No problem found. Note: The encoder that was used to produce this bitstream did not implement the recommendation expressed in Note 2 of section 7.4.4. ------------------------------------------------------------------------ I have included the vbv trace file. Note: in the vbv trace file included, the value of Buffer_fullness (before removing any headers) is known to be sometimes incorrect, due to a bug in my trace program. This does not affect the other Buffer_fullness values. Regards, --Tristan (tristan@la.tce.com)