[Mp4-tech] Mpeg4 Visual

[Mohit Agarwal]

Hi All,
    Could someone please clarify the following points related to dynamic 
testing of MPEG-4 Video Decoders ?
Section 4.5.2 ("Dynamic Tests") of 14496-4 (I am referring to ISO/IEC 
14496-4:Second  edition) says "Dynamic tests are applied to check that 
all the reconstructed samples are output to the display process and that 
the timing of the output of the decoder's reconstructed samples to the 
display process conforms to the specification of subclause 7.13 of 
ISO/IEC 14496-2, and to verify that the decoder buffer verifier models 
(as defined by Annex D of ISO/IEC 14496-2, VBV, VCV and VMV 
specification) are not violated when the bits are delivered at the 
proper rate."
My questions :
(a) Subclause 7.13 of ISO/IEC 14496-2 refers to "3D Mesh Object 
Decoding". Is there a printing error in the text in 14496-4 ?
(b) From what I can understand in Annex D in 14496-2,  VBV, VCV and VMV 
are algorithms which are used for checking if a given bitstream obeys 
constraints defined in this Annex.  How can these constraints be used to 
perform the dynamic testing of a Video Decoder ?
Regards,
Mohit