Oh dear I seem to be having this problem now as well. I’m losing image quality at the beginning of my video and then I gain the quality back 5 seconds later. I tried checking two-pass and turning off the GPU option but nothing works. This only happens when I upload the video to Youtube by the way. Everything is fine when I render it and get the raw MP4 file. I am using the MainConcept Internet HD 720p template when I render it. Help please?