I really don't understand why is that necessary to ban youtube for this. This also pretty much prove that new Turkey government not been control by Islamist hive mind as the popular conspiracy theory myth suggest. And I think attacking ISIS will gain support from most of the world, even gain support within the most freedom fighter in Syria including the Kurdish nationalist freedom fighter, because most are quite suffering in the hand of ISIS.
And Turkey government cannot stop the distribution of the video even though they ban youtube, peoples can use proxy and download the video than spread it. The ban on youtube it just grow more public curiosity on the subject.