Link me one page like that and I will check.
I'm browsing several pages with embedded videos and I'm not experiencing all the crashes your are speaking of ....
Actually I had a couple of crashes since iPad air purchase and ZERO with my iPhone 5S.
What in an say is that Mercury Browser is much better, and it can load several,tabs without reloading, while Safari cannot.
Safari surely has memory leaks.
But I cannot see all these crashes you are speaking about, and I'm using my iDevices very very much.
For me t ALWAYS happens, in the above situation, when using any of a ton of different messages boards from - http://www.invisionpower.com - that allow embedded video.
I'll try finding you some others. Other people have pointed out problem sites, but the response has always been "poorly written site". So I'm not sure what you would accept.