`hwdec=vaapi` not working with `vo=dmabuf-wayland` on my system #16223

morialo3 · 2025-04-10T18:00:58Z

mpv Information

mpv v0.40.0-dirty Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
 built on Apr  4 2025 07:28:54
libplacebo version: v7.349.0
FFmpeg version: n7.1
FFmpeg library versions:
   libavcodec      61.19.100
   libavdevice     61.3.100
   libavfilter     10.4.100
   libavformat     61.7.100
   libavutil       59.39.100
   libswresample   5.3.100
   libswscale      8.3.100

Other Information

- Linux version:`"Arch Linux"`
- Kernel Version:`Linux Korialo-Arch 6.14.1-273-tkg-eevdf #1 SMP PREEMPT_DYNAMIC TKG Wed, 09 Apr 2025 09:49:46 +0000 x86_64 GNU/Linux`
- GPU Model:`00:02.0 VGA compatible controller [0300]: Intel Corporation CometLake-H GT2 [UHD Graphics] [8086:9bc4] (rev 05)`
- Mesa/GPU Driver Version:`OpenGL version string: 4.6 (Compatibility Profile) Mesa 25.0.3-arch1.1`
- Window Manager and Version:`Hyprland 0.48.1 built from branch  at commit 29e2e59fdbab8ed2cc23a20e3c6043d5decb5cdc  (version: bump to v0.48.1).`
- Source of mpv:`pacman`
- Latest known working version:`v0.39`
- Issue started after the following happened:`update`

Reproduction Steps

No hardware acceleration happens, throws error, and video plays.

 mpv --no-config --vo=dmabuf-wayland --hwdec=vaapi  'https://www.twitch.tv/videos/2314819556?collection=bL1PZGrMDBgM6Q'

Hardware accelerated(?), no errors, video plays normally.

 mpv --no-config --vo=dmabuf-wayland --hwdec=vaapi  --vf=format=fmt=nv12 'https://www.twitch.tv/videos/2314819556?collection=bL1PZGrMDBgM6Q'

Expected Behavior

vaapi should work without this workaround --vf=format=fmt=nv12

Actual Behavior

No hardware acceleration.

Log File

Case - 1 Debug without workaround

test_1.log

Case - 2 Debug with the workaround

test_2.log

Sample Files

No response

I carefully read all instruction and confirm that I did the following:

I tested with the latest mpv version to validate that the issue is not already fixed.
I provided all required information including system and mpv version.
I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
I attached the full, untruncated log file.
I attached the backtrace in the case of a crash.

The text was updated successfully, but these errors were encountered:

guidocella · 2025-04-10T18:06:54Z

Try --gpu-api=opengl

Dudemanguy · 2025-04-10T18:08:39Z

[vo/dmabuf-wayland/vaapi] Mapped surface with format nv12; drm format 'NV12(0100000000000002)' is not supported by compositor and GPU combination.

The compositor doesn't support nv12. So we have to autoconvert the format.

[vd] Using hardware decoding (vaapi).

hwdec looks like it's working to me though.

What's the actual problem? In the log, I see this gets spammed.

delaying audio start 393.057000 vs. 333.499000, diff=59.558000

Shouldn't have anything to do with hwdec though should just be the stream.

kasper93 · 2025-04-10T18:19:12Z

Try --gpu-api=opengl

gpu-api is not used in vo=dmabuf-wayland

morialo3 · 2025-04-10T18:26:54Z

The compositor doesn't support nv12. So we have to autoconvert the format.

That's true but looks like my gpu not happy with bgr0

[   2.862][e][ffmpeg] filter: Hardware does not support output format bgr0.

hwdec looks like it's working to me though.

I checked with intel_gpu_top , no hardware acceleration, without me adding --vf=format=fmt=nv12

morialo3 · 2025-04-10T18:43:48Z

Interestingly enough I have a 4k HEVC sample video that works perfectly fine:

 mpv --no-config --vo=dmabuf-wayland --hwdec=vaapi --gpu-debug --log-file=test_3.log Downloads/4K\ HEVC\ 59.940\ Broadcast\ Capture\ Sample.mkv

Log

test_3.log

Sample

Dudemanguy · 2025-04-10T18:52:18Z

I checked with intel_gpu_top , no hardware acceleration, without me adding --vf=format=fmt=nv12

This does a conversion via software first. bgr0 not working for you would just be a hardware limitation most likely.

Interestingly enough I have a 4k HEVC sample video that works perfectly fine:

That's a totally different format.

morialo3 · 2025-04-10T18:59:02Z

This does a conversion via software first. bgr0 not working for you would just be a hardware limitation most likely.

Used to work with v0.39 before though. you can close this issue if you think it is user-end issue.

Dudemanguy · 2025-04-10T19:03:02Z

Did v0.39 pick bgr0 for that file?

kasper93 · 2025-04-10T19:22:37Z

[   3.074][v][hwupload] Hardware conversion: scale_vaapi (nv12 -> bgr0)
[   3.074][i][autoconvert] Converting vaapi[nv12] -> vaapi[bgr0]
[   3.074][d][ffmpeg] mpv_src_default_in: w:1920 h:1080 pixfmt:vaapi tb:1/1000000 fr:60/1 sar:1/1 csp:bt709 range:tv
[   3.074][v][lavfi] Configuring hwdec_interop=vaapi for filter graph: scale_vaapi
[   3.074][e][ffmpeg] filter: Hardware does not support output format bgr0.
[   3.074][e][ffmpeg] filter: Failed to configure output pad on filter
[   3.074][f][lavfi] failed to configure the filter graph
[   3.074][f][vf] Cannot convert decoder/filter output to any format supported by the output.

I don't think it we constrain our format selection based on conversion capabilities. So this will fallback to software decoding.

But since only supported formats are rgb once, I doubt if we add logic to fallback to other one it would help in this case.

[   3.057][d][vo/dmabuf-wayland/vaapi] Supported formats:
[   3.057][d][vo/dmabuf-wayland/vaapi]  bgra
[   3.057][d][vo/dmabuf-wayland/vaapi]  bgr0
[   3.057][d][vo/dmabuf-wayland/vaapi]  rgb0
[   3.057][d][vo/dmabuf-wayland/vaapi]  rgb30

Possibly we could fallback to cpu conversion, but this require hwdownload and hwupload. Could you share 0.39.0 log? What it was doing?

morialo3 · 2025-04-10T19:22:44Z

Did v0.39 pick bgr0 for that file?

No

[   3.551][v][hwupload] Hardware conversion: scale_vaapi -> rgb0
[   3.551][i][autoconvert] Converting vaapi[nv12] -> vaapi[rgb0]

Downgraded to v0.39 from https://archive.archlinux.org/packages/m/mpv/mpv-1%3A0.39.0-5-x86_64.pkg.tar.zst
Same commands

mpv --no-config --vo=dmabuf-wayland --hwdec=vaapi --gpu-debug --log-file=test_4.log 'https://www.twitch.tv/videos/2314819556?collection=bL1PZGrMDBgM6Q'

Log

test_4.log

No issues in this case, maybe I should've bisected this release before opening this issue, my mistake.

morialo3 · 2025-04-10T19:24:09Z

But since only supported formats are rgb once, I doubt if we add logic to fallback to other one it would help in this case.

Exactly @kasper93 .

kasper93 · 2025-04-10T19:29:44Z

Hmm, look like vaapi[nv12] -> vaapi[rgb0] conversion works for you, while vaapi[nv12] -> vaapi[bgr0] doesn't. So this should be fixable. I don't recall that we had the constraints checks there before, so it kinda random breakage.

morialo3 · 2025-04-10T19:33:47Z

Thanks @kasper93

Dudemanguy · 2025-04-10T19:46:19Z

We did change some format selection stuff (should have been all fixes) in between releases but I'm not sure why you would go from picking rgb0 to bgr0. If anything, it should have been picking bgr0 before.

kasper93 · 2025-04-10T20:02:01Z

@morialo3 Could you share log of mpv --no-config --vo=dmabuf-wayland --hwdec=no --vf=format=fmt=bgr0 works for you?

morialo3 · 2025-04-10T20:04:21Z

@morialo3 Could you share log of mpv --no-config --vo=dmabuf-wayland --hwdec=no --vf=format=fmt=bgr0 works for you?

Here:

mpv --no-config --vo=dmabuf-wayland --hwdec=no --vf=format=fmt=bgr0 --log-file=test_5.log 'https://www.twitch.tv/videos/2314819556?collection=bL1PZGrMDBgM6Q'

Log mpv v0.39.0:

test_5.log

Log mpv v0.40.0:

test_6.log

morialo3 added the os:linux label Apr 10, 2025

morialo3 changed the title ~~hwdec=vaapi not working with vo=dmabuf-wayland no my system~~ hwdec=vaapi not working with vo=dmabuf-wayland on my system Apr 10, 2025

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`hwdec=vaapi` not working with `vo=dmabuf-wayland` on my system #16223

`hwdec=vaapi` not working with `vo=dmabuf-wayland` on my system #16223

morialo3 commented Apr 10, 2025

guidocella commented Apr 10, 2025

Dudemanguy commented Apr 10, 2025

kasper93 commented Apr 10, 2025

morialo3 commented Apr 10, 2025

morialo3 commented Apr 10, 2025

Dudemanguy commented Apr 10, 2025 •

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Dudemanguy commented Apr 10, 2025

kasper93 commented Apr 10, 2025

morialo3 commented Apr 10, 2025

morialo3 commented Apr 10, 2025 •

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kasper93 commented Apr 10, 2025

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Dudemanguy commented Apr 10, 2025

kasper93 commented Apr 10, 2025

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hwdec=vaapi not working with vo=dmabuf-wayland on my system #16223

hwdec=vaapi not working with vo=dmabuf-wayland on my system #16223

Comments

morialo3 commented Apr 10, 2025

mpv Information

Other Information

Reproduction Steps

Expected Behavior

Actual Behavior

Log File

Sample Files

I carefully read all instruction and confirm that I did the following:

guidocella commented Apr 10, 2025

Dudemanguy commented Apr 10, 2025

kasper93 commented Apr 10, 2025

morialo3 commented Apr 10, 2025

morialo3 commented Apr 10, 2025

Dudemanguy commented Apr 10, 2025 • edited Loading

morialo3 commented Apr 10, 2025 • edited Loading

Dudemanguy commented Apr 10, 2025

kasper93 commented Apr 10, 2025

morialo3 commented Apr 10, 2025

morialo3 commented Apr 10, 2025 • edited Loading

kasper93 commented Apr 10, 2025

morialo3 commented Apr 10, 2025 • edited Loading

Dudemanguy commented Apr 10, 2025

kasper93 commented Apr 10, 2025

morialo3 commented Apr 10, 2025 • edited Loading

`hwdec=vaapi` not working with `vo=dmabuf-wayland` on my system #16223

`hwdec=vaapi` not working with `vo=dmabuf-wayland` on my system #16223

Dudemanguy commented Apr 10, 2025 •

edited

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morialo3 commented Apr 10, 2025 •

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morialo3 commented Apr 10, 2025 •

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morialo3 commented Apr 10, 2025 •

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morialo3 commented Apr 10, 2025 •

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