Regex Youtube Embeding and Domain Matching

YouTube domains for embedding:
(http:\/\/)?(www\.)?youtube\.com/watch\?((v=([a-zA-Z0-9_-]+))?(&?[a-zA-Z0-9_-]+=[a-zA-Z0-9_-]+))*
The video ID is $5 if v=id is the first tag, otherwise it wont match

All types of domain:
(http:\/\/)?(www\.)?[a-zA-Z0-9_-]+\.[a-zA-Z]+(\/[a-zA-Z0-9]*)*(\/?\?[a-zA-Z0-9]+=[a-zA-Z0-9_-]+(&[a-zA-Z0-9]+=[a-zA-Z0-9_-]+)*)*