[mythtv] render2019 comments

[John Pilkington]

On 30/09/2019 07:55, Mark Kendall wrote:
> Thanks for the feedback John - comments below.
> 
> On Sun, 29 Sep 2019 at 12:56, John Pilkington <johnpilk222 at gmail.com> wrote:
>>
>> I briefly tried current render2019 789dda6 with Fedora29 x86_64 nvidia
>> GT_710 430.40, but have gone back to master.
>>
>> Primary reason is that mythcommflag --rebuild and mythpreviewgen both
>> 'Failed to initialise VAAPI connection' and quit.  My cutting script
>> uses these.
> 
> OK  - there are a couple of static hardware decoder checks at startup
> (VDPAU, VAAPI, NVDEC) that need to be cleaned up when either running
> headless or without a GUI. They'll be fixed in the next few days.
> 
>> Also panning shots in 1080p DVB-T2 recordings are as seen through jelly,
>> worse than in master.  DLNA does it best (although subtitle sync seems
>> broken there).  But I didn't try much fine-tuning.
> 
> I'm pretty certain that you will be using software decoding as the
> decoder/renderer selection has changed in the video display profile
> settings screen. For example there is no longer a VDPAU renderer - it
> just uses opengl (the renderer selection should show opengl-hw).
> Without explicitly setting them to something new you will probably get
> software decode - and hence performance will be poor? (not sure what
> CPU you have)
> 
> I'm assuming there is nothing special about those recordings? (Do you
> have a 60 second sample?) Otherwise some -v playback logs would be
> informative.
> 
> Thanks again and regards,
> Mark

Thanks Mark:  This is a 2.8 GHz Core2Duo system, so no VAAPI.  IIRC the 
cpu loads were around 40%, while VDPAU usually gives perhaps 15%.  Clip 
link below.   I should be able to reinstall if more tests would help.

https://drive.google.com/open?id=1SSxabQJVYN-PRirSF_5zPwEd2FYeaoWp

John