[mythtv] EPIA M10k - XvMC: Very high CPU (even when paused!!)

[Steven Adeff]

On 1/2/07, Daniel Kristjansson <danielk at cuymedia.net> wrote:
> On Wed, 2007-01-03 at 00:51 +0000, Colin Guthrie wrote:
> > Daniel Kristjansson wrote:
> > > Hmmm, that sounds odd; nothing else played video in-between?
> >
> > I'm guessing that Myth itself is not clearing out the Xvideo port
> > quickly enough (or at all?). This explains why I couldn't get it to work
> > with MPEG2VIDEO again as I was using network control to restart
> > playback. It's all falling into place :)
>
> Can you try the mythtv-vid branch, to see if this is fixed
> there? Stanley rewrote the preview video code and cleaned
> it up quite a bit in the process.
>
> > Having now done more reasearch while writing this email, the preview
> > video does always use MPEG2VIDEO output, rather than select
> > MPEG2VIDEO_XVMC_VLD. Not sure if this is deliberate or required for the
> > scaling.
>
> This is deliberate, and is also why preview uses more CPU.
> Some video cards can't handle scaling an accelerated video
> down to preview size. Stanley's code is written to avoid
> accelerated video only when needed, but I need to add a
> couple of OSD renderers to that branch before most people
> will be able to use it.

So, currently, with cards that do support scaled accelerated video, is
acceleration used for the previews? If it does, I assume it only uses
it when it is enabled for playback? Could it be a separate option so
that the preview uses acceleration but the normal playback doesn't
need to?

-- 
Steve