mpv vo_gpu_next: add an option to control bitmap subtitles peak for HDR

vo_gpu_next: add an option to control bitmap subtitles peak for HDR

Open dyphire opened this issue 6 months ago • 2 comments

Users may want darker subtitle brightness for HDR viewing

Don't apply it for video screenshots

Closed https://github.com/mpv-player/mpv/issues/13680

I initially wanted to add an option to customize the brightness of the image subtitles for HDR output, but after testing found that any value other than 0 ended up rendering as 203.

Text subtitles don't seem to be able to specify output brightness, perhaps others know how to do this

Edit: Maybe it should be disabled by default to mimic the behavior of other players?

Jun 05 '25 14:06 dyphire

Here are a couple of screenshots to explain what the new options do:

[!NOTE] All screenshots are in HDR pass-through.

mpv: git-master with --vo=gpu-next --target-colorspace-hint=auto 2025-06-05 212200 mpv: this pr with --vo=gpu-next --target-colorspace-hint=auto --image-subs-hdr-peak=no 2025-06-05 212118 mpc-be: 2025-06-05 212030 Windows Media Player (Windows 11 24H2) 屏幕截图 2025-06-05 212951 Please ignore its subtitle color issue and just look at the subtitle brightness