I've always rendered to mpg2 including both video and audio. Now I have a hd (avchd) video camera. I tried to render to sony mp4 bluray 1920x1080 60i (.avc) and the audio to .ac3 but I can't get the video to play. I don't understand how to render this type of video and rendering the audio seperately. I want to have it in hd to view on my computer and also burn to bluray. I also need to know how to render it for my son to post it on his facebook page on the internet. So I would need to render it two different ways. Any help is appreciated. Thanks