[mythtv] 2019-render: nvdec decoding artefacts in the editor

[John Pilkington]

On 05/11/2019 18:24, John Pilkington wrote:
> On 05/11/2019 17:35, Mark Kendall wrote:

>>
>> Peter has also just offered to resync to latest FFmpeg - so hopefully
>> we'll pick up sundry fixes like this.
> 
> That's great - but I should clarify.  When I said that ffmpeg works, I 
> was referring to mythffmpeg, not current ffmpeg master.
>>
>> Regards
>> Mark

Amazingly d88a61dd rpms built and are running under Fedora 30. 
Unfortunately that hasn't fixed the static frame blockiness, and now I'm 
getting a brief shimmering effect after any jump :-(

The OSD reports 1920x1080 at 25fps, H.264 nvdec, 2xGLSL linearblend.  The 
Firestick frontend and leanfront both play - apparently as before - with 
the new backend.

John P