[mythtv-users] glitchy audio with vdpau

[Ma Begaj]

2009/3/25 Alex Williamson <alex.l.williamson at gmail.com>:
> On Tue, Mar 24, 2009 at 8:11 PM, Michael T. Dean
> <mtdean at thirdcontact.com> wrote:
>> On 03/24/2009 10:03 PM, Alex Williamson wrote:
>>> I have both "Extra audio buffering" and "Aggressive Sound card
>>> Buffering" enabled, but the first is the only one that seems to make
>>> much difference (the second only adds the audio_buffer_unused log
>>> output below).
>>
>>
>> Don't know about the rest, but you really shouldn't have both enabled.
>> You almost definitely want the first and really the second should almost
>> never be used.
>>
>> http://www.gossamer-threads.com/lists/mythtv/users/369073#369073
>
> Thanks for the reference.  I typically only use the extra buffering,
> but thought I'd go through all the options given the problems I'm
> seeing.  FWIW, I've also discovered setting my minimum cpufreq scaling
> to 1.8GHz is enough to avoid the glitches.  Is there already some
> facility in mythtv to run an external script at the start and end of
> video playback?  Thanks,
>
> Alex

you should set your cpu_governor to "conservative" and that should be
enough. "conservative" changes cpu speed very fast and very reliable.

echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor