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Sur d’autres sites (8005)

  • How to change audio tempo and pitch individuality using ffmpeg ?

    25 août 2023, par Vipul Purohit

    I have managed to play audio files using ffmpeg and AudioTrack class in my android project. I can change the speed of audio using AudioTrack class setRate method. But it also change the pitch of audio, I want to change only Tempo of audio but I found no solution on net.

    



    anyone can please help me on this as there is no support for this.

    


  • Android ffmpeg command not working for pitch & tempo change

    15 juillet 2019, par Hardip

    I’m trying to use below command to change pitch & tempo in my existing mp4 file, can anybody help me to correct ffmpeg command.

    ffmpeg [-y,-i,/storage/9016-4EF8/abcd video.mp4,-af,asetrate=r=46722.3224612449211671764955071340,-filter_complex,[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a],-map,[v],-map,[a],-vcodec,mpeg4,/storage/emulated/0/cut_video.mp4]

  • How to change pitch and tempo together, reliably with ffmpeg

    12 novembre 2016, par jake

    I know how to change tempo with atempo, but the audio file becomes distorted a bit, and I can’t find a reliable way to change pitch. (say, increase tempo and pitch together 140%)

    Sox has a speed option, but truncates the volume AND isn’t as widely available as ffmpeg. mplayer has a speed option which works perfectly, but I can’t output without additional libraries.

    I seem to understand ffmpeg doesn’t have a way to change pitch (maybe it does recently ?) but is there a way to change frequency or some other flags to emulate changing pitch ? Looked quite far and can’t find a decent solution.

    Edit : asetrate:48k*1.4 (assuming originally 48k) doesn’t seem to work, still distortion and pitch doesn’t really change much.

    Edit2 : http://superuser.com/a/1076762 this answer sort of works, but the quality is so much lower than sox speed 1.4 option

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