I'm using libwebkit (with python-webkit) to render a page that plays a video. This application works fine in a Ubuntu 11.04 Desktop, Nvidia card and lots of libraries and software installed, but in a fresh Ubuntu 11.10 Server with intel 82945G/GZ card the video does not play.

I guess either some codec package is missing or it's a driver problem. What could be missing for this to play?

I'm trying with this video: http://video.eustasy.co.uk/480/

EDIT: doesn't look like a driver problem. With chromium I can play the video, but with libwebkit + python-webkit the video just shows the first frame and doesn't play. Any hints on what package could be missing?

SOLVED: apparently it had to do with lack of audio. While chrome would play the video with no sound, libwebkit wouldn't start video. Adding user to audio and video groups solved the problem.