From db0fb3c48b12f09170231fccd2c91687d9ce21db Mon Sep 17 00:00:00 2001 From: Niklas Haas Date: Tue, 19 Sep 2017 06:35:24 +0200 Subject: vo_gpu: fix gamma scale This never really made sense since the BT.1886 changes. It should get *brighter* for bright rooms, not darker for dark rooms. Picked some new values that seemed reasonable-ish. --- DOCS/man/options.rst | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'DOCS/man') diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst index b4416ec34d..b08150c6bb 100644 --- a/DOCS/man/options.rst +++ b/DOCS/man/options.rst @@ -4649,22 +4649,22 @@ The following video options are currently all specific to ``--vo=gpu`` and Recommended values based on the environmental brightness: 1.0 - Brightly illuminated (default) - 0.9 - Slightly dim - 0.8 - Pitch black room + Pitch black or dimly lit room (default) + 1.1 + Moderately lit room, home + 1.2 + Brightly illuminated room, office - NOTE: Typical movie content (Blu-ray etc.) already contains a gamma drop of - about 0.8, so specifying it here as well will result in even darker - image than intended! + NOTE: This is based around the assumptions of typical movie content, which + contains an implicit end-to-end of about 0.8 from scene to display. For + bright environments it can be useful to cancel that out. ``--gamma-auto`` Automatically corrects the gamma value depending on ambient lighting - conditions (adding a gamma boost for dark rooms). + conditions (adding a gamma boost for bright rooms). - With ambient illuminance of 64lux, mpv will pick the 1.0 gamma value (no - boost), and slightly increase the boost up until 0.8 for 16lux. + With ambient illuminance of 16 lux, mpv will pick the 1.0 gamma value (no + boost), and slightly increase the boost up until 1.2 for 256 lux. NOTE: Only implemented on OS X. -- cgit v1.2.3