Hello,

This is my first post on this site; if I'm breaking any rules (or in the wrong forum) let me know.

I'm doing some research on steganography with mp3 files, and one of the things I need from an army of mp3 files is statistical data on the block lengths within the frames.

So, I've done some reading, here, other links, and some other textbooks...but what sort of tool/algorithm I should use to extract this information has eluded me, so I thought I'd hit the boards.

I've written a program that extracts frame header information, but I'm not sure where to go from here. I don't know if there is a way I can extract the block lengths directly from the side information (not real familiar with that either) or if it might be just easier to modify a decoder to just output the block lengths, rather than trying to write the tool myself.

I was hoping a discussion might lead me to an answer...thanks for your help.

Anyone? Does anyone have an idea where I could post this and get some help?

What is meant with block length?

Well, from how I understand it (which isn't that well), when audio data is quantized and stored, it is formed into blocks, which can be of different sizes. Not sure is the block is before or after compression, that's another piece of the puzzle I was hoping you guys could help me clarify.