I reported this error but I'm still waiting on the moderators to post
it, I think. Right now, as far as I can see, you can only update a
video entry that you've just uploaded. You can force feed the
edit_uri, but that isn't guaranteed to work either.
I'm going to assume that you're authenticated as well, since I had the
same issues while passing in valid authtokens. I ended up just
directing using the google api via some http verbs.
Michael Bernstein
simo...@gmail.com