i found very good prog its VisiCrop!!!
i worked before with another prog and i liked it, but now i understand thats that prog was lil dull...this prog giving more help and very easy to use coz its step by step.is a really powerful video cropping program that can cut and save a part from any video file. You can remove unwanted frames and parts of video file by cropping it, which gives a zoomed in, cramped image with much important video information.
and btw its have good demo without timelimit!!!
i think its great...i use demo now coz im just found it but im already inlove and want to help,to share it with all of you!!!