[M4IF Technotes] userdata in visual objects

[anthony don]

Hello,
Could you give me use-cases of userdata fields in visual objects bitstream.
It seems that this field can be used (in the case of video objects) only BEFORE actual rendering of video but not WHILE rendering (ie, there is no userdata in VOP's).
Thanks in advance,
Regards,
Anthony DON
Systmtv
Bordeaux, France
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