As previously mention, Poker After Dark, Aussie Millions, EPT, WSOP, PCA coverage is all available in full on YouTube. I've personally sat through far too many hours of EPT Super High Roller events... Currently watching the Malta final table of this year.
The professionalism and strategy of high stakes EPT action makes for the best viewing in my opinion and its where you most often see the established players of the modern game.
There is also plenty of videos provided by the burgeoning amount of pros creating content via the poker streaming community. Jaime Staples of StaplesPoker, in particular, offers very good commentary on why and how he's making decisions as he plays. Plenty of popular poker streamers fall too easily into the annoyingly enthusiastic cohort of mainstream Youtubers but if you view the content just for the pro strategy then its worth a look.
PokerStaples - Daily content from PokerStars
Team Online Pro Jaime Staples
EPT 2016 Malta - Super High Roller Final Table