[FFmpeg-user] Extract all audio regardless of stream/channel count

[Markku Vainio]

Hello,

I've used this my AudioSplitter.bat script placed in windows "send to" folder for quick access. It could probably be much smarter but anyways it does the job for me. It loops now 50 times and creates 24bit wav files.

--------------------------------------
set ch=0
set tr=0
set count=0

:channelsplit
ffmpeg -i %1 -map 0:%tr% -map_channel 0.%tr%.%ch% -acodec pcm_s24le %1_%tr%_0%ch%.wav
set /A ch +=1

IF %ERRORLEVEL% NEQ 0 goto :nexttrack
goto:channelsplit

:nexttrack
if /I %count%==50 goto :eof
set ch=0
set /a tr +=1
set /a count +=1

echo %ch%
echo %tr%
echo %count%

goto:channelsplit

pause
--------------------------------------------



Regards,

Markku.

-----Original Message-----
From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Carles Vila
Sent: 10. helmikuutata 2017 13:40
To: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Subject: [FFmpeg-user] Extract all audio regardless of stream/channel count

Hi,
I'd like to know if there is a simple way (script) to extract all audios individually from a video. The video could have N stereo streams (normally up to 16), M mono streams (up to 16), or a combination of both. Now I have to write the -map structure manually after probing the input. Ideally I need to end up with as many mono wavs as individual channels.
If you could give me a starting point, I could probably figure out.
Thank you!
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