Activation of autocrop changes video color

[jeisom]

mpv Information

mpv v0.40.0-462-ge6885cb92 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
 built on Nov 19 2025 22:47:02
libplacebo version: v7.351.0
FFmpeg version: n8.0
FFmpeg library versions:
   libavcodec      62.11.100
   libavdevice     62.1.100
   libavfilter     11.4.100
   libavformat     62.3.100
   libavutil       60.8.100
   libswresample   6.1.100
   libswscale      9.1.100

Other Information

Operating System: Arch Linux 
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.0
Kernel Version: 6.17.7-273-linux-tkg (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 64 GiB of RAM (62.7 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 4080
Product Name: X570M Pro4

mpv from aur mpv-git package

Reproduction Steps

I was testing with the autocrop script. I opened an hdr movie twice and immediately paused and scrubbed to a frame in both and autocropped one. Place both side-by-side so each had half screen. The autocropped one darkened. I assume, but don't know, that hdr disabled on activation.

Manual cropping does not reproduce this.

Expected Behavior

Color/image to remain the same.

Actual Behavior

Color/Image darked

Log File

output.txt

Sample Files

No response

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

• [x] I tested with the latest mpv version to validate that the issue is not already fixed.
• [x] I provided all required information including system and mpv version.
• [x] 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.
• [x] I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• [x] I attached the full, untruncated log file.
• [x] I attached the backtrace in the case of a crash.