Re[2]: [PHP] Find out how long an MP3 is

Lawrence.Sheed@dfait-maeci.gc.ca wrote this on 22-11-2000: LSdmgc> There is no length indicator in an mp3 file - would seem logical in its LSdmgc> current usage, but mp3 was envisaged as a broadcast medium - ie no fixed LSdmgc> endpoint. <snip> LSdmgc> There must be SOME way, because Napster, Gnutella and others list the LSdmgc> length and bitrate of all the MP3 files you find in a search. LSdmgc> I'm sure they're not playing every track on every hard drive in the world. LSdmgc> It's out there somewhere... I believe what Napster does, at least, is calculate the length from the file size and the bitrate. Something like: (filesize in bytes - header and tag size in bytes) / (bitrate / 8). Should give you the length in seconds. At least I guess that's how it does it, because it always screws up the length of variable bitrate files. I guess you have to do some strange things to get the length of those... Kindest regards, Kjetil -- "You don't have a disease. You just live in New Jersey." | OMNIS/PHP/SQL Developer for FIQAS Software, Aalsmeer, The Netherlands. | } If I had an opinion in this message, it's probably my own. {