[FFmpeg-devel] [PATCH 2/4] doc/encoders: add libx264rgb doc and supported pixfmts for libx264(rgb)

Stefano Sabatini stefasab at gmail.com
Sun Jan 5 19:42:06 CET 2014


On date Saturday 2014-01-04 19:24:30 -0800, Timothy Gu encoded:
> Signed-off-by: Timothy Gu <timothygu99 at gmail.com>
> ---
> Not sure about libx264rgb. Is packed RGB encoding supported on high bit depth
> x264 builds?
> ---
>  doc/encoders.texi | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 69 insertions(+), 1 deletion(-)
> 
> diff --git a/doc/encoders.texi b/doc/encoders.texi
> index aa1af2c..e921409 100644
> --- a/doc/encoders.texi
> +++ b/doc/encoders.texi
> @@ -1506,7 +1506,7 @@ Text-like
>  
>  @end table
>  
> - at section libx264
> + at section libx264, libx264rgb
>  
>  x264 H.264/MPEG-4 AVC encoder wrapper.
>  
> @@ -1528,6 +1528,74 @@ by the libx264 @code{x264_param_parse} function.
>  The x264 project website is at
>  @url{http://www.videolan.org/developers/x264.html}.
>  
> +The libx264rgb encoder is the same as libx264, except it accepts RGB pixel
> +formats as input instead of YUV. More information in next subsection.
> +
> + at subsection Supported Pixel Formats
> +
> +x264 supports 8- to 10-bit color spaces. The exact bit depth is controlled at
> +x264's configure time. FFmpeg only supports one bit depth in one particular
> +build. In other words, it is not possible to build one FFmpeg with multiple
> +versions of x264 with different bit depths.
> +
> +The supported pixel formats for each bit depth is listed below.
> +
> + at subsubsection 8-bit Formats
> +
> +The following 8-bit pixel formats are supported:
> +
> + at itemize
> + at item
> +YUV420P
> + at item
> +YUVJ420P
> + at item
> +YUV422P
> + at item
> +YUVJ422P
> + at item
> +YUV444P
> + at item
> +YUVJ444P
> + at item
> +NV12
> + at item
> +NV16
> + at end itemize
> +
> + at subsubsection 8-bit Packed RGB Formats
> +
> +The following 8-bit packed RGB pixel formats are supported:
> +
> + at itemize
> + at item
> +BGR24
> + at item
> +RGB24
> + at end itemize
> +
> + at subsubsection 9-bit Formats
> +
> +The following 9-bit pixel formats are supported:
> + at itemize @code
> + at item
> +YUV420P9
> + at item
> +YUV444P9
> + at end itemize
> +
> + at subsubsection 10-bit Formats
> +
> +The following 10-bit pixel formats are supported:
> + at itemize @code
> + at item
> +YUV420P10
> + at item
> +YUV422P10
> + at item
> +YUV444P10
> + at end itemize

Is this the right place to document it? Is there some way to show this
information from the tools? Because I don't feel like I want to
document this for all the codecs, and it would end up massively
desynched with the code.
-- 
FFmpeg = Fascinating Fancy Merciful Perennial Enigmatic Genius


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