Just a brief note to share that I have updated the video accessibility demo at http://www.annodex.net/~silvia/itext/elephant_no_skin.html.
It should now support ARIA and tab access to the menu, which I have simply put next to the video. I implemented the menu by learning from YUI. My Firefox 3.5.3 actually doesn’t tab through it, but then it also doesn’t tab through the YUI example, which I think is correct. Go figure.
Also, the textual audio descriptions are improved and should now work better with screenreaders.
I have also just prepared a recorded audio description of “Elephants Dreams” (German accent warning).
You can also download the multitrack Ogg Theora video file that contains the original audio and video track plus the audio description as an extra track, created using oggz-merge.
As soon as some kind soul donates a sign language track for “Elephants Dream”, I will have a pretty complete set of video accessibility tracks for that video. This will certainly become the basis for more video a11y work!