[M4IF Technotes] GOV header for enhancement layer

[B Jagadeesh]

Dear All,
Group of VOP (GOV) header is optional as per the MPEG-4 visual standard.
In the case of temporal scalability, if an encoder decides to have a GOV
header in the base layer, should the GOV header be present in the
corresponding enhancement layer bit stream also?
Can GOV header be present in the enhancement layer bit stream? Is it
allowed as per MPEG-4 Visual standard?
If base layer has GOV header and enhancement layer does not, then
calculation of the Composition Time Stamp (CTS) for an enhancement
layer VOP will depend on CTS of the Base layer VOPs.
I request experts to comment on this.
regards,
B. Jagadeesh, Ph.D.,
Sasken Communication technologies Limited,
Bangalore, Inida.