JJZolx Wrote: > Yes, I guess ABR makes more sense than VBR, since the point of setting a > bitrate is to specify the the network bandwidth used. > > http://lame.sourceforge.net/doc/html/modes.html
Right - VBR is always better than CBR except in very special "legacy" circumstances. The only time I could imagine CBR being useful is if you have some fixed-rate transmission speed (eg an ISDN line or satellite link) feeding a decoder with a _very_ small buffer (ie just a couple mp3 frames). Also the earliest portable mp3 players would barf on VBR because they didn't know how to calculate the song time or something stupid like that. note that in terms of the mp3 format, VBR is really the same as CBR. All mp3 frames have a bitrate which is one of the standard CBR rates. A VBR stream just means that the bitrate can be different from one frame to the next. Encoding with CBR means you're wasting bits when the signal is simple, and depriving yourself of bits when the signal is complex. VBR allows variance so even for the same average bit-rate, you get a much better encoding. -- seanadams _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
