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I have some MP3s that are in 48000 Hz sampling frequency. I'd like to burn them to CD, so I have to reduce the sampling frequency into 441000.

How to do that using ffmpeg?

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ffmpeg doesn't look to be the appropriate tool; I'd normally use sox for audio-only files.

$ sox file1.mpg -r 44100 file1-enc.mpg

If you want to try using ffmpeg anyway, I think the correct command would be something like

$ ffmpeg file1.mpg -ar 44100 file1-enc.mpg
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Yes sox is much better for audio, thanks for the tip! – Michael Pliskin Jan 4 '12 at 11:17
    
ffmpeg supports sox resampler since 1.1 – Benja Apr 10 '14 at 15:04
    
sox didn't directly work with MP3s for me. I had to install libsox-fmt-mp3 – gsmafra Mar 21 at 18:58

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