FFMPEG Command to Increase or Decrease Speed of Audio File Using atempo Filter in Windows 10 Full Tutorial For Beginners

 

Speeding up/slowing down audio

You can speed up or slow down audio with the atempo audio filter. To double the speed of audio:

The atempo filter is limited to using values between 0.5 and 2.0 (so it can slow it down to no less than half the original speed, and speed up to no more than double the input). If you need to, you can get around this limitation by stringing multiple atempo filters together. The following with quadruple the audio speed:

Using a complex filtergraph, you can speed up video and audio at the same time:

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