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  1. How do I make FFMPEG extract audio out of all clips in a folder? The following failed
    for %%i do "M:\ffmpeg.exe" -i "%%1" -acodec pcm_s16le "M:\%%~ni.wav"
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  2. Code:
    for "%%i"
    -i "%%1"
    Should both be the same letter.

    If it still fails post complete ffmpeg log/terminal output.
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  3. Good catch, but

    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation.  All rights reserved.
    N:\>for %%i do "M:\ffmpeg.exe" -i "%%i" -acodec pcm_s16le "M:\%%~ni.wav"
    %%i was unexpected at this time.
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  4. If you type directly into terminal instead of running a .bat file you need to use single % instead of double %%.
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  5. Well I have to use it in a terminal otherwise the window will close. Either way, with single % it complained "do" was not expected.
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  6. You need something like
    for %i in (*.mkv) do "M:\ffmpeg.exe" -i "%~i" -acodec pcm_s16le "M:\%~ni.wav"
    (.mkv extension)

    for %i in (*.*) do "M:\ffmpeg.exe" -i "%~i" -acodec pcm_s16le "M:\%~ni.wav"
    (Any file extension)
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  7. Thanks mang. I didn't realize in was needed if I already cd'd to the directory which means this would've worked the first time if I just used it inside the .bat.
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