Re: [FFmpeg-devel] [PATCH] doc/filters/aspect: update documentation

[Gyan Doshi <ffmpeg@gyani.pro>]

On 2023-03-26 11:45 pm, Stefano Sabatini wrote:
> Drop mention of unsupported N:M syntax, dropped since 0ed61546c459.
>
> Also, drop reference of common expression constants, and fix
> description of a expression parameter.
>
> Fix issue:
> http://trac.ffmpeg.org/ticket/9974
> ---
>   doc/filters.texi | 18 +++++-------------
>   1 file changed, 5 insertions(+), 13 deletions(-)
>
> diff --git a/doc/filters.texi b/doc/filters.texi
> index 889de8b11a..8d4c6ae2f6 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -20888,12 +20888,9 @@ It accepts the following parameters:
>   @item r, ratio, dar (@code{setdar} only), sar (@code{setsar} only)
>   Set the aspect ratio used by the filter.
>   
> -The parameter can be a floating point number string, an expression, or
> -a string of the form @var{num}:@var{den}, where @var{num} and
> -@var{den} are the numerator and denominator of the aspect ratio. If
> -the parameter is not specified, it is assumed the value "0".
> -In case the form "@var{num}:@var{den}" is used, the @code{:} character
> -should be escaped.
> +The parameter can be a floating point number string, or an expression. If the
> +parameter is not specified, it is assumed the value "0", meaning that the same
> +input value is assumed.

A more idiomatic phrase would be

`If the parameter is not specified, the value "0" is assumed, meaning that the input value is used.`


Regards,
Gyan

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