php - How to join several mp3s (wavs) on server? -


i'm looking possibility join several audio files in 1 on server.

example: audio_01.mp3 / 33sec + audio_02.mp3 / 22sec = audio_03.mp3 / 55sec

server - linux based, main language php (just in case)

could please point me in right direction?

thanks in advance!

using ffmpeg

this concatenate 2 mp3 files, , resulting metadata of first file:

ffmpeg -i "concat:file1.mp3|file2.mp3" -acodec copy output.mp3

this because, ffmpeg, whole "concat:" part single "input file", , metadata of first concatenated file. if want use metadata second file instead, have add dummy input file , map metadata of output:

ffmpeg -i "concat:file1.mp3|file2.mp3" -i file2.mp3 -acodec copy test.mp3 -map_metadata 0:1

if want construct metadata 2 metadatas, you'll have hand. can dump file's metadata with

ffmpeg -i file1.mp3 -f ffmetadata file1.metadata

after dumping both metadatas , constructing new metadata, can add output file -metadata, , can disable metadata copying setting -map_metadata mapping negative input file number. sets name value , no other metadata:

ffmpeg -i "concat:file1.mp3|file2.mp3" -acodec copy -metadata "title=some song" test.mp3 -map_metadata 0:-1

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