"Florian Schulze" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On Sat, 11 Dec 2004 20:32:30 +0100, Ivo Woltring <[EMAIL PROTECTED]> > wrote: > > > mmpython will help but not always. > > Lets put it this way. I will ALWAYS read through the whole file. In that > > order I don't mind evaluating each frame. The thing I don't seem to be > > able > > to find is the timelength-constants for frames for the different mp3 > > versions, bitrates and layers. Can anybody help me? > > From http://www.oreilly.com/catalog/mp3/chapter/ch02.html#71109 > "In addition, the number of samples stored in an MP3 frame is constant, at > 1,152 samples per frame." > > > So you only need the samplerate for each frame to calculate the duration > of that frame. > > 1152 samples / 44100 samples per second ~ 0.026 seconds > > I don't exactly know whether you need to include mono/stereo into the > calculation, you would have to test that out. > > Regards, > Florian Schulze > thanks! will try this out Greetz, Ivo.
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