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.str...@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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