30. Suppose you want to implement fast-forward and reverse for
MPEG streams. What problems do you run into if you limit your
mechanism to displaying I frames only? If you don’t, then to
display a given frame in the fast-forward sequence, what is the
largest number of frames in the original sequence you may have to
decode?
31. Use mpeg play to play an MPEG-encoded video. Experiment with
options, particularly -nob and -nop, which are used to omit the B
and P frames, respectively, from the stream. What are the visible
effects of omitting these frames?
30. Suppose you want to implement fast-forward and reverse forMPEG streams. What problems do you run into if you limit yourmechanism to displaying I frames only? If you don’t, then todisplay a given frame in the fast-forward sequence, what is thelargest number of frames in the original sequence you may have todecode?31. Use mpeg play to play an MPEG-encoded video. Experiment withoptions, particularly -nob and -nop, which are used to omit the Band P frames, respectively, from the stream. What are the visibleeffects of omitting these frames?
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