Video Script Development

Hello; I've a video site script. I add videos manuely from youtube. I just write youtube video id's when i adding videos. Firstly the script must be use with yahoo, dailymotion, google video services. Secondly i need a flash video player for my script :) Also i will publish tv series. As you know utube only provide 10 mins. So i will publish tv series part by part. On the video page there must be part1 part2 part3 buttons. And when someone clicks the buttons the video must be appear. Last thing about SEF. My urls like this : [login to view URL] I want them like this : categories/south-park/ or just /south-park