well, I have a very nice and highly rated(4.5) converting youtube video with about 4,456 views.. For a great amount of my niche keywords google shows (video result(2 thumbnails of vids)) I would like to appear there for my keywords. What must I do? Also I heard that google can now recognize audio of videos and rank accordingly too it. For example if there is audio of some guy talking about (anything related to niche) it will rank higher. Is this true? will the length of my video matter? thanks..