istockphoto for videos I am thinking about make some story video and I would leverage some general footage -- timelapses, cars passing streets, etc. Is there some service which provides such assets? I think I saw something like "video building block" service or something like that. I don't need this service specifically, but just something where could I download/buy such video assets shoot by somebody else.
http://www.gettyimages.de/footage
https://www.shutterstock.com/video/
http://www.dissolve.com/
http://videohive.net/


to name a few, probably there are much much more.