[FFmpeg-devel] [RFC]Slightly extend the -r input option documentation

Lou Logan lou at lrcd.com
Thu Jun 19 20:06:48 CEST 2014

On Wed, 18 Jun 2014 14:16:52 +0200, Carl Eugen Hoyos wrote:

> diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
> index 68fd12f..6f3c2c3 100644
> --- a/doc/ffmpeg.texi
> +++ b/doc/ffmpeg.texi
> @@ -473,6 +473,9 @@ Set frame rate (Hz value, fraction or abbreviation).
>  As an input option, ignore any timestamps stored in the file and instead
>  generate timestamps assuming constant frame rate @var{fps}.
> +This is not the same as the @option{-framerate} option used for some input formats
> +like image2 or v4l2 (it used to be the same in older versions of FFmpeg).
> +If in doubt use @option{-framerate} instead of the input option @option{-r}.

Should x11grab be added to the input format list? According to:


-r and -framerate differ there too.

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