Look for "HDMI black level" or something similar in your TV's settings.
Posts by smp
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I can reproduce this with AV1 10-bit video. Probably some issue with Intel media-driver and/or ffmpeg.
As a workaround you can disable AV1 hardware decoding (Player -> Use AV1 VAAPI -> off).
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lrusak hasn't updated his HDR repo for a long time, so no new builds.
Some of his HDR work was merged in Kodi, so it partially works in official builds.
Only HEVC 24p HDR10 videos seem to work for now.
What does not work (TV does not switch to HDR mode): VP9 HDR videos, HLG videos, any 50/60 fps HDR videos.
Also, Kodi require an extra patch that allows the TVs to switch to BT2020 colorimetry mode. This is not yet merged in Kodi.
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This build include the BT2020 patch. What does it say if you play 4K HDR file at 60Hz?
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Why would you want it to boot from an SD card? Why not boot from USB and install to internal eMMC?
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HDR requires HDMI 2.0 or DP 1.4. This board has neither.
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What motherboard?
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That image was intended for Noumenon for troubleshooting his projector issue with his NUC11. The reason for tigerlake optimization flag is that I use it in my personal builds and I don't really have time to do a clean build with default gcc optimization flags.
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It should boot on NUC11. It boots fine on my Tiger Lake box.
The image was built with -march=tigerlake gcc flag. It would probably be unbootable on non-tigerlake CPUs.
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is there a way to force YCbCr 4:4:4 output?
This image will use YCbCr 4:4:4.
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What's the point? YCbCr 4:4:4 is the same as RGB
Diff
Display Morediff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 821411b..557bd91 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -2423,7 +2423,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder, if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) return -EINVAL; - pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; + pipe_config->output_format = INTEL_OUTPUT_FORMAT_YCBCR444; pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_hdmi, conn_state); -
Yes, but 4:2:0 is still only at 8-bit.
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From JVC NX5 manual:
When the color space is RGB/YCbCr(4:4:4), only 8-bit input is supported.
^ There's your answer. You will have to use 8-bit for 4k/24Hz.
systemctl stop kodi
./proptest -M i915 -D /dev/dri/card0 308 connector 314 8
systemctl start kodi
try if 4K/24 now works
Upd: the manual actually refers to 4K 50/60Hz modes, so deep color should be supported with 4K/24. Try also 10-bit (./proptest -M i915 -D /dev/dri/card0 308 connector 314 10)
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It seems that 4k23.98hz files won’t output video.
My best guess is that your projector does not like the 4K RGB 12-bit mode.
Try to reduce it to 10-bit. You can do that with libdrm proptest tool.
Copy proptest to /storage, then
chmod 755 proptest
./proptest
and post the output here
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24hz 4:2:2 is supported though?
No. RGB 12-bit.
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RGB 8bit,
On Intel hardware 4K 50/60Hz HDMI video modes will always be RGB 8-bit because Intel driver does not support YCbCr 4:2:2. Some type of dithering would be required.
the colorimetry is labelled sRGB instead of bt2020
Wrong colorimetry issue was discussed a few posts back. BT.2020 works with this unmerged PR. It will not be included in Kodi 20/LE 11.
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This is needed for BT2020. It's not merged yet.
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It should work. Try older nightlies, maybe something is broken for Jasper Lake in current Mesa 3D.
