All,
I am developing an application to play MP3 files encoded with VBR content.
For this purpose,it is required to know the number of frames in the mp3 file
to calculate file time duration and also for rewind,forward functionality.
I understand that since VBR does not have fixed bitrate on a frame basis it
is difficult to
calculate file duration.One approach would be to find the syncword and hence
the bitrate
in the frame header for each frame and  build a table of frame sizes.

However in a embedded application (say a mp3 player on a mobile),this takes
relatively considerable complexity.So a technique with reasonable real time
complexity
is preferred.
Any pointers on a better technique to handle this problem would be
appreciated.

Regards,
C.S. Srinivasan


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