Convert Quicktime video to Web Ready mp4

Dear VWorkers, I am looking for an EXPERIENCED worker in video embedding to make a quicktime movie load on my website. I've tried converting to mp4 using Miro (which also does webm and other html5 formats) but its still too big. So we need it compressed. I've tried other encoders but the mp4 wont play. Movie can be delivered via Dropbox or uploaded directly to our Amazon s3 account. This is EASY for someone who knows what they are doing. We will not accept videos that are lower quality than what we have here, we need the highest quality possible! Thanks!