I think we should have a page about videos called Commons:Video (or Help:Video?). I'm going to try to construct one slowly here and move it to that location when it's worthy of it.
- The importance of video - some things can't be shown with just a static picture. Also, what shouldn't be added as video, e.g. where only the audio is relevant.
- Finding video online (Flickr, YouTube, other sites; OTRS), making your own
- Editing video, e.g. removing/changing sound; cutting etc.
- Uploading video: Categorization (video categories, don't forget normal categories)
- Audio: Many videos include audio. Separate audio versions? Categories for video with/without audio?
- File size, (length/quality), bandwidth and performance