[FFmpeg-user] Audio Stream Mapping issue

Clément Bœsch ubitux at gmail.com
Thu Nov 17 18:10:45 CET 2011

On Thu, Nov 17, 2011 at 04:16:39PM +0000, Tim Nicholson wrote:
> On 15/11/11 17:20, Clément Bœsch wrote:
> >On Tue, Nov 15, 2011 at 05:03:53PM +0000, Tim Nicholson wrote:
> [...]
> >>With your help I think I have it sorted in my own mind, now. But I
> >>think the doc could be improved.
> >>
> >
> >Certainly, and such changes are always welcome.
> >
> >>>So if you want to fix the documentation, you should IMO just reword in a
> >>>sense to explicit the "only one pick per stream type". I'm not a native
> >>>English speaker so I'm sure you will be able to propose a better wording
> >>>than me; feel free to send a patch on ffmpeg-devel. If you don't, I'll
> >>>take the time to of course.
> >>
> >>Never tried submitting a patch so will haver to bone up on how to do it...
> >>
> >
> >For such a trivial patch you can just write here the new paragraph, I'll
> >write the patch and put your name in the credits. You can also try the
> >"hard way": http://ffmpeg.org/developer.html#Submitting-patches-1
> Here is my suggestion
> -------------cut--------------------
> By default ffmpeg includes only one stream of each type (video,
> audio, subtitle) present in input files and adds them to each output
> file.
> It picks the "best" of each based upon the following criteria;
> for video it is the stream with the highest resolution, for audio
> the stream with the most channels, for subtitle it's the first
> subtitle stream.
> In the case where several streams of the same type rate equally, the
> lowest numbered stream is chosen.
> -----------------cut-------------------------

Thank you, just submitted this version to ffmpeg-devel (you should have
received a copy of the patch). It will be discussed if necessary and
should be applied soon.


Clément B.
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