[mythtv-users] Livetv stutter

David Birch david.birch at gmail.com
Thu Oct 19 02:44:01 UTC 2017

Hi Peter, should i paste anything up to the trac ticket - debug info or
anything else to dump? I've got the source build going so i can dump
whatever values might be helpful if they're not in std log output.


On Thu, 19 Oct 2017 at 1:30 pm, Peter Bennett <cats22 at comcast.net> wrote:

> On 10/18/2017 04:05 PM, Tim Draper wrote:
> > tried it for 5mins without pausing; no difference... it continues to
> stutter.
> > in playback data, the FRAMES DECODED/FREE shows figures like 8/17 when
> stuttering occurs. Pausing liveTV for a few seconds puts it to a 20/2
> figure and stuttering disappears, so assuming the 'frames free' counter can
> be relied upon, this might be something to watch to provide a suitable fix?
> > another option would be to watch the available buffer, to ensure it's
> above (for example) 25% filled?
> >
> > fwiw, i'm experiencing this on a 2820 NUC that uses VAAPI
> I wish I knew how to create this problem, then I may be able to fix it.
> In my case, watching Live TV occasionally gives a short pause or two in
> the audio in the first 5 seconds or so, then is fine. The short pause
> that I do get, results in the recording catching up to the playback in
> case it is slightly behind.
> I will look at it under ticket
> https://code.mythtv.org/trac/ticket/12318
> Perhaps that pause is not actually working the way I assume. It could be
> that your signal has a bigger than usual audio and video offset and the
> playback is never rectifying itself.
> Peter
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