strange (possibly non-compliant) user_data seen... (not a problem, usually a sign of TMPGEnc)

is there any way ( / any program) that will get rid of this "possibly non-compliant" 'data'?

the reason I ask is after several coasters I don't seem to be able to get a particular VCD working on my Apex AD-1100WB with sound - it is perfectly White Book complaint and the only thing I can think of at the moment is this "possibly non-compliant" 'data'

Any ideas?

(P.S. MPEGtool doesn't seem to)