OK, now do it again... show a keyframe and then make some changes, then more
changes.
Now, imagine we've cut a section so skip ahead in the video to a random B- or
P-frame.
This frame contains changes - but they're for a completely different image.
So if you apply these changes you end up with a pixellated multicolour screen
for a few frames (until a new I-frame appears).
I would just like to add again that this procedure only works 95%
of the time for broadcast/cable captures... about 80% of the time for tape
transfers. Avidemux cannot deal with chaning A/V sync throughout the
file, and this method will have broken sync with one of these
unfortunate captures. The author of avidemux acknowleges this
limitation, but says a fair bit of internal work would be needed to fix
it.
-Cory
*************************************************************************
* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
*************************************************************************
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