Mp3

iTunes was reporting a incorrect track time length for an audiobook that I created concatenating several mp3 together. I had to reencode the whole thing again to make iTunes recognize propertly the track lenght. I could’t reencode the concatenated file itself as that ended up with a Segmentation fault in lame cat *.mp3 |lame --mp3input - - >resultfile.mp3 cat *Night.mp3 |lame --mp3input - down.mp3 ID3v2 found. Be aware that the ID3 tag is currently lost when transcoding. LAME 3.98.2 64bits (http://www.mp3dev.org/) Using polyphase lowpass filter, transition band: 16538 Hz - 17071 Hz Encoding <stdin> to down.mp3 Encoding as 44.1 kHz single-ch MPEG-1 Layer III (11x) 64 kbps qval=3 bitstream problem: resyncing... bitstream problem: resyncing... bitstream problem: resyncing... bitstream problem: resyncing... This uses the lame streaming mode, decodes the input stream (all mp3 concatenated) as mp3 and then reencodes it as mp3. Although it complains about “bitstream problem: resyncing...”, the resulting mp3 sounds fine. ...

I couldn’t find any mp3 tagging utility using the cygwin setup.exe. So I google a bit and found this post about installing id3. To summarize, download id3 here and unpack it. wget http://home.wanadoo.nl/squell/files/id3-0.78.tar.gz tar xvzf id3-0.78.tar.gz cd id3-0.78 sed -ibak -e 's/^\(CFLAGS.*=.*$\)/\1 -mno-cygwin/' makefile sed -ibak -e 's/\($(CXX)\) \($(OBJECTS:=.o)\)/\1 $(CXXFLAGS) \2/' makefile make make install There are some issue with carriage returns when printing the tags on screen that you can fix with the instructions in here.