If it's some other codec, this will reencode: > ffmpeg -i video.mp4 -map 0:1 audio. If the audio (in this case, stream 0:1), is already MP3, you can just copy it out: > ffmpeg -i video.mp4 -map 0:1 -c copy audio.mp3 You can inspect the file with > ffmpeg -i video.mp4Īnd you'll see something like Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':ĭuration: 00:00:52.67, start: 0.000000, bitrate: 909 kb/s ![]() To find out how to do convert MP4 to MP3 by. ![]() If you're okay with using the command line, it's very powerful. Using this application, you know that your output audio files wont lose a single Hz of their original quality. MP4 is just a container, and the audio stream inside it may already be MP3. It’s a program that works well and quickly, but its limited supported file formats really make it a. ![]() This process is also known as ripping audio from video, but do make sure that these are the file formats you need before downloading. You may or may not actually need to convert anything here. Free MP4 MP3 Converter is a simple app that converts MP4 files (usually videos) to MP3 files (usually audio).
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