
Figure 40.1
MPEG-2 frame
picture
contains an array of
luma samples
SAL
columns by
L A rows. It is implicit that an
AAPEG-2 frame picture occu-
pies the entire frame time.
Figure 40.2
MPEG-2 field picture pair
contains a
top.field
picture and a
bottom field
picture, each SAL columns by
LA/2
rows. The samples are vertically offset. Here I show a pair
ordered (top, bottom}; alternatively, it could be {bottom, top}.
Concerning the relation between top and bottom fields and
video standards, see
Interlacing in NIPEG-2,
on page 98.
I, P, and B picture coding types
were introduced on page 121.
Code Value
0000
Forbidden
0001 24/1