struct j2v_header {
char Magic[8]; //"CineFeed"
long Filesize;
long crc32; //Haven't actually tested this, but analogy with other files suggests a checksum.
long Width; //640, or 320 for the low quality versions
long Height; //480, or 200
}
After that I dunno. The next eight bytes are similar but not necessarily identical between high- and low-quality versions, so maybe it's length or something. Before each zlib block there's a long which is related to the block's length, but the blocks seem to have some extra non-zlib material after them that's also included in the value of the length longs. There's a lot of random other stuff floating around in there too, though. You could check against the <a href="http://www.shikadi.net/moddingwiki/Jazz_Jackrabbit_Cutscene_Format">JJ1 format</a> for reference, but I doubt the two are actually too similar.