[vorbis] Encoder signature question

[mike wakerly]

Hello All,

Quick question here... I've been playing with the last few releases (and 
am very much impressed, of course!) and have encoded a number of files. 
Yet, I wonder if there is a way for me to check some information about 
how the file was encoded. Specifically, I'd like to know:

        - app that encoded it (probably oggenc for now, but what if XYZ 
inc's encoder is notoriously lousy?)
        - library release version (Right now, I can't quite tell which file 
was made with Beta 4, etc..)
        - stereo coupling options? (this must be there somewhere, but 
explicitly?)

I am guessing some (or all) of these parameters might be buried 
somewhere in the files, just not visible with ogginfo. Some sort of 
reliable encoder signature containing this information would be very 
useful for tracking poor quality, etc, that happened at the encode level.

Thanks!
Mike

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