I see that we have a play button in information panel "F11" for preview. I dont want to open a external program to do it because needs to be fast to check dozens of files.

Is it possible to set a shortcut for this button "play", or have a solution like gnome-sushi previewer in Nautilus? (there we pressed the Spacebar key for this)

http://imgur.com/Oy5kxQA