These references could also be useful for the DPX discussion: Bob Friesenhahn: "SMPTE 268M-2003 Specification Inadequacies", 2005-12-03 http://www.simplesystems.org/users/bfriesen/dpx/dpx-issues.pdf Bob Friesenhahn: "SMPTE 268M (DPX) Byte Order Issues", 2006-08-22 http://www.simplesystems.org/users/bfriesen/dpx/dpx-endian.pdf Best regards from Reto