[FFmpeg-user] Mapping multiple audio streams

Carl Eugen Hoyos cehoyos at ag.or.at
Mon Apr 2 15:32:39 CEST 2012

Matthew Salisbury <matthew.salisbury <at> autonomy.com> writes:

> Suppose I have an input with n audio streams. If I want to 
> generate a separate output file for each stream is there a 
> way of doing this via a single command?

I wonder how such a command line would look like...

> Bearing in mind the number of audio streams in the input is
> unknown. Would I need to interrogate the input first and 
> determine how many streams it contains?

Yes, you need to specify the mapping and the file name for 
all output files on the command line.

Carl Eugen

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