MP3s encoded in the bad old days usually sound rather bad. Not only were they often encoded at 96, 112 or 128 kbps, but the encoder software wasn't very smart either and didn't use those few kbps as efficiently as later software would.

After being annoyed by listening to one too many mushy, warbling tracks, I decided to write a script to go through my collection and identify all the albums where the average bitrate over the whole album was too low. (initially the script reported every album where at least one track had a low bitrate, however that resulted in false positives, due to the tendency of artists to have long, mostly empty tracks inbetween "hidden tracks", where modern encoders will justifiably encode all that empty space at the minimum bitrate.)

Using the revised script, I still had well over 400 albums with bitrates of 128 or less! There's another 180 or so which are at 160. :(

I've spent an entire night ripping and encoding my CDs, and only managed about 20 albums. It just takes ages to rip them, at least on my DVDROM drive with high levels of cdparanoia enabled to avoid scratches or glitches. I've also taken to looking for albums on thepiratebay and mininova, since it's a lot easier to just queue them for download rather than hang around ripping them!

However I just checked the latest results from the script, and there's still 385 128k-or-worse albums to go, and I haven't even started on the 160k ones.

I guess if I just try to whittle down a dozen or so every week, in slow moments, I'll gradually work through the lot in a year! I guess I'll target the albums I like and want to listen to a lot first.

I also worry that I should be using FLAC rather than MP3s from lame with preset=extreme, except that to be honest, I can't really hear the difference between the two, and MP3s are far more portable.. If I used FLAC, not only would I need to buy a couple of new harddrives to fit them and the backup copy, but I'd then need to maintain an entire other tree of them in MP3 anyway, so I can play them in the car stereo or on my ipod.


Has anyone else solved this problem (of needing to re-rip everything) before? How did you solve it?