[mythtv-users] XvMC Problem and Question

[Brad Fuller]

Brian Wood wrote:
> On Feb 10, 2006, at 12:50 PM, Brad Fuller wrote:
>
>   
>> Michael Chmilar wrote:
>>     
>>> I am using Gentoo x86_64 on an Athlon-64, latest NVidia 81xx driver,
>>> opengl vsync disabled, Standard XvMC selected in mythfrontend, kernel
>>> deinterlacing, NVidia fx5200 card.
>>>
>>> Playback is smooth. No stuttering when the OSD comes up, but there is
>>> an audio drop-out for a moment when the OSD appears, and again when
>>> it disappears.
>>>
>>>       
>> Interesting... my audio is perfectly fine, it's just the video that
>> jumps around until the OSD is gone. And this only happens in "cpu
>> intensive" HD content.
>>     
>>> I was getting some stuttering until I checked "enable realtime thread
>>> priority" and made mythfrontend suid.
>>>
>>>       
>> I have "Enable realtime priority threads" checked.
>>
>> How do you do run mythfrontend suid. I will search for this in the
>> archives.
>>
>>     
>
> chmod +s /usr/bin/mythfrontend  (as root)
>   
Thanks.
I just tried it. And, when FF the video just freezes and I get the warnings:
"prebuffering pause"
over and over. Had to Ctrl-C out of mythfrontend

I also get the warning (when going to HD content):
"realtime priority would require SUID as root"

After I:

chmod -s /usr/bin/mythfrontend

Then, no problem (except of course, the original problem of frames that jump around when when the OSD is present. BTW, I tried this on two programs Lost and Dancing with the Stars (both ABC, SF Bayarea)  - both had stuttering audio with the frames. So, I guess I was wrong about saying that the problem was only video)

brad



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