[mythtv] Stuttering on live tv

[Dennis Gustafson]

On 04/06/2018 03:00 AM, Stuart Auchterlonie wrote:
> On 06/04/18 01:53, Dennis Gustafson wrote:
>> Glad to see this is resolved!   I just built from 29/fixes this 
>> morning and it doesn't look like it has made it there yet.    Is 
>> 'master' stable enough for every day use, or would I be  better off 
>> pulling individual the fixes back?
>>
>> Thanks again,
>>
>> Dennis
>>
>>
>>>
>>> This was a lons-standing issue that was thought to be fixed here
>>>
>>> https://code.mythtv.org/trac/ticket/12318
>>>
>>>
>
> Hi Dennis,
>
> The patch should apply fairly easily to fixes/29. Please give it a try
> and report back on the ticket
>

I ported the fix to 29 and it does help.  I also tried on "master" and 
it behaves the same as my back-port.

The fix is definitely an improvement, but does not eliminate all 
stuttering and the stuttering does become less the longer it plays. 
Would it be possible to make the the amount that it pauses larger the 
first time it occurs? I would prefer one big pause at first vs. multiple 
glitches during playback.

Here is a sample of the output ( with audio/visual glitches occurring at 
the same time ):

2018-04-08 13:52:01.852166 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 1.868, Total: 2.302
2018-04-08 13:52:02.030980 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 2.035, Total: 2.302
2018-04-08 13:52:02.184300 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 2.169, Total: 2.302
2018-04-08 13:52:05.429398 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 5.372, Total: 5.973
2018-04-08 13:52:10.744901 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 10.677, Total: 11.378
2018-04-08 13:52:14.244628 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 14.181, Total: 14.648
2018-04-08 13:52:41.304407 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 41.208, Total: 41.808
2018-04-08 13:55:23.234799 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 203.137, Total: 203.27
2018-04-08 13:55:29.511918 N  Player(1): Pause to allow live tv catch 
up. Position in sec. Current: 209.376, Total: 210.143