As requested in the IRC, a quick test of the render-2019, now from the
other side of the Channel.
Test on my development system: Intel i7-7700, only built-in Intel
graphics (no Nvidia card).
Software: Fedora 30 with LXDE desktop.
Mythfrontend graphics setting: (Setup / Video / Playback / Current
Video Playback Profile) VAAPI2 Normal
Mythfrontend plays in a 1280x720 window on a 1900x1200 desktop.
Content is 50Hz but monitor is 60Hz.
This is for me the usual setting.
Build: no problem.
Mythfrontend startup error message:
[AVHWDeviceContext @ 0x1422d00] Failed to initialise VAAPI connection:
-1 (unknown libva error).
Cannot load libcuda.so.1
Playback of recordings:
MPEG2 SD, i50 OK
H264 1080i50, playback OK but jump back/forward shows one frame
out-of-order about 0.5 second after the start
HEVC 1080p50 image not correct when panning, top of screen seems to
lag and judder; bottom looks ok.
Short time of blocking artefacts when jumping back and forth.
Video playback profile changed to OpenGL High Quality
MPEG2 SD, i50 OK and jumping back and forth now much faster than with
the previous profile.
H264 1080i50 OK, no out-of-order frames. Noticed also some lag/judder
at top of screen.
HEVC 1080p50 image not correct when panning, top of screen seems to
lag and judder; bottom looks ok.
Short time of blocking artefacts when jumping back and forth.
Both profiles show interlacing artefacts (or lack of de-interlacing).
Create new profile
-> ffmpeg & opengl
Change maxcpu from 1 to 4
Change deinterlacer quality (single rate) from None to High quality
Change deinterlacer quality (double rate) from None to High quality
Same for:
-> ffmpeg & opengl-yv12
Everything else left default.
Result (on all 3 content types): Interlacing is OK, other issues still present.
Also: some tearing near the top but this is also present (although
much less) in the master.
About the GUI.
Below the "Deinterlacer quality (single rate)" option are two lines
"Prefer OpenGL deinterlacers" and "Prefer driver deinterlacers".
These two lines are skipped over when "None" is the desired quality.
This makes sense after a few moments but initially it surprised me.
It would be great if it was possible to grey-out the not-applicable
options, as was recommended in the OSF-Motif style guide of the
previous century.
N.B. I do not know how to do that or if it is even possible in the
MythTV GUI. If I knew I would also use that in mythtv-setup.
Hope that this is what was requested,
Klaas.
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