[mythtv-users] Mac OS X video profile settings in 0.21?

[Todd Ignasiak]

On Thu, Mar 13, 2008 at 11:25 PM, Monkey Pet <monkeypet at gmail.com> wrote:
> Todd provided his binary for me to test.  Unfortunately, on my intel
>  macmini (1.83GHz Intel Core 2 Duo, 1GB of memory), i didn't see it
>  make any difference on the 1080i playback and still had choppy
>  playback (as observed from watching the video playback).  However,
>  Todd mentioned something about the 1080i playback not working right in
>  his post.

For me, 1080i works fine with software decoding.   I only ran into
problems when trying to do 1080i with the hardware accelerated video
playback.

What video profile settings are you using?  I use a custom profile, set to:

Resolution > 720p:  Standard Decoder and Quartz-blit renderer and
Linear Blend deinterlacer.
720p: "Mac hardware acceleration" Decoder and quartz-accel renderer
Res < 720p: Standard Decoder + Quartz-blit renderer + Linear Blend.


I am running on a 1.66GHz Core Duo Mini with 1GB RAM, displaying on a
1280x768 DLP Projector connected via DVI->HDMI.

>  Temporary hosted here: http://yoeu.net/~fa/mfe_0.21mmx.zip
>
>
>  On Thu, Mar 13, 2008 at 10:35 AM, Monkey Pet <monkeypet at gmail.com> wrote:
>
>
> > 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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>  > >
>  >
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