[mythtv-users] Poor H.264 1080p playback

Peter Bennett pb.mythtv at gmail.com
Fri Jan 4 16:07:21 UTC 2019

On 1/4/19 10:47 AM, Richard Shaw wrote:
> On Fri, Jan 4, 2019 at 9:40 AM Stephen Worthington 
> <stephen_agent at jsw.gen.nz <mailto:stephen_agent at jsw.gen.nz>> wrote:
>     On Fri, 4 Jan 2019 08:16:40 -0600, you wrote:
>     >On Fri, Jan 4, 2019 at 7:16 AM Stephen Worthington
>     <stephen_agent at jsw.gen.nz <mailto:stephen_agent at jsw.gen.nz>>
>     >wrote:
>     >
>     >>
>     >> There should not be any problems with that combination - the GT730
>     >> does everything that MythTV needs.  It is more likely you have
>     one of
>     >> the settings wrong.  Check that you are using the VDPAU High
>     Quality
>     >> profile, and that you have set that profile to use all 4 CPU cores.
>     >>
>     >> What sort of visual problems are you seeing?
>     >>
>     >
>     >No skipping or anything just video "slow downs". It's just not
>     "smooth".
>     So this happens only on H.264 videos?  What is the source of those
>     videos?  Are they all recordings, or does it happen on downloaded
>     H.264 files as well?  Are the affected files interlaced?
> H.264 recordings from Comcast seem to play back fine. It's only 
> archived Blurays (which is why I assumed maybe it was a bitrate issue).
> Thanks
> Richard
You did not mention what version of MythTV you are running. With V30 
(master) you can try the new AVSYNC2 in the playback advanced settings. 
Also run with -v playback and see if it is dropping frames or waiting 
for video buffers. Those messages will tell where the problem is. 
Waiting for video buffers means a decoding problem, dropping frames 
means a rendering problem.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20190104/97c71635/attachment.html>

More information about the mythtv-users mailing list