Hello, I am new to Mpeg structure. I use TMPGEnc and I changed the GOP structure from I=1 P=5 B=2(standard) to I=2 P=3 B=1. Is there anything wrong with this? I checked the amount of space they take up and it is the same. Also, to me, it looks like the change I made looked better. Can someone help me understand GOP structure and tell me if what I did is for the better or worse. Thank You! Also, when I encoded standard GOP it took 1:48 sec. while my own way took 1:43 sec. to encode the 1:43 sec. segment!