Answer by aakash rajput for How to compress mp3 file in php

    // Audio compress    $inputAudio = public_path('/audio/myaudio.mp3');    $outputAudio = public_path('/output/outputAudio.mp3');    exec("ffmpeg -i $inputAudio -ab 64 $outputAudio");    // Video compress    $inputVideo = public_path('/audio/myvideo.mp4');    $outputVideo = public_path('/output/outputVideo.mp4');    exec("ffmpeg -i $inputVideo -vf scale=1280:-1 -c:v libx264 -preset veryslow -crf 24 $outputVideo");