[mythtv-users] MPEG4 (mp42) audio but no video

[Paul]

I have some videos I've taken with my mobile phone which are .mp4 files and 
the video info is:

Format: MPEG-4
Format profile: Base Media / Version 2
Codec ID: mp42

Video
ID: 1
Format: AVC
Format/Info: Advanced Video Codec
Format profile: High at L4.0

When I play them with MythTV (0.24.3-fixes) I get audio but no video and 
there are no errors in the MythTV FE log.

I am using an Atom/ION system and using Nvidia drivers 304.64 from X-Swat on 
launchpad with Ubuntu 11.10 (with all updates).
A few months ago the video files worked and the only change I have made is 
update the Nvidia drivers (from 304.37 to 304.64) and re-compile MythTV. I 
use the VDPAU playback settings but I also tested with the Normal playback 
setting and I was still not getting any video.

Any help appreciated.

Paul