what command can find codec of audio file by ffmpeg.exe [closed]

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I am using command line ffmpeg.exe

Can any one tell me about some commands for:

1. how to get audio file codec.
2. how to get bitrate of audio file

   etc.

   Thanks in advance.

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Most of this is detailed, unsurprisingly in the ffmpeg documentation: http://ffmpeg.org/ffmpeg-doc.html

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