Omnivisio, (http://www.omnisio.com/) allows you to annotate and add comments to the video.

This looks real good. Thank-you!

FYI we will be launching the slide-sync feature in the next couple of days which we hope will be really useful for video lectures.

Ryan

Look at Viddler (http://www.viddler.com). You can put markers in the video progress bar indicating various chapters, and other supplemental information, such as lecturer names, etc. For an example of large sized playback with markers, check out http://tv.winelibrary.com.

Have you looked at YouTube's API:

     http://www.youtube.com/dev
     http://code.google.com/apis/youtube/overview.html

THis was one of my options. I am looking into it, but thanks.

Google Video

TED.com doesn't let you upload videos. The site only hosts videos from its own conferences and the player is probably custom-made.