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using ffmpeg to convert file

To convert any file using ffmpeg
ffmpeg -i input.flac output.wav
-i stands for input

To get media information of any media file
mediainfo file.flac

To convert dual channel to mono channel audio using ffmpeg
 ffmpeg -i mic.flac -ac 1 out2.flac
-ac is audio channel
1 is converting to 1 channel

ffmpeg document
https://gist.github.com/protrolium/e0dbd4bb0f1a396fcb55

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