[mythtv-users] XvMC Problem and Question

[Brian Wood]

On Feb 10, 2006, at 2:09 PM, Brad Fuller wrote:

> Brian Wood wrote:
>> On Feb 10, 2006, at 1:11 PM, Brad Fuller wrote:
>>
>>
>>> Brian Wood wrote:
>>>
>>>> On Feb 10, 2006, at 12:50 PM, Brad Fuller wrote:
>>>> 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
>>>
>>>
>> Well there is a warning on the "realtime priority threads" to disable
>> it if video freezes on playback.
>>
> note that I always had that on. It's when going suid that it freezes.

Having it on does nothing unless the suid bit is set, so that makes  
sense.
>>
>>
>>
>> What's your CPU load when playing without suid?
>>
>  around 20%-30%

Well that's not too bad. Maybe you're having a disk I/O limitation?  
Other than that I don't know.