ffmpeg -i video.mp4 -vn audio.mp3
ffmpeg -i input.mp4 -vcodec libx265 -crf 28 output.mp4

For AAC format without any conversion:

ffmpeg -i movie.mp4 -vn -acodec copy output.aac

Compress mp3 file with variable bitrate

ffmpeg -i input.mp3 -q:a 4 output.mp3

q:a with 6 is also ok! I released my episode with that and size is better.

پادکست ایستگاه هوش مصنوعی