Pausing causes extreme brightness when using ICC profile

[AndreiVernon]

mpv Information

mpv v0.41.0-566-g0a0c63d3e Copyright © 2000-2026 mpv/MPlayer/mplayer2 projects
 built on Apr 29 2026 10:10:17
libplacebo version: v7.363.0 (v7.360.0-33-g27aa71a-dirty)
FFmpeg version: N-124254-g397c7c752
FFmpeg library versions:
   libavcodec      62.30.100
   libavdevice     62.4.100
   libavfilter     11.17.100
   libavformat     62.13.102
   libavutil       60.30.100
   libswresample   6.4.100
   libswscale      9.7.100

Other Information

- Windows version: Microsoft Windows [Version 10.0.26200.8246]
- GPU model, driver and version: AMD Radeon Graphics
- Source of mpv: zhongfly mpv-x86_64-v3-20260429-git-0a0c63d3e9
- Latest known working version: zhongfly mpv-x86_64-v3-20260427-git-05b327c723
- Issue started after the following happened: After updating

Reproduction Steps

The issue only occurs when --icc-profile-auto=yes. --no-config with --icc-profile-auto=yes will also trigger it. Issue happens when paused or randomly during playback.

Expected Behavior

No random flashing or brightened screen.

Actual Behavior

When paused, the image will be super bright. During playback, random flashes of brightness will occur.

When I use screenshot window in mpv though, it outputs a normal looking image.

Log File

flashing.txt
This log file involves opening a file, pausing the video and triggering the issue, then quitting.

Sample Files

Should apply to any video file

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

• I tested and confirmed that the issue exists with the latest release version or newer.
• 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.

[kasper93]

Will be fixed by https://code.videolan.org/videolan/libplacebo/-/merge_requests/829, but we have to discuss the exact solution, if better ideas are available.

[vslmc]

Interestingly, I'm now experiencing this exact same issue, though I didn't before. (I'm using an ICC.)
The last working commit was git-8cc65c838e, and the problem started after git-2f58ee36ce. (mpv build by zhongfl)

I've attached the debug logs for both versions.:

debug_2f58ee36ce.log
debug_8cc65c838e.log