[FFmpeg-devel] [PATCH] ffmpeg options: Enable trailing ? for map_channel
michael at niedermayer.cc
Sat Aug 26 00:42:35 EEST 2017
On Thu, Aug 24, 2017 at 11:10:49PM +0200, pkv.stream wrote:
> Thanks a lot Martin !!! all sorted out thanks to your kind help.
> I had run fate previously but obviously missed something; so re-run
> and it's ok.
> I created two tests per your advice testing for a third channel in a
> stereo file and then in a 2.1 file.
> Instead of CRC, I've used MD5 because the extant mapchan fate tests
> were using it.
> Updated patch in attachment.
> Michael: would that be OK or do you see other changes to make ?
> doc/ffmpeg.texi | 13 +++++++++++-
> ffmpeg_opt.c | 21 +++++++++++++++++---
> tests/fate/ffmpeg.mak | 8 +++++++
> tests/ref/fate/mapchan-2ch-extract-ch0-ch2-trailing | 1
> tests/ref/fate/mapchan-3ch-extract-ch0-ch2-trailing | 1
> 5 files changed, 40 insertions(+), 4 deletions(-)
> 1d35047c00f25dc1391a541eb704a03a9c9198de 0001-ffmpeg-options-Enable-trailing-for-map_channel.patch
> From 5c3b0fed39b713b19ed53b5704b1fce63b2742ad 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).
added missing av_free()
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Asymptotically faster algorithms should always be preferred if you have
asymptotical amounts of data
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