Google may own both Google Video and Youtube, but that doesn't mean that the two have moved towards parity, yet. I tried uploading my Michael Chabon book talk clips to both services last night. I tried:

• Google Video's Web upload form
• Google Video's Desktop uploader
• Youtube's Web upload form

The results are clear: Youtube wins for both reliability and speed. The Google Video Web uploader failed three times on me and all three failures occurred after almost an hour of waiting. Youtube's Web upload form was 3/3 and the videos were ready for viewing immediately after they finish. This was unlike Google Video's Desktop uploader, which took several hours to 'process' the videos after the uploads finish, and the uploads were much slower than Youtube. The Desktop uploader also has a strange behavior in which it will reject punctuation marks in your video's filename. As a software programmer, I can't think of any reason why this is necessary -- it would be trivial to remap the characters, as the Web uploader must have to do.

Another plus for Youtube: the Web upload form tracks the upload progress so you know if it is still working.