There is a film called "Look Who's Back" ( or "Er ist wieder da") where Hitler inexplicably comes back after being dead for 70 years. He didn't have a Youtube channel (that I know of, I've only seen clips of the film) but he did become popular on television.
Quote:
Adolf Hitler (Oliver Masucci) wakes up in present-day Berlin, in a park where his former wartime bunker once stood, and with no memory of anything that happened after 1945. He is disoriented and interprets modern situations and things from a Nazi perspective.[3][5][7][10] Everyone he meets assumes he is an actor impersonating Hitler. He arrives at a newspaper kiosk and begins to read about modern day issues in Germany. Through these newspapers he discovers a completely different ideology from the country he left and not an ideology agreeable to his taste.
Hitler next meets Fabian Sawatzki (Fabian Busch), of the television station MyTV, who had been coincidentally filming a documentary [...] Hitler becomes a street sketch artist to earn money for the programme.
After returning to Berlin, Sawatzki introduces both Hitler and his programme idea to the MyTV station chiefs. The MyTV chairman, Katja Bellini (Katja Riemann), decides to use Hitler in one of the MyTV comedy shows. Before the show, Hitler learns about the Internet and uses the Web to learn about the modern world and prepare his return to politics. While on air, Hitler presents his old plans for world domination, but he unintentionally becomes a big comedy hit.
[...]
With the help of Bellini and Sawatzki, Hitler publishes a new autobiographical book about his new life in the 21st century, titled Er ist wieder da, and it becomes a bestseller. [...] Soon after, the book is turned into a film.
[...]
Once the work for his film finishes, Hitler senses that he is on the path to a political comeback. He is more popular than ever, and nationalist Germans give Hitler hope that Germany might be ready for his return to power.
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Life ... that's what leaves the mess. Mad people everywhere.