[libav-devel] [PATCH 4/5] doc/avconv: expand documentation for the -s option.

Justin Ruggles justin.ruggles at gmail.com
Mon May 28 20:11:46 CEST 2012


On 05/26/2012 10:54 AM, Anton Khirnov wrote:
> ---
>  doc/avconv.texi |   14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/doc/avconv.texi b/doc/avconv.texi
> index d6e4096..693c45e 100644
> --- a/doc/avconv.texi
> +++ b/doc/avconv.texi
> @@ -260,8 +260,18 @@ Set the number of video frames to record. This is an alias for @code{-frames:v}.
>  Set frame rate (Hz value, fraction or abbreviation), (default = 25). For output
>  streams implies @code{-vsync cfr}.
>  @item -s[:@var{stream_specifier}] @var{size} (@emph{input/output,per-stream})
> -Set frame size. The format is @samp{wxh} (default - same as source).
> -The following abbreviations are recognized:
> +Set frame size.
> +
> +As an input option, this is a shortcut for the @option{video_size} private
> +option, recognized by some demuxers for which the frame size is either not
> +stored in the file or is configurable -- e.g. raw video or video grabbers.
> +
> +As an output option, this inserts the @code{scale} video filter to the
> + at emph{end} of the corresponding filtergraph. Please use the @code{scale} filter
> +directly to insert it at the beginning or some other place.
> +
> +The format is @samp{wxh} (default - same as source).  The following
> +abbreviations are recognized:
>  @table @samp
>  @item sqcif
>  128x96

LGTM

-Justin



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