Hulu’s “Confidential” Ad-Selector Specs Leaked; YouTube Adopts Mandatory Pre-Rolls.

Just when you thought pre-rolls were dead, both Hulu and YouTube are embracing them in recent weeks. Hulu has officially rolled out an “Ad Selector,” where viewers can choose among several ads from a single sponsor. And YouTube, whose parent Google once chastised online-video pre-rolls for causing 75% abandonment rates, is now quietly experimenting with…