diff options
| -rw-r--r-- | DOCS/man/vf.rst | 2 | ||||
| -rw-r--r-- | DOCS/man/vo.rst | 16 |
2 files changed, 12 insertions, 6 deletions
diff --git a/DOCS/man/vf.rst b/DOCS/man/vf.rst index faca4114a9..46384eb20f 100644 --- a/DOCS/man/vf.rst +++ b/DOCS/man/vf.rst @@ -303,7 +303,7 @@ Available filters are: Available gamma functions are: :auto: automatic selection (default) - :bt.1886: ITU-R BT.1886 (approximation of BT.601/BT.709/BT.2020 curve) + :bt.1886: ITU-R BT.1886 (EOTF corresponding to BT.601/BT.709/BT.2020) :srgb: IEC 61966-2-4 (sRGB) :linear: Linear light :gamma1.8: Pure power curve (gamma 1.8) diff --git a/DOCS/man/vo.rst b/DOCS/man/vo.rst index 0e091591e2..647dd8c1a4 100644 --- a/DOCS/man/vo.rst +++ b/DOCS/man/vo.rst @@ -855,6 +855,10 @@ Available video output drivers are: 0.8 Pitch black room + 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 + even darker image than intended! + ``gamma-auto`` Automatically corrects the gamma value depending on ambient lighting conditions (adding a gamma boost for dark rooms). @@ -865,8 +869,9 @@ Available video output drivers are: NOTE: Only implemented on OS X. ``target-prim=<value>`` - Specifies the primaries of the display. Video colors will be adapted - to this colorspace if necessary. Valid values are: + Specifies the primaries of the display. Video colors will be adapted to + this colorspace when ICC color management is not being used. Valid + values are: auto Disable any adaptation (default) @@ -893,12 +898,13 @@ Available video output drivers are: ``target-trc=<value>`` Specifies the transfer characteristics (gamma) of the display. Video - colors will be adjusted to this curve. Valid values are: + colors will be adjusted to this curve when ICC color management is + not being used. Valid values are: auto Disable any adaptation (default) bt.1886 - ITU-R BT.1886 curve, without the brightness drop (approx. 1.961) + ITU-R BT.1886 curve (assuming infinite contrast) srgb IEC 61966-2-4 (sRGB) linear @@ -913,7 +919,7 @@ Available video output drivers are: ProPhoto RGB (ROMM) ``icc-profile=<file>`` - Load an ICC profile and use it to transform linear RGB to screen output. + Load an ICC profile and use it to transform video RGB to screen output. Needs LittleCMS 2 support compiled in. This option overrides the ``target-prim``, ``target-trc`` and ``icc-profile-auto`` options. |