Can someone tell me why one avi file that is 700mb ends up being 750mb after converting it and another 700mg avi file ends up being 3.0gb+. I.ve searched the forum and can't find the answer. The smaller of the two after conversion is: Length: 134 Minutes Video: XviD AVG Bitrate: 1284 kb/s Resolution: 624 x 256 Framerate: 23.976 FPS Audio: AC3 192 kb/s And the larger of the two after conversion is: Video Codec.: XViD Runtime.......: 99 min Video Format: 2Pass 832kbits/s Audio Codec.: MPEG1 AudioLayer3 Audio Format: 134kbps VBR,48kHz Aspect Ratio: 1.85:1 Frame Size..: 640x352 Thanks!!