[M4IF Technotes] Re: Is interlaced in simple profile?

[Adam Kelly]

Hi Lei,
Section 7.7 of ISO/IEC 14496-2:1999(E), nor Annex N specify this, but if
you look
at section 6.2.5 (Video Object Plane), it seems that the interlaced bit
is only checked if video_object_layer_shape != "binary only".
video_object_layer_shape is a 2 bit integer (see table 6-14)
So, to put all that in english, it appears that interlaced is
valid/possible at any layer and profile that you have encountered a VOP
in, IF the VOL is of shape type "rectangular", "binary" or "grayscale"
Hope this helps,
Adam