This .avi file was not in standard AVI format. To play the file in a popular media player such as Winamp or Windows Media Player, the file had to first be modified, using a hex editor to delete the first LIST block in the file header, which started at byte 12 (000C hex, first byte in file is byte 0) and ended at byte 63 (003F hex). Optionally, the file length (in bytes 4 to 7, little endian) should also be amended, by subtracting 52 (3F hex – 0C hex = 33 hex).