[MPlayer-users] mplayer alsa behavior playing video vs audio.

[Reimar Döffinger]

On Fri, May 02, 2014 at 09:44:23PM +0100, Andy Furniss wrote:
> Andy Furniss wrote:
> 
> >>>The thing is I can't reproduce it when playing video with s/w
> >>>decode.
> 
> >>>mplayer -ao alsa:device=hw=1.3 a video
> 
> It turns out that I can reproduce playing video now - but it has to be SD -
> I was testing with HD 264 and it seems that by luck these are loading up my
> CPUs enough or something, so they always work.
> 
> Cpufreq on_demand is not the issue here I already disabled that.

I doubt it's your CPUs.
It sounds more like DPMs/reclocking/whatever (basically, cpufreq for
your GPU).
I forgot what you use, but for Radeon cards there is some sysfs entries
that allow forcing power management off and instead a fixed
frequency/speed.
That might help for example.