it all the way to the bottom
    • hover your mouse over "Perspective correction" and ensure the coordinates are now [0,0] [100,0] [0,100] [100,100]
    • ensure the box "Process whole image" is checked and the "Only right half" box is not
    • ensure the box "Perspective correction" is checked and the "Source rectangle" box is not
    • ensure Interpolation is none
    • click Apply and click OK

Insert Theora Encode Filter

  • click on Favorites and click on "Theora Encode Filter"
  • the GraphEdit window now shows
 _____________     _________________________      _____________________________ 
|             |   |                         |    |                             |
|  Raw Video 0|-->|in0                  out0|--->|In                        Out|
| video.wmv   |   |  WMV Screen decoder DMO |    |  ffdshow raw video filter   |
|             |   |                         |    |In Text                      |
---------------   ---------------------------    -------------------------------
 ___________________________ 
|                           |
|Theora In        Theora Out|
|    Theora Encode Filter   |
|                           |
-----------------------------
  • join the pins "Out" and "Theora In" together

Insert Ogg Mux Filter

  • click on Favorites and click on "Ogg Mux Filter", and type in an output ".ogv" filename, such as "videowmvfixed.ogv"
  • join the pins "Theora Out" and "Ogg Packet In" together

Click the play button and GraphEdit should produce a "videowmvfixed.ogv" that plays correctly in Firefox and MPC

-84user (talk) 22:03, 28 March 2010 (UTC)

More WME and GraphEdit notes[edit]

WME is Windows Media Encoder, program name wmenc.exe:

  • to configure screen capture: View/Properties Panel/Sources tab/Video configure
  • to set output file: View/Properties Panel/Output tab/Encode to file
  • to change quality: View/Properties Panel/Compression tab/Destination Custom Edit.../ for codecs, choose "Windows Media Video 9 Screen" and Video Format "Custom" (neither NTSC nor PAL is any good to me) . Next tab for frame rate, bit rates and more
  • to change processing: View/Properties Panel/Processing tab/ note "Flip vertically" produced a jumbled mess
  • do not forget to click Apply after any changes to properties (sometimes more than once)

Using the ffdshow raw video filter in GraphEdit to correct or enhance colours.

To get really white whites and black blacks, set Contrast to Full Range:

  • ffdshow raw video filter properties/Output/RGB conversion/ from "Standard 16-235 chroma" to "Full range 0-255 chroma 1-255"
  • the filter appears to only colour-correct a region of whole multiples of 16 pixels, so ensure your source video has compatible dimensions
  • video players might apply their own post-processing that affects the colour and saturation
  • test whether video players are changing the colours using IrfanView snapshots of players, Edit/Show Paint dialog/picker tool and examine the RGB numbers

-84user (talk) 22:03, 28 March 2010 (UTC)

Converting an animated GIF[edit]

compact Theora converted from full size animated File:Scm.gif

Here is a walkthrough of a conversion from an animated GIF to a Theora OGG video. I chose File:Scm.gif because it is so large that certain players and encoders have problems handling it. The resulting Theora OGG video files are File:Scm_gif_fullsize_q10.ogv (1944x1296 pixels, 1.3 MB), File:Scm_gif_q9_480p.ogv (720x480 pixels, 222 KB) and File:Scm_gif_q10_240p.ogv (360x240 pixels, 72 KB). Firefox 3.6.3 plays each of them correctly. MPC and VLC have various problems, probably with the low frame rate.

Programs used:

  • mplayer.exe inside latest w:en:SMPlayer install (MPlayer Sherpya-SVN-r29355-4.5.0 (C) 2000-2009 MPlayer Team)
  • ffmpeg2theora-0.25.exe (because version 0.26 ignores the requested frame rate)

Steps:

  1. download the 7 frame 9 megabyte File:Scm.gif to PC
  2. mplayer Scm.gif -vo yuv4mpeg
  3. ffmpeg2theora-0.25.exe stream.yuv --inputfps 1 --framerate 1 --videoquality 10 --output stream025ifps1fr1vq10.ogv
  4. upload stream025ifps1fr1vq10.ogv as File:Scm_gif_fullsize_q10.ogv
  5. ffmpeg2theora-0.25.exe stream.yuv --inputfps 1 --framerate 1 --height 480 --videoquality 10 --output stream025ifps1fr1vq9h480.ogv
  6. upload stream025ifps1fr1vq9h480.ogv as File:Scm_gif_q9_480p.ogv
  7. ffmpeg2theora-0.25.exe stream.yuv --inputfps 1 --framerate 1 --height 240 --videoquality 10 --output stream025ifps1fr1vq10h240.ogv
  8. upload stream025ifps1fr1vq10h240.ogv as File:Scm_gif_q10_240p.ogv

Writing these steps down helped me, so I hope it helps others. (Abandoned methods: mplayer dumping to PNG frames, using ffmpeg2theora-0.26.exe) -84user (talk) 20:52, 6 April 2010 (UTC)

Thanks for this easy to follow tutorial. I was looking for something like this. Now if only the Theora to GIF tutorial was this easy. mahanga (talk) 22:13, 7 April 2010 (UTC)

Note there iswas a wikimedia bug, bugzilla:23160 "Theora video thumbnails corrupt", now fixed, that may have prevented the correct display of video thumbnails. If you see a blank or corrupt thumbnail after uploading an OGG video, do not panic, the video file is probably 100% correct. You can confirm the OGG video is correct by (1) clicking the link under the play button and watching the browser play the file, and (2) downloading it to your computer and playing it in Media Player Classic. -84user (talk) 12:38, 18 April 2010 (UTC) (updated -84user (talk) 20:25, 5 May 2010 (UTC))

Converting a Theora OGG video to an animated GIF[edit]

This is a response to the wish that the Theora to GIF tutorial could be easier. If the following works, it should be simpler than that described above in Convert OGV to animated GIF.

  • Compact but framerate can be wrong: mplayer.exe video.ogv -fps 1 -vo gif89a
  • With option to save audio: mplayer.exe video.ogv -fps 1 -vo gif89a -ao pcm
  • Without sound: mplayer.exe video.ogv -fps 1 -vo gif89a -nosound

The first command above will convert video.ogv to "out.gif", the second will do the same but also save the audio channel (if any) in file "audiodump.wav". MPlayer has problems with certain input OGG video files.

Use gifsicle to examine the created GIF:

  • gifsicle.exe --info out.gif

Use gifsicle to fix the framerate of the GIF that MPlayer creates, for example:

  • gifsicle.exe --delay 100 out.gif > out100.gif

One major problem is the colour reduction: the user must choose how the colour palette is to be reduced to GIF's 256 colour limit. If MPlayer's default reduction looks bad (it may look blocky) then the video needs to be converted to a sequence of images so that their colour palettes can be manually changed. -84user (talk) 22:30, 8 April 2010 (UTC)

MPlayer converted this OGV ... to this GIF
inline
inline
inline

Above are example OGV files and the GIFs that MPlayer converted. Notice the odd colour changes. For the third video I had to choose a strange frame rate and GIF frame delay (details in the file's page description). -84user (talk) 00:44, 9 April 2010 (UTC)

Online solutions review[edit]

The Help:Converting video page includes a "Online solutions" with a link to http://video.online-convert.com/convert-to-ogg. Has anyone tested how well this works?

I suggest a caveat be added to warn the user that it may not work for some kinds of input. I think Commons should avoid wasting a user's time uploading a large video only to find the result is unplayable. To that end here is my very short test review.

Now, with ffmpeg2theora.exe (version 0.25, 0.26 or the latest 16 March 2010 version) I also get single frame OGV output, so I wonder if online-convert.com is using the same program. I found the only way to convert these GIFs to OGG was to use "mplayer -vo yuvmpeg" first (see above at Converting an animated GIF). -84user (talk) 23:38, 6 April 2010 (UTC)

I left only that link out of ~5 services because it was the only one that uses the latest ffmpeg2theora version (.26). I also experimented with it using a couple video files (avi, mp4, mpeg) and was satisfied with its results. Because it's using ffmpeg2theora, the web service won't work if the application isn't able to do it. I agree that users should use some of the other tools before trying this option, but I know that there are people out there more comfortable with this solution. Secondly, most videos on Commons are less than 15mb so I think it's an acceptable solution to have listed. mahanga (talk) 22:09, 7 April 2010 (UTC)

Video thumbnail error[edit]

Video of a feeding rotifer

The video I uploaded can be played OK, but does not generate a proper thumbnail. I converted it to OGG using Miro Video Converter, from a .WMV file made in Picasa. Can this problem be fixed? Is it worth trying again with a different encoder? NotFromUtrecht (talk) 17:55, 18 April 2010 (UTC)

It is likely a problem related to this Wikimedia bug, not the encoder. Hopefully they can fix the issue soon. mahanga (talk) 18:56, 19 April 2010 (UTC)
Thanks for the info -- I won't bother re-uploading the video, then. NotFromUtrecht (talk) 14:44, 20 April 2010 (UTC)
ffmpeg2theora version 0.24 is giving good thumbnails for me lately. Versions 0.25, 0.26 and from 2010-03-16 always gives garbled or missing thumbnails. For small examples see File:SDO 10 second youtube 1080 pixels DA8C8E04d01.flv 320x240 br270.ogv and File:Solar Dynamics Observatory xo with ffmpeg2theora-0.24 320x240 br270.ogv. I will also mention this at Commons:Village pump#Theora thumbnails. -84user (talk) 20:00, 28 April 2010 (UTC)
The version of ffmpeg2theora itself isn't relevant. It just happens that your ffmpeg2theora 0.24 binary is linked against a version of libtheora which is not happening to trigger the bug in the software at Wikimedia. --Gmaxwell (talk) 00:14, 29 April 2010 (UTC)

Changing frame rate with Avidemux[edit]

The frame rate of a source video may be either too fast or too slow for display. Here is a walkthrough on using Avidemux to losslessly change the frame rate before converting to Theora OGG.

For unknown reasons I find ffmpeg2theora (any version) ignores the framerate options for certain source videos. For this walkthrough the NASA movie at http://www.nasa.gov/mov/445812main_Pesnell_6-AIA-3WavelengthDissolve-H264.mov is used because it has a frame rate of 60000:1001 which is too fast and wastes bitrate for some users (me for example). File:SDO AIA First light prominence 20100330.ogv is the result of following this walkthrough using 29.97 frames per second (any garbled thumbnail is due to a wikimedia bug that should hopefully be fixed soon).

Programs used:

  • Avidemux version 2.5.2 on Windows Vista
  • ffmpeg2theora version 20100316, but 0.25 or 0.26 should be just as good

Steps:

  • launch Avidemux and set Video to Copy and Audio to Copy and Format to MP4
  • drag the source video to the Avidemux window, ignore the H.264 warning by clicking No and ignore the "Index is out of date" by clicking No
  • click the Avidemux Video menu "Frame Rate..."
  • the Change Frame Rate window will show 59.942, change this to your desired frame rate, choose 15 for this example, and click Ok (29.97 could be another choice)
  • double-check that Video is Copy, and Audio is Copy and Format is MP4
  • click File / Save / Save Video
  • Type a filename, such as "videoat15fps.mp4" and click Save
  • The save will be very fast because there is no re-encoding necessary, and hence no loss of quality
  • Check the saved video plays with Media Player Classic and VLC (these may have problems with low frame rates, so also try MPlayer)
  • convert the saved video to Theora using ffmpeg2theora as normal (but avoid using the framerate options)

-84user (talk) 14:09, 22 April 2010 (UTC)

Mencoder help[edit]

I have started page Help:Mencoder on how to use Mencoder to convert videos, mainly from a source OGG to another format (for video sharing sites). It starts with actual command lines that worked for me, including some problems found. There is some help for Mencoder on the web but it is difficult for me to follow in practice. I am doing this because I find it very difficult to correctly convert OGG video to any other format using a local Windows-based program, except by trial and error. I know there are online converters that sometimes work, but they are impractical for videos of any size, and they also require tweaking to ensure quality is not lost. -84user (talk) 19:11, 15 May 2010 (UTC)

Which format do you want to convert to? h.264? xvid? mahanga (talk) 19:52, 17 May 2010 (UTC)

Firefogg dogs?[edit]

Is there somewhere a documentation to Firefogg? It seems to me, that it doesnt convert from .mov files:-(--Juan de Vojníkov (talk) 21:10, 24 May 2010 (UTC)

Firefogg, in my experiences, has been able to convert mov files. You can try miro converter or if you'd like, you can host the file somewhere and I can (try to) convert it for you. Mahanga (Talk) 23:22, 24 May 2010 (UTC)

Cannot get rid of the duplicate frames in the output .ogv file[edit]

For the MPEG-4 video file VJSC_1425B-q1.mp4 which has a constant frame rate of 23.98 fps, I can't get an output .ogv file with the same frame rate. The output file frame rate always turns out to be variable, and significantly higher than 24 fps (it's even over 30 fps!). The frame rate is so high because for some reason, the encoder inserts many duplicate frames. The greater the difference between successive frames, the more frequent are these duplicate frames. This is so even if I extract all the frames of the input files as JPEG images and then "assemble" them into an .ogv file (that is, the problem is not in the input file). The constant frame rate is important for this file, because when it is browsed frame by frame (for example to better see some quick events), the duplicate frames are very annoying and disturb the process. I've tried many programmes, but all of them are based on libtheora, even the online converter, and hence the problem persists with all of them. My ffmpeg2theora version is 0.26. Does anybody know a programme that doesn't use libtheora, licavcodec or ffmpeg2theora but does the encoding on its own? If not, the only solution would be to ask for help the Theora developers themselves. Thanks in advance! --Лъчезар (talk) 14:15, 24 January 2011 (UTC)

The problem turned out to be fixed in ffmpeg2theora version 0.27 :) --Лъчезар (talk) 06:42, 27 January 2011 (UTC)

Audio cracked up[edit]

Hi. I made a video with my Photo-camera. After turning 90° i have: [4].
Now i made ffmpeg2theora P1430038.MOV and got [5].
As you can hear audio is totally 'cracked up'. So whats the solution?
Please give me command-line-tools for proper converting. --Itu (talk) 13:45, 13 February 2011 (UTC)

Does not work[edit]

I wanted to upload an AVI file, and converted it with Miro to Lev.N.doNorte 103.ogv. While I can play all other .ogv files of Wikimedia with Firefox, I cannot play this one; but I can play it well with Internet Explorer. What did I wrong? -- sarang사랑.svg사랑 17:36, 24 March 2011 (UTC)

works for me in Firefox 3.6.13. Cheers --Saibo (Δ) 20:29, 24 March 2011 (UTC)
With Firefox 3.6.16 (last update 2011-03-22) it does not. Just found other files, as Avvp1.2.ogv, I cannot play either. -- sarang사랑.svg사랑 07:38, 25 March 2011 (UTC)
I have tested now on another PC (Win Vista) with Firefox 4: works, too. My first test was on Linux.
Tested on Linux with Opera 11: Your video works with native and Cortado (java). The wind pump video only works with Cortado. No clue why not native. But I like to note: download from commons is very slow for me today. Maybe this causes strange problems, too.
Tested on WinVista with IE7: both videos work fine (in the only playback choice Cortado).
Tested on WinVista with FX4: both videos work fine (with native and Cortado).
I would say that it is best to just wait a bit - maybe it plays for you tomorrow. Or update to Firefox 4 (Menu Help → search for updates)
Generally "native" is the best choice since it uses the browser's built-in video playback support without using plugins. Cheers --Saibo (Δ) 15:41, 25 March 2011 (UTC)
As you suggested I installed FF4 − and it worked immediately! The wind pump does as well (native mode), and another file with the same troubles. As an old IT expert I know well: data processing is a strange miracle. Thanx a lot for guiding me to success -- sarang사랑.svg사랑 19:10, 25 March 2011 (UTC)

Video[edit]

If anyone has the necessary software, it would be great to upload this video of Mary Youngblood. Thanks. Adabow (talk) 22:09, 6 May 2011 (UTC)

Are there people watching this page that can offer such help? I'm really struggling to get my .mov file converted... Schwede66 10:46, 5 August 2012 (UTC)

ogv problem : no thumbnail and more[edit]

Hi. I have made an ogv file from images and uploaded. There are some problems with it. I do know why ? Help i s wellcome. TIA. --Adam majewski (talk) 12:33, 25 February 2012 (UTC)

Upload stalling[edit]

Yes check.svg Resolved

I have been trying for days to upload an .ogv video. I have tried defragging, putting it in root directory, changing extension to .ogg etc. 1024 x 708, no sound track, approx 67mb. It keeps stalling. The blue circle thingy just keeps spinning at normal speed for hours, then I get an upload failed message. I have the file on a cloud storage ftp if someone else would like to take a look and possibly try to upload it for me. I have a 320x250 thumb video as well. I can edit the PD tags etc after you upload.

--Canoe1967 (talk) 14:48, 19 March 2012 (UTC)

Try to upload it with Commonist, and tell us if this problem persists. Allan Aguilar (talk) Flag of Costa Rica.svg 03:34, 20 March 2012 (UTC)
Tried Commonist. Uploads 67mb in about 10 min but I get verification errors after uploads succeed. I tried variuos changes with the 11mb thumb file but those fail as well.--Canoe1967 (talk) 23:07, 21 March 2012 (UTC)

┌─────────────────────────────────┘
It seems commons didn't like the Handbrake coversion from .avi, probably the Matroska thingy. I converted with Super, and they worked fine.--Canoe1967 (talk) 22:41, 2 April 2012 (UTC)

Download Theora file[edit]

How do I download a video file from Wiki commons and play it in a Power Point presentation. Thank you for your help

Click the title of the video file just below the video. You may have to right click---save target as.... If there is more than one size, choose the one you want. I don't know if powerpoint can play .ogg files, if it doesn't you may need a plugin or have to convert the file.--Canoe1967 (talk) 18:37, 25 April 2012 (UTC)
To my knowledge, it is not possible to convert files from ogv with a freeware program. Would love to hear a solution... --Mattes (talk) 17:53, 23 September 2013 (UTC)
Did you have a look at Help:Converting_video#Xmedia_Recode? --McZusatz (talk) 17:57, 23 September 2013 (UTC)
VLC media player probably can convert from Theora, and is even free software. Of course, it is better to be able to play files in free formats directly. --AVRS (talk) 10:23, 24 September 2013 (UTC)
Anyway, this article is supposed to make it clear how to convert to ogv or WebM, but many of the tools support conversion between multiple formats. Don't miss the multi-platform solutions section. --AVRS (talk) 10:30, 24 September 2013 (UTC)

Suggestions by the Internet Archive[edit]

http://blog.archive.org/2012/05/01/improved-theoraogg-video-derivatives/ --Nemo 19:55, 3 May 2012 (UTC)

Cannot decode Ogg file (error)[edit]

Hi,

I converted some videos by the Dutch government into ogv files using Open Images wiki (www.openbeelden.nl). The uploads are File:Rent an Ambassador.ogv, File:Aanbieding Prinsjesdagstukken in de Tweede Kamer.ogv and File:Persconferentie Miljoenennota 2013.ogv. I uploaded some other videos using the same conversion and that went well. For these three files I converted, downloaded the OGV and they play well on my computer. However, after uploading them, the Commons file pages give errors "Cannot decode Ogg file: Invalid page at offset X" where X is a big number. (see the line of text just below the video thumbnail - or rather, where the thumbnail would be expected). Could someone determine where the error lies: at the transcoding, downloading, uploading or maybe even the Commons media player? Thanks for the help! If you want to check, the original file (in multiple formats) is available through the link on the file description pages. The pages at OpenBeelden Wiki are respectively: Rent..., Aanbieding... and Persconferentie... where you can download the OGV files. Effeietsanders (talk) 11:48, 6 November 2012 (UTC)

Most likely at the Downloading or uploading. I could down- and upload the first file fine. Now it works. Comparing the file size of both files (the broken one and "my" working one) reveals nothing (same size: 12,021,614 bytes). But the md5sum of both is different. Working file: fc46397ff74f448d3b2654d874540e55. Broken file: da1a1d5432617c6240c2ba38cb437b27. Do you use mobile Internet? Which download manager do you use? --McZusatz (talk) 17:12, 6 November 2012 (UTC)
I'm using Chrome. I tried to down/upload the third one three times and all three times it didn't work... Quite confusing. Effeietsanders (talk) 19:07, 6 November 2012 (UTC)
Maybe you could try another browser or another OS to confirm that the Problem is not with Chrome. --McZusatz (talk) 20:02, 6 November 2012 (UTC)
I was successful in down/uploading the third one with Firefox - but the second one still gives errors... Effeietsanders (talk) 12:49, 7 November 2012 (UTC)
I can't be specific but there seems to be a problem with your Internet connection which leads to bit flips and thus invalid data. --McZusatz (talk) 18:53, 7 November 2012 (UTC)

WebM[edit]

https://blog.wikimedia.org/2012/11/08/introducing-wikipedias-new-html5-video-player/ appears WebM uploads now accepted. There are a couple Category:WebM videos uploaded already. Article ought be updated accordingly. Mike Linksvayer (talk) 22:48, 8 November 2012 (UTC)

Some advice on converting to webm would be helpful. I've found it more difficult that converting to .ogv so far. I've at least figured out that when converting my MP4 to webm I have to deinterlace.--Brian Dell (talk) 02:27, 27 November 2012 (UTC)
I will try to rewrite major parts of the site... --McZusatz (talk) 13:46, 30 November 2012 (UTC)
Brian, I would recommend Miro Video Converter. Should be pretty straightforward. Mahanga (Talk) 15:38, 5 December 2012 (UTC)
I have to deinterlace despite not having to deinterlace to .ogv, and I've been able to do that with ffmpeg's -vf yadif switch. My main issue is just that I should be getting better quality at the same bitrate with .webm than with .ogv but I'm not (I also have to specify a bitrate when converting MP4 to .webm because the default quality is low), which leads me to think that the decoder needs more development before it's advisable to switch to .webm.--Brian Dell (talk) 02:23, 7 December 2012 (UTC)
Do you refer to Miro Video Converter or the ffmpeg command line converter? I also could not get a simple solution for the ffmpeg to convert videos to webm in high quality. For theora it's quite easy as you can just use
ffmpeg2theora input.ext -v 10 -a 10
--McZusatz (talk) 10:18, 7 December 2012 (UTC)
I use the following settings in ffmpeg to transcode (source: 1920x1080) to webm via a batch file on Windows (2-pass encoding without audio):
path~\ffmpeg.exe -i %1 -codec:v libvpx -quality good -cpu-used 0 -b:v 12000k -qmin 10 -qmax 42 -maxrate 15000k -bufsize 10000k -threads 4 -an -pass 1 -f webm  %1_pass1.webm
path~ -i %1 -codec:v libvpx -quality good -cpu-used 0 -b:v 12000k -qmin 10 -qmax 42 -maxrate 15000k -bufsize 10000k -threads 4 -an -pass 2 -f webm  %1_pass2.webm
for videos with audio content replace -an with -codec:a libvorbis -q:a 5
Regards, --Pristurus (talk) 00:47, 11 December 2012 (UTC)

Need more detailed instructions[edit]

Can the instructions include more about the bitrates to use for different video sizes esp HD. Thanks. Shyamal (talk) 08:04, 21 December 2012 (UTC)

Did you already tried the suggestion by Pristurus in the section above? --McZusatz (talk) 11:18, 21 December 2012 (UTC)
Installed Miro - yet to try it out though. Shyamal (talk) 03:27, 22 December 2012 (UTC)
There still needs to be some explanation/analysis of which bitrate is appropriate. Miro's defaults do not generate a useful product, at least for my camera.--Brian Dell (talk) 01:21, 28 December 2012 (UTC)
Agree. My attempt with Miro produces choppy video at least for my Internet speed. compare File:Reef_Heron_foot_stirring.ogv with http://www.youtube.com/watch?v=jfFG7iJqBcc - thanks Shyamal (talk) 06:42, 28 December 2012 (UTC)
You can't define a bit rate to be appropriate. Bit rate always depends on fps, resolution, content, desired quality and codec.--McZusatz (talk) 14:08, 28 December 2012 (UTC)
I also did some testing with Miro and even WebM HD did not produce High Quality output.
If you still use the .ogv container using ffmpeg2theora would be the best choice. ( ffmpeg2theora input.ext -v 10 -a 10 ) --McZusatz (talk) 14:08, 28 December 2012 (UTC)
Most users don´t like the command line.. For Windows and Linux you may try Hybrid. It gives you more control over the encoding process and you will be able to save your settings as profile for further processing. For 1920x1080 content first try a (vp8) rate of 12000kbits/sec. In most cases the resulting video will look fine else try 15000kbits/sec. --Pristurus (talk) 19:02, 28 December 2012 (UTC)

Some thoughts[edit]

  1. There should be a clear description of what formats are allowed, independently of any discussion of specific software. Just saying theora or webm is not sufficient. For example, there is no clear mention of what audio codecs you are supposed to use. There should be a detailed description of the containers, audio and video codecs, and all relevant settings (like max bitrates). This would serve as a definitive reference that software specific explanations can refer too.
  2. The page implies that theora and webm are equally good choices. But it seems that theora videos are automatically converted to webm and that the later is what the embedded player uses by default. If it is determined that webm is better supported by browsers, then uploaders should be instructed to convert anything that is not already in theora (like h264) to webm, and not to theora, to avoid generation loss. That implies that instructions to convert to theora should be removed.
  3. There is no real explanation on how to convert to webm. At a minimum an example with ffmpeg (or avconv) should be provided.

Bomazi (talk) 18:56, 1 February 2013 (UTC)

ogv : how to stop on the last frame ?[edit]

Hi. I have made ogv videos , like : this. It is made from sequence of images. I would like to stop video on the last frame ( displayed number 0.250000). How to do it ? TIA --Adam majewski (talk) 14:53, 8 December 2013 (UTC)

Windows 8.1 RT[edit]

Is there a way for my Dell XPS-10 tablet? I haven't found a converter or even a way to see motion on existing Wikivideos except .GIF ones. Seems to me the latter is the bigger problem. There are many millions of tablet owners who read Wikipedia. Even if an app is released, most still won't understand the problem well enough to find and use it. Not so bad if we merely restrict contributions so they only come from relatively sophisticated users, who know for example what a "file format" is. That doesn't lock out so many millions. Jim.henderson (talk) 14:59, 7 March 2014 (UTC)

VLC-Player[edit]

Hi

-- Cherubino (talk) 12:36, 23 March 2014 (UTC)

Your link on Commons:Forum#Bad_quality_II yields a 23MB MP4-video. I managed to create a 15MB WebM-video (vorbis audio) with FFmpeg, but then I saw that you want a better OGG, not WebM. The source might be not too good; even with normally "good" settings my WebM was far smaller than the input, and in need of some additional sharpen-filter, or similar. So at that point I gave up. If you still feel that your OGG is unacceptable I could try again. –Be..anyone (talk) 13:59, 23 March 2014 (UTC)
It doesnt need audio at all, just a better video quality than Führanlage.ogg, whatever format ;-) -- Cherubino (talk) 17:22, 23 March 2014 (UTC)
I've uploaded a new version, please revert. We're not tackling the same source, your version is 1920×1080 duration 1:11 (??MB), using "save as" on your Forum-link I got 1280×720 duration 1:01 (23MB). –Be..anyone (talk) 18:31, 23 March 2014 (UTC)
much better, thanks. -- Cherubino (talk) 23:30, 23 March 2014 (UTC)

How to remove the audio of a video file?[edit]

In this help page, you mention to "Consider removing the audio…". I suggest to make this words a link to another page that explains how to do it easily & free of charge without violating the law anywhere on this planet.--Sae1962 (talk) 06:00, 5 July 2014 (UTC)

Something like this with avconv:
avconv -i infile -c copy -an outfile
--AVRS (talk) 13:14, 6 July 2014 (UTC)