it -ac die Anzahl der Audio-Kanäle festgelegt.
Hoff es hilft Dir weiter.
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Um z.B. den 2. (deuts... vob file on-disk, so let's see what ffmpeg thinks of it:
<code>
$ ffmpeg -i mr.vob
FFmpeg version SVN... om several files. "input" is the zero-based index of the input file we want to use − 0 for the first, 1 for the second etc. "stream" is the number of the stream within this file that we want to use,
