[FFmpeg-devel] [PATCH] ffmpeg options: Enable trailing ? for map_channel

Kv Pham pkv.stream at gmail.com
Thu Aug 24 08:32:18 EEST 2017


Ah sorry about that. I forgot about the tabs.
Will correct and add update to doc.
Thanks


Le 24 août 2017 2:32 AM, "Michael Niedermayer" <michael at niedermayer.cc> a
écrit :

> On Wed, Aug 23, 2017 at 06:48:14PM +0200, pkv.stream wrote:
> > Hello,
> >
> > the following patch allows one to add a trailing ? to -map_channel
> > as in -map option.
> >
> > E.g: -map_channel 0.0.2? so that if the channel does not exist, the
> > command does not stop.
> >
> > This is similar to what one can do with -map.
> >
> > Thanks for any input.
> >
> >
>
> >  ffmpeg_opt.c |   24 ++++++++++++++++++++----
> >  1 file changed, 20 insertions(+), 4 deletions(-)
> > 28689933986d73050286e700752ace032df6dc1b  0001-ffmpeg-options-Enable-
> trailing-for-map_channel.patch
> > From 07959dfe79816d03c30b8027f45b41d60078b3fa Mon Sep 17 00:00:00 2001
> > From: pkviet <pkv.stream at gmail.com>
> > Date: Tue, 22 Aug 2017 11:30:45 +0200
> > Subject: [PATCH] ffmpeg options: Enable trailing ? for map_channel
> >
> > The -map option allows for a trailing ? so that an error is not thrown if
> > the input stream does not exist.
> > This capability is extended to the map_channel option.
> > This allows a ffmpeg command not to break if an input channel does not
> > exist, which can be of use (for instance, scripts processing audio
> > channels with sources having unset number of audio channels).
> > ---
> >  ffmpeg_opt.c | 24 ++++++++++++++++++++----
> >  1 file changed, 20 insertions(+), 4 deletions(-)
>
> the patch contains tabs (cannot be pushed to git master)
> and this is missing an update to the documentation
>
> [...]
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> Elect your leaders based on what they did after the last election, not
> based on what they say before an election.
>
>
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