[mythtv-users] Stutters with 1080i at 25fps H264 AC3 2 channel audio on a 50Hz display live playback.

[Kevin Johnson]

On Fri, Dec 9, 2016 at 3:28 PM, John Pilkington <J.Pilk at tesco.net> wrote:

> On 09/12/16 22:29, Stephen Hocking wrote:
>
>> Hi all,
>>
>> One of our TV channels in Australia, ABC20, was recently created as per
>> the standard in the subject. It seems prone to stuttering on live
>> playback. The system has a Nvidia 610 card (the only passively cooled
>> thing I could find at the time) using vdpau vdpau, for playback and a
>> quad core Skylake i5. I see messages like
>>
>> Dec 10 09:01:51 bong mythfrontend.real: mythfrontend[6007]: N
>> CoreContext mythplayer.cpp:2176 (PrebufferEnoughFrames) Player(2):
>> Waited 1870ms for video buffers AAAAAAAAAAAdLLLL
>> Dec 10 09:01:51 bong mythfrontend.real: mythfrontend[6007]: N
>> CoreContext mythplayer.cpp:2176 (PrebufferEnoughFrames) Player(2):
>> Waited 1973ms for video buffers AAAALAALLAAdAAAA
>> Dec 10 09:01:54 bong mythfrontend.real: mythfrontend[6007]: N
>> CoreContext mythplayer.cpp:2176 (PrebufferEnoughFrames) Player(2):
>> Waited 102ms for video buffers ALLAAAAAdAAADALd
>>
>>
>> When I'm playing back a recording it's fine. When I'm playing back
>> something that's in the process of being recorded, it's fine, which
>> seems to rule out bandwidth to/from the recording disk (which is NFS
>> mounted) as an issue.
>>
>>
> I believe the usual advice is to pause live tv for a few seconds and
> resume.  Don't know about the time-stretch, though.
>
> John P
>

I have created a ticket for this issue, but I think very few people see
this so the priority for a fix is low.

https://code.mythtv.org/trac/ticket/12933



>
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