can these faults in a video be rectified

[perfection]

1. pixelation in a video clip
2. choppy video - the video freezes momentarily and then plays smoothly for a time and then such behaviour repeats as this is in the transmissionsignal i receive on mt set top box

Is their a progra, or praograms that i can run the videos through or a set of filters - perhaps?

[jagabo]

I suspect what your describing is the result of a weak signal -- so some of the MPEG packets were dropped, corrupting the picture. No, you can't restore the original video. Sometimes you can do things like lock still frames during segments where the picture gets corrupt, maybe use motion vectors to restore some corrupt panning shots, copy bits from good frames over the corrupt portions of bad frames. But it will be a lot of work and the results won't be perfect.

If you post a short sample I'm sure someone will take a look at it.