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| author | nand <nand@lavabit.com> | 2012-12-23 19:49:19 +0100 |
|---|---|---|
| committer | wm4 <wm4@nowhere> | 2012-12-28 13:43:24 +0100 |
| commit | b32f2ef0d344e224a24ed72bf7abf394675ea58f (patch) | |
| tree | a17fed17382267c33866cbaab72d51a5308b4017 /DOCS | |
| parent | 6be50fa7736e0095ace5cb1b6e8da35aaa5e52df (diff) | |
| download | mpv-b32f2ef0d344e224a24ed72bf7abf394675ea58f.tar.bz2 mpv-b32f2ef0d344e224a24ed72bf7abf394675ea58f.tar.xz | |
vo_opengl: use more precise gamma for BT.709 with color management
Change from gamma 2.2 to the slightly more precise 1/0.45 as per BT.709.
https://www.itu.int/rec/R-REC-BT.709-5-200204-I/en mentions a value of
γ=0.45 for the conceptual non-linear precorrection of video signals.
This is approximately the inverse of 2.22, and not 2.20 as the code had
been using until now.
Diffstat (limited to 'DOCS')
| -rw-r--r-- | DOCS/man/en/vo.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/DOCS/man/en/vo.rst b/DOCS/man/en/vo.rst index cf92d97efa..941a7a7283 100644 --- a/DOCS/man/en/vo.rst +++ b/DOCS/man/en/vo.rst @@ -325,8 +325,8 @@ opengl Enable gamma-correct scaling by working in linear light. This makes use of sRGB textures and framebuffers. This option forces the options 'indirect' and 'gamma'. - NOTE: for YUV colorspaces, gamma 2.2 is assumed. RGB input is always - assumed to be in sRGB. + NOTE: for YUV colorspaces, gamma 1/0.45 (2.222) is assumed. RGB input + is always assumed to be in sRGB. This option is not really useful, as gamma-correct scaling has not much influence on typical video playback. Most visible effect comes from slightly different gamma. |