Description of problem:
I upgraded from Fedora 18 (nv driver) to 19 (nouveau driver, as 19 got rid of nv), and all mythtv frontend viewing started having double-speed video, but the audio was still 100% ok (normal speed). 18 to 19 did not change the myth versions.

I tried every myth option, every decoder, every deinterlacer, and it stayed double speed. Even setting audio to NULL didn't help. Did it on live TV as well as recordings.

When I did a while-watching options->playback->playbackdata it would show the mpg was 29.97 fps and the playback FPS was 59.75 to 59.99!!

Testing with
mythavtest -O LocalHostName?=abcdefg /data/Mythtv/Recordings/1888_20130708085900.mpg
made no difference. It still played double-speed.

Testing with mplayer /data/Mythtv/Recordings/1888_20130708085900.mpg
and the video was fine (not double-speed). Problem is in myth only.

I switch to the binary nvidia driver and the video was fine (not double-speed) without any other changes. So the problem appears to be unique to the nouveau driver.

The output from myth while double-speed shows nothing out of the ordinary.


Version-Release number of selected component (if applicable):
xorg-x11-drv-nouveau-1.0.9-1.fc19.i686
mythtv-frontend-0.26.0-10.fc19.i686
kmod-nvidia-304xx-3.10.4-300.fc19.i686.PAE-304.88-2.fc19.i686
xorg-x11-drv-nvidia-304xx-304.88-12.fc19.i686


How reproducible:
always


Steps to Reproduce:
1. boot and start X using nouveau
2. run mythfrontend
3. playback any recording

Actual results:
Plays video at double-speed.  Audio is at normal speed.

Expected results:
Plays video and audio at normal speed.

Additional info:

Seems like it *might* be only on older 4-digit nvidia cards and not newer 3-digit cards based on other "me-too" reports.  This may explain why it's not hitting more people.

See mythtv upstream bug:
http://code.mythtv.org/trac/ticket/11729

Though I think this is probably a nouveau thing, not a myth thing.