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Diffstat (limited to 'DOCS/man/en')
| -rw-r--r-- | DOCS/man/en/vo.rst | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/DOCS/man/en/vo.rst b/DOCS/man/en/vo.rst index 44b6e05723..4e4e08ee80 100644 --- a/DOCS/man/en/vo.rst +++ b/DOCS/man/en/vo.rst @@ -317,18 +317,14 @@ Available video output drivers are: by very few OpenGL cards. ``srgb`` - 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``. + Convert and color correct the output to sRGB before displaying it on + the screen. This option enables linear light scaling. It also forces + the options ``indirect`` and ``gamma``. - .. 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. + This option is equivalent to using ``icc-profile`` with an sRGB ICC + profile, but it is implemented without a 3DLUT and does not require + LittleCMS 2. If both ``srgb`` and ``icc-profile`` are present, the + latter takes precedence, as they are somewhat redundant. ``pbo`` Enable use of PBOs. This is slightly faster, but can sometimes lead to @@ -449,7 +445,9 @@ Available video output drivers are: ``icc-profile=<file>`` Load an ICC profile and use it to transform linear RGB to screen output. - Needs LittleCMS2 support compiled in. + Needs LittleCMS2 support compiled in. This option overrides the ``srgb`` + property, as using both is somewhat redundant. It also enables linear + light scaling. ``icc-cache=<file>`` Store and load the 3D LUT created from the ICC profile in this file. @@ -467,7 +465,7 @@ Available video output drivers are: 3 absolute colorimetric - ``icc-approx-gamma`` + ``approx-gamma`` Approximate the actual BT.709 gamma function as a pure power curve of 1.95. A number of video editing programs and studios apparently use this for mastering instead of the true curve. Most notably, anything in the @@ -475,6 +473,8 @@ Available video output drivers are: compatible with it. It's a sound idea to try enabling this flag first when watching movies and shows to see if things look better that way. + This only affects the output when using either ``icc-profile`` or``srgb``. + ``3dlut-size=<r>x<g>x<b>`` Size of the 3D LUT generated from the ICC profile in each dimension. Default is 128x256x64. |