Thumbnail preview is over-exposed

[ApolloBian]

The thumbnail generated is over-exposed, as shown in the screenshot below: I'm running on windows 11, my configs:

# https://github.com/TheAMM/mpv_thumbnail_script#configuration
autogenerate=yes
autogenerate_max_duration=10800
mpv_no_sub=yes
thumbnail_width=200
thumbnail_height=200
thumbnail_count=150
thumbnail_network=yes
remote_thumbnail_count=150
prefer_mpv=yes

[Tokariew]

should work correctly for SDR content, HDR lack tonemapping support