MattZ
YouTube Networks Addict!
I don't understand your point, I can place long pre-roll ads on my 10-15 second videos. It doesn't make a difference, as long as the like ratio is good they will come. But do longer videos have higher cpm!?
Even if they did have higher CPM's (video length does effect your CPM) , that will be counter balanced by the fact 2 videos would = near twice as many views therefore your CPM would have to = double to make up for that, that's without even mentioning that audience retention effects your CPM and 2 shorter videos will most likely have a higher retention.