HDR or any color-space pass-through should be opt-in, as we cannot
control the user's compositor or display. Allowing HDR signals to be
pushed by default may lead to surprising results for some users.
Additionally, for an optimal experience, this option should be paired
with the target-peak of the display.
Make the pass-through opt-in and let the user decide if they want or
need it. By default, mpv should render a safe and consistent sRGB
output. mpv's tone mapping is generally of higher quality than any
external solution.
This reverts commit 23843b4aa5.
f14660b446