[FFmpeg-devel] [PATCH] avfilter: Handle =help to show Filter options documentation

[Stefano Sabatini]

On date Friday 2013-03-29 17:53:57 +0100, Clément Bœsch encoded:
> On Fri, Mar 29, 2013 at 05:26:19PM +0100, Michael Niedermayer wrote:
> > Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> > ---
> >  libavfilter/avfilter.c |   14 +++++++++++++-
> >  libavfilter/avfilter.h |    1 +
> >  2 files changed, 14 insertions(+), 1 deletion(-)
> > 
> 
> As said on IRC, I would prefer something like:
> 
>  ./ffmpeg -help filters
>  ./ffmpeg -help filter=curves
> 
> Same with all the tools, supporting codecs, formats, etc.
> 
> And as a default message for -h and -help, an extended version of the "Getting
> help" from ffmpeg.c, and without any option displayed unless you explicit
> "full" or some module.

+1.

Also the patch is adding a special case on argument parsing (the
"help" string is special) which I tend to dislike. For example we
could have: "drawtext=help" to draw "help".

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