javascript - Grabing video and image from a html page -

i'm working on bookmarklet in javascript grab images , videos html page. grabbed images like,

$('img', $('body')) 

now want grab videos embedded in web page different sources youtube, vimeo, dailymotion etc., can give idea how achieve sample javascript code?

note: need links of embedded videos external sites.

youtube example lets embed videos either <object> tag, old version, or iframe. vimeo gives embedded video in iframe, too. selecting <iframe> , <embed> elements can video links them selecting them following code:

var videos = $('iframe, embed'); 

edith: actual video link in src tag, both iframe , embed object.