[mythtv-users] Livetv stutter

Tim Draper veehexx at zoho.com
Wed Oct 18 20:05:45 UTC 2017

 ---- On Wed, 18 Oct 2017 20:34:28 +0100 Peter Bennett <cats22 at comcast.net> wrote ---- 
 > On 10/18/2017 08:51 AM, Tim Draper wrote: 
 > >   ---- On Wed, 18 Oct 2017 13:44:32 +0100 Tim Draper <veehexx at zoho.com> wrote ---- 
 > >   > i swear theres a bug trac report for it, but cant find it right now. i think it first occured part way through 0.27 release and it's stuck like this ever since. 
 > > 
 > > found one bug refering to a short pause sorting it out: https://code.mythtv.org/trac/ticket/12318 
 > > not the one i thought i was looking for, but it's been outstanding for a while. maybe worth a bump. 
 > > 
 > > 
 > It seems that this is affecting a lot of people, so perhaps needs some  
 > attention. 
 > Unfortunately I don't see it and fixing something I cannot recreate is  
 > very difficult. 
 > Can you let me know whether simply waiting 30 seconds or so and enduring  
 > the interruptions for that time, does the problem resolve or does it  
 > continue for as long as you watch the channel? 
 > Peter 
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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

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