Hello, I’m trying to figure out if certain videos found on youtube/vimeo (example: http://www.youtube.com/watch?v=2B4i6fgCprQ ) are allowed to be used in your video preview. Any insight on this would be awesome. Thanks.
It all depends on license. if license allows it- you can use it. Not sure about Youtube licenses, but Vimeo has great collection of videos licensed under CC BY license: