Haven't looked specifically at mp3 but with most sound formats the "sample rate" divided into the number of characters in the file should produce the time length (i.e. 22000 samples per second divided into a 440000 byte data length results in 20 seconds of sound). Seems to me that with most formats (wav, etc) the sample rate is recorded with the data so that the player can play back at the correct rate. Not familiar with oog but did find some references to ogg (google is your friend here). http://www.borg.com/~jglatt/tech/wave.htm Google produced the following on mp3 http://mpgedit.org/mpgedit/mpeg_format/MP3Format.html http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm Hope this helps, Warren Vail -----Original Message----- From: Paul Reinheimer [mailto:preinheimer@xxxxxxxxx] Sent: Thursday, October 07, 2004 4:04 PM To: php-general@xxxxxxxxxxxxx Subject: Determining the length (in an audio sense) of an MP3 Hi, I am trying to determine the length (in terms of seconds) of an MP3 file. I have seen the ID3 pear project, but I didn't see anything there to tell me how long the song was. There is a fileinfo pecl project, but it doesn't mention MP3s and I couldn't find any good documentation for it (looking at the pecl site). Does anyone know of an decent way to determine the length of a song? What about other formats (oog, wav, etc?). thanks paul -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
