I often watch YouTube through Chromecast on my TV. The ads are not skippable and cause all sorts of problems for the video that plays afterward (out-of-sync and stuttering). A few months ago, they put up a 30-MINUTE ad. If they think I am going to suffer through a 30-minute ad before watching a 7-minute video, well they would best think again. I wound up shutting the whole thing down and starting over and researching ways to block ads on Chromecast.