FFmpeg can be used to convert any type of media file to other formats in a single command and the command to convert an MP3 file to an MP4 file is as below: ffmpeg -i input.mp3 output_simple.mp4 The file generated is an audio-only MP4 file and it can be played on a media player perfectly.
The best Opus Codec commands in DOS/Windows Command would be: For lib 1.3, smallest filesize (tape quality): Opusenc a.wav a.opus --bitrate 24 --framesize 40 --discard-comments --discard-pictures. You will: a- at 24kbits still have a 16kHz (32kHz stereo) sonic output, on a super small size.
On my server therer is ffmpeg 4.2.4. When I run apt install ffmpeg it says ffmpeg is already the newest version (7:4.2.4-1ubuntu0.1).. How to upgrade to version 4.4 on the command line? – The ffmpeg download page states "7:4.4.1-2ubuntu1" as the latest. –
Unlike MP3, Wav is a lossless format, so sound quality should not have been lost in decoding MP3 to Wav. (Not sure why you'd want that anyway in many cases, as that will greatly increase the file size and not increase the quality.) On the other hand information will be lost if you encode it back to MP3 from Wav, but you can of course try it
Extract audio using the -vn parameter. The -vn parameter blocks any video stream to be copied from the input to the output and can be used for transforming a video file into an audio only file. ffmpeg \ -i video1.mp4 \ -vn \ -y output.mp3. In the command above, after specifying the video input file, the -vn blocks any video stream to be copied
You can use cdparanoia to grab the individual audio tracks "bit-perfect" (without transcoding) first, and then run ffmpeg on them. Using the -B flag will give you the tracks named e.g. track01.wav so you can use a script to batch the resultant files to ffmpeg. Thank you but I'd like to use ffmpeg which is available for both linux and windows
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convert mp3 to wav ffmpeg