[mythtv-users] Cannot play recorded HD H264, advice on faster hardware needed

[Paul Kendall]

On Saturday 17 May 2008 09:55:08 Carl-Magnus Björkell wrote:
> klaas de waal wrote:
> > Thanks for all the help!
> > The conclusion is for now:
> > - decoding this flavour of H264 in MythTV is not yet fully correct
> > - the decoding is a problem of ffmpeg and not of MythTV
> > - only one core is used in decoding
> > - when ffmpeg decoding for H264 is fixed then we need the fastest
> > processor there is for this content
> > - when ffmpeg is not only correct but also multithreaded so that it uses
> > all cores of a dual- or quadcore then a cheaper/low-power processor can
> > be used.
> >
> > Again, thanks for the testing and the clarifications,
> > Klaas.
> >
> >
> > On Thu, May 15, 2008 at 7:18 AM, Steven Ellis <steven at openmedia.co.nz
> > <mailto:steven at openmedia.co.nz>> wrote:
> >
> >     On Thu, May 15, 2008 1:48 pm, Sarah Katherine Hayes wrote:
> >      >> I have put a 9MB fragment (file called sheep9.mpg) here:
> >      >> http://www.box.net/shared/yeo9ymakg0
> >      >>
> >      >> Maybe somebody with MythTV on fast processor can check if they
> >      >> can play this file and advice me on what hardware (processor
> >      >> /video
> >
> >     card)
> >
> >      >> I need for this?
> >      >
> >      > Totem + mplayer gave a green corrupted frame, then insta-death.
> >
> >     Internal
> >
> >      > just died and killed the Frontend (I've never, actually seen that
> >
> >     happen
> >
> >      > before) Ubuntu 8.04 + updates + Mythbuntu 0.21-fixes packages.
> >      >
> >      > *Note: I'm getting really annoyed with Ubuntu right about.... now,
> >      > if this was Gentoo I'd slap in the multimedia overlay*
> >      >
> >      > Makes me think it's the same type of h264 as the HD-PVR pumps
> >
> >     out, which
> >
> >      > seems to be using 'something'; that something ain't quite as well
> >      > supported/optimized as the common garden variety found in my Anime
> >      > shows.  So it seems to require an excessive amount of grunt,
> >
> >     which will
> >
> >      > obviously change. :)
> >      >
> >      >
> >      > Finger the the air requirement, 2.8Ghz C2D in the Desktop flavor.
> >
> >     I've just tried this with MPlayer SVN r26779 on an Intel T2400 and it
> >     struggles to play. Also I'm seeing the interlaced artifact issues due
> > to the partial interlaced PAFF support in FFMPEG.
> >
> >     Steve
> >
> >     --------------------------------------------
> >     Steven Ellis - Technical Director
> >     OpenMedia Limited - The Home of myPVR
> >     email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
> >     website - http://www.openmedia.co.nz
> >     _______________________________________________
> >     mythtv-users mailing list
> >     mythtv-users at mythtv.org <mailto:mythtv-users at mythtv.org>
> >     http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> >
> >
> > ------------------------------------------------------------------------
> >
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>
> The only way (that I know of) to date to play high resolution h264
> material on linux is to use the coreavc codec via the coreavc for linux
> project (http://code.google.com/p/coreavc-for-linux/). Qualitywize I
> can't make out any difference between ffmpeg and coreAVC, but speedwize
> coreAVC wins hands down.
>
> CoreAVC is a multi-threaded codec that, even when single threaded, is
> much faster than the current ffmpeg decoder. It's quite a hassle to get
> to work, but it _does_ work. If all other options are exhausted, this
> codec is definitely worth a try. The codec costs $15, but it's a small
> price to pay if you want to watch HD h264 material on your mythtv-box,
> since it is, currently, afaik the _only_ way.
>
>
> -Calle
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I tried this codec on my myth system in NZ and it worked quite nicely with the 
interlaced channels no blocky artifacts like ffmpeg, but it completely failed 
on the 720p channels. Multiple images all in green!

Paul