[mythtv-users] hdhr file troubles on atv2

Raymond Wagner raymond at wagnerrp.com
Mon Feb 14 15:03:21 UTC 2011

On 2/14/2011 09:51, David Evans wrote:
> I picked up a atv2 about a week ago and I have been tinkering with it.
>   I have xbmc running on it and using the built in myth:// protocol I
> can play SD files without any trouble.  The issue that I am having is
> with files produced by the hdhr.  They will load up but I get a severe
> stutter with the audio and they are unwatchable.  I tried loading the
> files via a smb mount and I get constant buffering.
> I figured the solution would be to transcode the files down to a mpeg4
> format that should be easier for the ATV2 to play but I'm struggling
> with the settings of mythtranscode to get a file that plays cleanly.
> If I could get any insight it would be great.

The ATV2 does not support hardware acceleration of the MPEG2 output by a 
digital tuner, nor the HD MPEG4 output by mythtranscode.  That means you 
are relying on the woefully inadequate 1GHz ARM for software decoding.  
Until XBMC has fully explored the VideoToolBox API and documented what 
the device is actually capable of, rather than what Apple has restricted 
the device to, the only authoritative reference on the decoding 
performance of that device is on the Apple site.


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