[mythtv-users] Help in playing hdtv

[Brad DerManouelian]

On Feb 11, 2008, at 1:22 PM, Brad DerManouelian wrote:

> On Feb 11, 2008, at 1:13 PM, Juergen Sachs wrote:
>
>> I did not have this option in my device section. So I added the
>> option and
>> restart the x server (init 3 -> init 5) same problem.
>> Now it plays smothly for about half a second, the stops, then
>> resumes, then
>> stops... But picture quality is brilliant :-)
>>
>> But still my cpu is nailed to 100%. Ok this is only 50% of the
>> overall cpu
>> power but I think it is still to much.
>>
>> I am using the gfx driver from nvidia, but do not know the exact
>> version if
>> this matters.
>>
>> Maybe my gfx card is to weak for the job ?
>> Any more tips ?
>
> It's probably time to start playing with your TV Playback options.
> Turn off any deinterlacer you have running to see if that helps. Turn
> on aggressive audio buffering and check again. Also, can you tell if
> you have OpenGL working correctly? Oh, one more thing to check in your
> xorg.conf:     Load "glx" in the modules section. I think that's the
> option that made my system go from "completely unusable" to "Hooray it
> works perfectly".

Also, when you look at top, press the number 1 so you can see how much  
is being used for each core. X should be using one of your cores and  
mythfrontend should be using the other (assuming they are both using  
over 50% of each core). If they are both using the same core it could  
be because you have some other process taking up too much CPU to allow  
those two processes to run on separate cores. Running commflagging or  
transcoding without allowing them to be nice will do this.