My approach (with some extras like fading in video and audio volume control): ffmpeg -i video.mp4 -i audio.mp3 -i music.mp3 -vf "fade=t=in:st=0:d=5" -filter_complex So music and video are allowed to be cut.Īll seperate task work in a way but putting everything together just doesn't work. The output should end after the length of audio.mp3 (or even better after the end of audio.mp3 + 5 seconds). I want to use ffmpeg (preferably a single command) to combine a video (video.mp4) file with an audio file (audio.mp3) and have some background music (music.mp3) playing. | ffmpeg -f mp3 -i -acodec copy outfile.What I'm trying to accomplish is the following: There is yet another way, without going through mp3wrap: cat file list. If so, us the xargs trick: $ find -name \*mp3|xargs mp3wrap all.mp3 If you have a lot of files to merge, you might run into the shell expansion limit by using a wildcard. You can also substitute the first line of code for this, in order to wrap all files in the folder together: mp3wrap tmp.mp3 *.mp3 Lameinfo is specified in the command because Lame had been used for the encoding of the original files, before using mp3wrap to combine them. Vbrfix -ri1 -ri2 -lameinfo tmp_MP3WRAP.mp3 all.mp3 & rm tmp_MP3WRAP.mp3
If you have problems with ffmpeg, a little program called vbrfix can be used instead: id3cp copies the ID3 tags from 1.mp3 to all.mp3.
You could also use something else, like mplayer/mencoder (-oac copy option) here. Unfortunately, it also leaves wrong file duration headers and clobbers any original ID3 tags. The following combines 1.mp3, 2.mp3 and 3.mp3 into all.mp3, and copies ID3 tags from 1.mp3: mp3wrap tmp.mp3 1.mp3 2.mp3 3.mp3įfmpeg -i tmp_MP3WRAP.mp3 -acodec copy all.mp3 & rm tmp_MP3WRAP.mp3 Install mp3wrap, ffmpeg and libid3 if you don’t have them already. Maybe you don’t care about ID3 tags, and your playback software doesn’t care about a wrong duration header (some ignore it)? But if you want to get your MP3 files right or you’re using something like iTunes, here is how it is done. There’s also the easy cat solution: cat 1.mp3 2.mp3 > all.mp3īut it doesn’t correct the duration, either. Unfortunately, it doesn’t correct the audio duration tags/headers (so iTunes/iPod will only see the first part of the file), and it clobbers your ID3 tags with its own (so that the file can later be unmerged with mp3split - this is a “feature”). There is a handy command-line utility for combining MP3 files, mp3wrap.
Well, it actually isn’t that hard at all. You’d think it would be very easy to combine multiple MP3 files into one, while preserving all the ID3 tag metadata and without re-encoding the audio (which is lossy).
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