My computers are win7 and EDIUS 5.0. I think there is something wrong with your QuickTimeH264. . Hh 264 is a universal QuickTime coding. Although I don't know what format you output, there seems to be something wrong with your QuickTime. You can try to reinstall QuickTime alone, and you can continue to ask questions. If yours is HD, you'd better render it. I've collapsed before. Personally, I think you'd better finish the work as soon as possible. I suggest you output 3 points, then output 3 points, and then make an analogy before splicing, and then analyze and solve the problem. 2 Recommended direction, 1 QuickTime reinstall and install all the auxiliary decoders of Edius. If the material is connected too much, you can delete points by connecting the sections of the material library. Just try it. After all, I don't know much about your specific information.