From 701c8c8254c22b2def38515a1d09dcdd94fea3d3 Mon Sep 17 00:00:00 2001 From: Niklas Haas Date: Mon, 24 Feb 2014 13:39:39 +0100 Subject: vo_opengl: Add :icc-approx-gamma suboption to approximate BT.709 gamma This uses the value of 1.95 as an approximation for the exact gamma curve, which replicates the behavior of popular video software including anything in the Apple ecosystem, as per issue #534. --- DOCS/man/en/vo.rst | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'DOCS') diff --git a/DOCS/man/en/vo.rst b/DOCS/man/en/vo.rst index 8c3f1ba030..9e74cc9f3d 100644 --- a/DOCS/man/en/vo.rst +++ b/DOCS/man/en/vo.rst @@ -462,6 +462,14 @@ Available video output drivers are: 3 absolute colorimetric (default) + ``icc-approx-gamma`` + Approximate the actual BT.709 gamma function as a pure power curve of + 1.95. This is not quite correct, but it was historically used as a + faster version of the actual function, and seems to still be used by + many video editing programs and perhaps even studios. If you find your + videos displaying ever so slightly slightly brighter than you'd expect + them to, try enabling this option. + ``3dlut-size=xx`` Size of the 3D LUT generated from the ICC profile in each dimension. Default is 128x256x64. -- cgit v1.2.3