Hallo everybody.
I've done this after so many tries to reach the perfection provided by AVID. Actually it isn't the best that you can get, but it is far better from what sony vegas event crop can offer. As I have done this in a kind of hurry, as soon as I make some extra time, I will let you know how to keep the same aspect ratio of all videos at the same time line.
Looking forward to hear from you girls and guys.
Joãozinhobrazil.