Green Screen: HEVC 12bit intel i915 archlinux

[johnea]

Hello,

I'm able to play most x265 format videos, except it seems, the 12bit color depth.

These HEVC "Tears of Steel" and jellyfish 10bit demo samples play correctly:
http://trailers.divx.com/hevc/TearsOfSt ... 5_HM11.mkv
http://jell.yfish.us/media/jellyfish-3- ... -10bit.mkv

Sorry, I couldn't find any online 12bit sample to test (outside of bittorrent).

The HEVC 12bit media does play correctly with the smplayer on the same computer, however with vlc I get audio and a mostly green screen with shifting artifacts.

I know there have been previous issues with the arch build, if someone can confirm that this is an arch build problem I will try to address it through the arch forums.

Thank you very much for your help...

johnea

[johnea]

Maybe I can ask the question a better way:

Can VLC 2.2.2 properly render HEVC2 (x265) 12bit video?

If anyone can confirm that vlc 2.2.2 is properly rendering this format, then it must be a build issue.

Thanks again...

[Rémi Denis-Courmont]

In principles, yes. In practice, the performance is very unlikely to be good enough.

[johnea]

Thank you Remi.

So maybe my problem is that the machine just doesn't have the performance needed to render this format.

Maybe I'll just setup a script to transcode this stuff into something more simple...

[Zeek0]

VLC plays 8bit or 10bit HEVC (4:2:0 or 4:4:4) ok. VLC can't play 12bit HEVC 4:2:0 or 12bit HEVC 4:4:4 at the moment - you get a green screen.
Other players can play 12bit HEVC 4:2:0 but as far as I know nothing can play 12bit HEVC 4:4:4 at the moment.

[Jean-Baptiste Kempf]

Please share samples.

[Zeek0]

Here's some test files including a readme.txt
http://bit.ly/1NxTIUy

VLC 2.2.4 fails on 12bit HEVC files (both 4:2:0 and 4:4:4).
mplayer (and derivative players like smplayer, mpv and umplayer) and kodi play all the files.
MPC-HC + LAV fails with the 12bit HEVC 4:4:4 file but plays everything else ok.
PowerDVD15 only plays 8bit and 10bit 4:2:0 - it doesn't like 4:4:4 or 12bit. I haven't tested PowerDVD16.
I didn't test 4:2:2 mode. In the past 10bit x264 4:2:2 mode created the largest filesize compared to 4:2:0 and 4:4:4 so it's not worth the bother.

It's the same problem as this one:
https://forum.videolan.org/viewtopic.php?f=2&t=134178

[Jean-Baptiste Kempf]

All of them are fixed in 3.0.0. If you share a 4:2:2 12 bits, I will map it too.

[Zeek0]

4:2:2 files added and updated readme2.txt
http://bit.ly/1NxTIUy

VLC 2.2.4 can't play 12bit HEVC 4:2:2 - smplayer can't play 12bit HEVC 4:2:2 either but can play everything else.
10bit HEVC 4:2:2 plays ok with both players.
MPC-HC+LAV and Kodi play both 10bit and 12bit HEVC 4:2:2 files ok.

[Jean-Baptiste Kempf]

4:2:2 files added and updated readme2.txt
http://bit.ly/1NxTIUy

VLC 2.2.4 can't play 12bit HEVC 4:2:2 - smplayer can't play 12bit HEVC 4:2:2 either but can play everything else.
10bit HEVC 4:2:2 plays ok with both players.
MPC-HC+LAV and Kodi play both 10bit and 12bit HEVC 4:2:2 files ok.

And fixed in 3.0.0 too

Anything else?

[Zeek0]

mpv has just had an update - it now plays 12bit HEVC 4:2:2 ok.
Not that anyone would use that mode.

[gophercg]

Tried vlc 3.0.0 nightly: sound works, no video (vlc icon on black). https://nightlies.videolan.org/build/wi ... 1216-0441/
VLC 2.2.4 was slightly better, had sound, subtitles when paused (vanishes when playing), constant green.
MPC-hc plays the files.

Samples: search any torrents HEVC2, or (1280x720 HEVC2 AAC).
Most files I think said hevc2 H.265, 4:2:0 in mpc.