[Mp4-tech] Blockiness in Macroblocks

[Aparna Sundar]

Hi all,
Iam working on a H.263 decoder implementation.I have a strange
problem....particular macroblocks in the decoded frame get discoloured...i
get violet and red blocks in the image actually...as the decoding goes
on,this influences the subsequent P frames and finally when the decoding
ends 1 frame is always missed out...Though this is happening for a
H.263decoder, I want to know if any particular component could cause
this kind of
error...any idea's anyone on hw i can go about solving this?I have tried
checking the parsing process by comparing intermediate values with those
from a reference implementation but to no avail...
Thanks in advance,
Aparna
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