[FFmpeg-user] Confusing ffprobe exit codes

[Nicolas George]

L'octidi 8 messidor, an CCXXI, Dalibor Mitrovic a écrit :
> I am having an issue while using ffprobe to gather information regarding
> the audio stream(s) of video files.
> 
> I use the following command line
> "ffprobe -show_streams -select_streams a singleAudioStreamVideoFile.mp4".
> ffprobe returns the requested meta data but exits with exit code "1"
> indicating that "the file cannot be opened or recognized as a multimedia
> file" [1].
> Calling ffprobe for the same video file and requesting meta data regarding
> the video stream, using the following command line
> "ffprobe -show_streams -select_streams v singleAudioStreamVideoFile.mp4"
> 
> results in the metadata being returned and exit code "0".
> The exit codes do not change if the parameter "-show_streams" is omitted.

I had noticed the problem for some time but not yet investigated it. It is
caused by the presence of the -select_streams options, and causes the exit
code to be the boolean value of the stream selection for the last stream.

I have sent a patch fixing it to the devel mailing-list, thanks for the
report.

Regards,

-- 
  Nicolas George
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