RIFX

RIFX is a variant of RIFF that uses big-endian byte order.

Note that the FourCC codes used for chunk names and other identifiers have the same order as in RIFF (left-to-right).

XFIR
Evidently, there is also a little-endian variant of RIFX, whose files begin with "XFIR" ("RIFX" backwards). The difference between "XFIR" and RIFF is that in "XFIR", the FourCC codes are stored in reverse order (right-to-left).

Identification
RIFX files begin with ASCII "".

Files that use the "XFIR" variant begin with "".

Links

 * RIFF specification
 * The RIFX File Format (from Corion.net, via FileFormat.info)