Hi all, This is my first post on this site, though have been using this site for tutorials since long time. I am a student in Computer Science planing future in graphics. I have been trying to write a code to create AVI files from sequence of images. The avi tutorial was quiet helpful in understanding avi files, but not exaclty wahat i wanted to do. After lots of search thruogh net and trial and errors, i am now able to create AVI files. However, speed is a problem. Can you help me with couple fo questions. 1. If u know any tutorial which teaches us to do that, efficiently? 2. To add a frame to avi it take like 4-5 seconds which is pretty slow. The sequence of calls i am making is : AVIFileOpen AVIFileCreateStream, AVIMakeCompressedStream, AVIStreamSetFormat AVIStreamWrite (this last call in loop). Is there any step where i need to setup some parameters to speed up? hope to hear from u guys. bye, jitu (freemind)