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I want to convert a church service mp4 video into a mp3 soundtrack.

I found ffmpeg and I tried a lot of syntax. Even the easiest didin't work.

ffmpeg -i 2026857739212839680.mp4 output_file.mp3

From other articels I found that this should be the most best match to what I want to do. But again the failure.

What am I doing wrong?

ffmpeg -i 2026857739212839680.mp4 -vn -b:a 128k -c:a libmp3lame output_file.mp3

Here the output:

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2026857739212839680.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.29.100
      Duration: 00:22:18.94, start: 0.000000, bitrate: 2916 kb/s
        Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 2849 kb/s, 29.76 fps, 29.85 tbr, 90k tbn, 180k tbc (default)
        Metadata:
          handler_name    : VSH264 stream handler
        Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 63 kb/s (default)
        Metadata:
          handler_name    : AAC stream handler
      [NULL @ 000002ad5c2b00c0] Unable to find a suitable output format for '\ffmpeg'
\ffmpeg: Invalid argument
xMRi
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