Bad header fix, dev-api-4 is now decoded again with fdam. According to ISO/IEC 14496-2 VISOBJSEQ_START_CODE and profile must be present. I'm still unsure however if we're now perfectly compliant already: VISOBJSEQ_STOP_CODE should also be present but is never written.
Changed paths:
branches/dev-api-4/xvidcore/src/bitstream/bitstream.c