Hello everyone,

I'm currently writing a simple tool to convert MP3 (and later MP2 and 
MP1) to correct WAV files (with the exact bitrate, even for VBR files) 
that could be muxed with video accurately...

I was wondering how to detect correctly the fkae frames introduce by 
LAME, XING, etc when encoding.

So far I use a simple algo to check for the presence of "Info" or "Xing" 
in the first valid frame (excluding ID3v2) at a given position. It's 
correctly working.

But now I have a problem with the last frame that contains "LAME" at the 
same position (seems like). Is there any documentation on this frame ? I 
guess it doesn't contain audio. Is the "LAME" data always at the same 
position ?

Is there any other frames of this type on MP3 ? And MP2, MP1 ?

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