10 bit AV1 decoder missing in kernel?

[OttawaHacker]

I have edge kernel installed and working. I compiled the v4l2 ffmpeg but some of my av1 videos are not working. After some digging I noticed that

 

v4l2-ctl --device=/dev/video4 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture Multiplanar

        [0]: 'VT12' (Y/UV 4:2:0 (4x4 Linear))
        [1]: 'NV12' (Y/UV 4:2:0)

 

Shouldn't this include the 10 bit formats as well? (NV15?)

Does anyone know why the 10 bit format is missing in the kernel? Is this specific to the orange pi? 

 

I found this GitHub - dongioia/rock5bplus-rkvdec2: Rock 5B+ (RK3588) on mainline Linux 7.1: V4L2 stateless RKVDEC2/Hantro hardware video decode (VP9 / H.264 / HEVC / AV1) up to 4K, plus a guide for stock Chromium 150 with clean in-browser HW decode (VP9 Mali green artifact fixed upstream in the Chromium 150 ANGLE roll). HDMI 2.0 4K@60Hz, on Beryllium OS. · GitHub

Going to test their patches, I am unsure if they are related to the issue but they list a 10 bit VP9.

Edited August 4 by OttawaHacker

[eselarm]

I was curios and see on https://gitlab.collabora.com/hardware-enablement/rockchip-3588/notes-for-rockchip-3588/-/blob/main/mainline-status.md

 

HDMI high color depth support (6.19-rc1): PATCHv3

 

Haven't read more, but it is a patch, not merged (yet) in mainline tree. Applies to all RK3588 based platforms, like my NanoPi-R6C, sometimes start it with different/own kernel build, but not done any local patches.

There is also LibreELEC, it has various (floating around) patches applied to mainline AFAIR. But Armbian is not a dedicated videoplayer platform, so depends on what you want. 

Edited August 5 by eselarm
fix typos

[robertoj]

Which Linux version are you using? Did you use the CMA=256M kernel argument? There's a lot of information here.

 

 

[ArmBoy1988]

i'm not sure if this has any relevance to this thread as it's for Kodi, but at the bottom of this thread, there is reference to a Kodi 22 Piers Beta 1:

 

https://forum.kodi.tv/showthread.php?tid=379167

 

Changelog for Kodi 22 Piers Beta 1:

 

https://kodi.tv/article/kodi-22-piers-beta-1/

 

Couple of points:

• Upgraded to FFmpeg 8.1.2 (this is for internal version Kodi is compiled with/against)
• The whole "Embedded Linux (DRM, GBM, and GLES)" section.  Some items:

  • Brings GLES to feature parity with GL

  • Added YUV 4:2:2 and 4:4:4 support

  • Added VAAPI hardware decoding of HEVC 4:2:2 and 4:4:4 (GLES-only)

  • Expanded hardware support, especially for ARM devices

Sorry if it's not relevant.