[mythtv-users] Can't see ogv videos

[Mike's JdJ]

Something changed and I don't know where to look.

In MythTV FrontEnd, when I play a .ogv video, I get the 
soundtrack, but a black screen.

The files used to play fine, but now have no video.

The videos are stored in var/lib/mythtv/videos

The files play fine with VLC and Videos.

mp4 and mkv files in the same folder play fine in the MythTV 
FrontEnds.

I used to watch the same files fine on Ubuntu 11.04 and MythTV 
0.24.  Now I am on Ubuntu 12.04 and MythTV v0.27.4-64-g8fd277b.

The ogv black screen FrontEnd problem is on the MythTV BackEnd 
desktop AND the remote FrontEnds.

A typical ogv stream is Xiph.org's Theora Video, resolution 
400x304, display resolution 400x300, frame rate 29.97, mythtv 
permission Read-only

In Ubuntu Software, I have the main, universe, restricted, and 
multiverse checked.  No proprietary drivers.