Re: [mad-dev] max mp3 frame size?

Lam Yick Yan superylam@netscape.net wrote:

Is there a maximum size for mp3 frames that I could safely set as the buffer size?

According to "Bertrand Petit" who wrote madlld (mad low-level demonstration): (can found in MAD main page)

• When this occurs, the remaining unused bytes must be
• put back at the beginning of the buffer and taken in
• account before refilling the buffer. This means that
• the input buffer must be large enough to hold a whole
• frame at the highest observable bit-rate (currently 448
• kb/s). XXX=XXX Is 2016 bytes the size of the largest
• frame? (448000*(1152/32000))/8

I'm not sure where 448 kb/sec comes from.... ?

If you substitute 320 kb/sec into the above formula however, the largest possible MP3 frame comes out as 1440 bytes which I believe is the correct answer.

Andre --

__________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com