I googled and found this:
ZMV Format
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Header
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0x00 3 bytes - "ZMV"
0x03 2 bytes - ZMV Version # (version of ZSNES)
0x05 4 bytes - CRC32 of ROM
0x09 4 bytes - Number of frames in this movie
0x0d 4 bytes - Number of rerecords
0x11 4 bytes - Number of frames removed by rerecord
0x15 4 bytes - Number of frames advanced step-by-step
0x19 1 byte - Average recording FPS (includes dropped frames) x4-5 for precision
0x1a 4 bytes - Number of key combos
0x1e 2 bytes - Number of internal chapters
0x20 2 bytes - Length of author name
0x22 3 bytes - Uncompressed ZST size
0x25 2 bytes - Initial input configuration
1 bit - Input 1 enabled
1 bit - Input 2 enabled
1 bit - Input 3 enabled
1 bit - Input 4 enabled
1 bit - Input 5 enabled
1 bit - Mouse in first port
1 bit - Mouse in second port
1 bit - Super Scope in second port
8 bits - Reserved
0x27 1 byte - Flag Byte
2 bits - Start from ZST/Power On/Reset/Power On + Clear SRAM
1 bit - NTSC or PAL
5 bits - Reserved
0x28 3 bytes - 1 bit for compressed or not, 23 bits for size
0x2b ZST size - ZST (no thumbnail)
at
http://board.zsnes.com/phpBB2/viewtopic.php?p=141341&highlight=&sid=24243b2c85292686825f878232abec1f.
I've added the offsets and
bolded what are new there myself. I hope this can help you.