[mythtv-users] Mac OS X video profile settings in 0.21?
Monkey Pet
monkeypet at gmail.com
Thu Mar 13 17:35:04 UTC 2008
Hi Todd, can you provide a binary for us to test? I want to see if
this patch solves the issue for me. Thx.
On 3/13/08, Todd Ignasiak <todd.ignasiak at gmail.com> wrote:
> On Sun, Mar 9, 2008 at 1:37 PM, Todd Ignasiak <todd.ignasiak at gmail.com> wrote:
> > I just upgraded my Mac OS X MythTV setup to 0.21, and ran into
> > problems with video playback performance.
> >
> > 1080i playback went from using 80-90% of one CPU (Mac Mini 1.66GHz
> > Core Duo) in 0.20.2 to 135-155% CPU with 0.21 and choppy playback.
> > I have tried a bunch of settings for the video profile, but nothing
> > has brought the CPU down from the 150% range. Even 720p playback,
> > which used to be around 65-70% cpu load, is at 130%+.
>
>
> After a bunch of experimentation, I finally located a Trac ticket
> which had a patch to enable MMX in Leopard. After applying that
> patch, video decoding CPU usage is back down in the ballpark that 0.20
> was in. Are these 'known issues' posted anywhere? It is not
> mentioned in the release notes, or any mailing list, wiki, etc. that I
> could find.
>
> The patch is here: http://svn.mythtv.org/trac/ticket/4200
>
> I also enabled the Mac video acceleration (dvdv) option. For 720p
> playback, it looked very promising.. CPU usage was around 50%. But,
> 1080i playback didn't work right, the video output was corrupted with
> tiles of what appeared to be unused video memory (e.g. chunks of the
> Front Row menu were shown when video playback was attempted).
>
>
>
> > I see that the dvdv acceleration is listed as a new feature in 0.21.
> > Does this mean that it is now stable enough for common usage? My
> > attempts at using it in the past didn't go well. Are there any
> > limits on its support (is Leopard okay?), or is it documented
> > anywhere? I am not positive, but I don't think the frontend
> > configuration generated by osx-packager.pl listed Mac acceleration as
> > being enabled.
> >
> >
> > The settings options appear to be:
> >
> > Decoder: Standard, libmpeg2,
> > Video Renderer: opengl, quartz-blit
> > OSD Renderer: softblend
> >
> > Decoder: Mac hardware acceleration
> > Video Renderer: quartz-accel
> > OSD Renderer: opengl3
> >
> > I thought the closest approximation of 0.20 settings was Standard
> > MPEG2, Quartz-blit, softblend. But, that was still up around 150%
> > CPU.
> >
> >
> > Anyone having better results for Mac OS playback?
> >
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