Artifacts in captured video

[NiKiL]

http://i39.tinypic.com/5qi5e.jpg
http://i43.tinypic.com/2wqvqty.jpg

how can I remove these artifacts?

http://www.mediafire.com/?sharekey=d925e3afb100007790a82c7bb0fad7ade04e75f6e8ebb871

[Guest]

Next time post scenes with more motion.

Anyway, it looks field-blended. Search for "blended fields".