sandys · July 26, 2012 17:50
diff --git a/mp3_combine.sh b/mp3_combine.sh
 sudo apt-get install libavcodec-extra-53

 #This method re-encodes the audio. This method is slow, and lossy (mostly noticeable when using low bitrates), but the resulting mp3 file is properly playable in most media players. There are ways to merge mp3s without re-encoding, but the duration of the files can often not be properly detected by most players.
 cvlc aa.mp3 bb.mp3 cc.mp3 --sout "#transcode{acodec=mp3,ab=<bitrate>,channels=2}:std{access=file,mux=raw,dst=1.mp3}" --sout-keep

 #much faster
 sudo apt-get install vbrfix libid3-tools libav-tools
 cat 1.mp3 2.mp3 3.mp3 > tmp.mp3
 #OR
 ffmpeg -i concat:file1.mp3\|file2.mp3 -acodec copy tmp.mp3
 id3cp 1.mp3 tmp.mp3
 vbrfix  --XingFrameCrcProtectIfCan tmp.mp3 final.mp3
	sudo apt-get install libavcodec-extra-53

	#This method re-encodes the audio. This method is slow, and lossy (mostly noticeable when using low bitrates), but the resulting mp3 file is properly playable in most media players. There are ways to merge mp3s without re-encoding, but the duration of the files can often not be properly detected by most players.
	cvlc aa.mp3 bb.mp3 cc.mp3 --sout "#transcode{acodec=mp3,ab=<bitrate>,channels=2}:std{access=file,mux=raw,dst=1.mp3}" --sout-keep

	#much faster
	sudo apt-get install vbrfix libid3-tools libav-tools
	cat 1.mp3 2.mp3 3.mp3 > tmp.mp3
	#OR
	ffmpeg -i concat:file1.mp3\\|file2.mp3 -acodec copy tmp.mp3
	id3cp 1.mp3 tmp.mp3
	vbrfix --XingFrameCrcProtectIfCan tmp.mp3 final.mp3