diff options
Diffstat (limited to 'DOCS/man/options.rst')
| -rw-r--r-- | DOCS/man/options.rst | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst index c8af27bcb7..76f39dc29f 100644 --- a/DOCS/man/options.rst +++ b/DOCS/man/options.rst @@ -3833,6 +3833,21 @@ Software Scaler ``--sws-cvs=<v>`` Software scaler chroma vertical shifting. See ``--sws-scaler``. +``--sws-bitexact=<yes|no>`` + Unknown functionality (default: no). Consult libswscale source code. The + primary purpose of this, as far as libswscale API goes), is to produce + exactly the same output for the same input on all platforms (output has the + same "bits" everywhere, thus "bitexact"). Typically disables optimizations. + +``--sws-fast=<yes|no>`` + Allow optimizations that help with performance, but reduce quality (default: + no). + + VOs like ``drm`` and ``x11`` will benefit a lot from using ``--sws-fast``. + You may need to set other options, like ``--sws-scaler``. The builtin + ``sws-fast`` profile sets this option and some others to gain performance + for reduced quality. + ``--sws-allow-zimg=<yes|no>`` Allow using zimg (if the component using the internal swscale wrapper explicitly allows so). In this case, zimg *may* be used, if the internal @@ -3846,14 +3861,34 @@ Software Scaler correctly, a verbose priority log message will indicate whether zimg is being used. - Currently, barely anything uses this. + Most things which need software conversion can make use of this. -``--zimg--scaler=<point|bilinear|bicubic|spline16|lanczos>`` +``--zimg--scaler=<point|bilinear|bicubic|spline16|spline36|lanczos>`` Zimg luma scaler to use (default: bilinear). +``--zimg-scaler-param-a=<default|float>``, ``--zimg-scaler-param-b=<default|float>`` + Set scaler parameters. By default, these are set to the special string + ``default``, which maps to a scaler-specific default value. Ignored if the + scaler is not tunable. + + ``lanczos`` + ``--zimg-scaler-param-a`` is the number of taps. + + ``bicubic`` + a and b are the bicubic b and c parameters. + +``--zimg-scaler-chroma=...`` + Same as ``--zimg--scaler``, for for chroma interpolation. + +``--zimg-scaler-chroma-param-a``, ``--zimg-scaler-chroma-param-b`` + Same as ``--zimg-scaler-param-a`` / ``--zimg-scaler-param-b``, for chroma. + +``--zimg-dither=<no|ordered|random|error-diffusion>`` + Dithering (default: random). + ``--zimg-fast=<yes|no>`` Allow optimizations that help with performance, but reduce quality (default: - yes). Currently, this may simplify gamma conversion operations. + no). Currently, this may simplify gamma conversion operations. Audio Resampler |