Thor: Ragnarok director Taika Waititi has opened up about the difficulties involved in assembling the Marvel Studios sequel in post-production. The film underwent a lot of cuts, with the director divulging recently that 30 minutes of jokes were added back in after Comic-Con International.

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"It was very tricky," the filmmaker explained in a new interview with CBR. "We spent a lot of time in post-production, actually, figuring that out. It's a very hard thing to strike that balance throughout two hours and 30 minutes, however many minutes this thing is, for that much time that you're engaging in a film."

Waititi elaborated that much of what made the process so tricky was finding the right space for all of the jokes, saying, "And sometimes it would be funny in the beginning of the film and then not funny at all for the rest of the film. Or sometimes it was funny in the wrong places and in the end, we had to just keep testing jokes and testing parts of the film sometimes."

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He added, "So we failed miserably and had a funny first 10 minutes and then a super-boring rest of the movie. But that's luckily why you have such a long time in post-production, because you can test all these things out and get the very best film that you can."

It's clear, however, that the failed cuts only served to strengthen the film as Thor: Ragnarok is already proving to be a massive critical success and is projected to be a commercial success with the domestic opening expected to surpass $100 million.

Opening Nov. 3 nationwide, Thor: Ragnarok stars Chris Hemsworth as Thor, Mark Ruffalo as Hulk, Tessa Thompson as Valkyrie, Tom Hiddleston as Loki, Cate Blanchett as Hela, Jeff Goldblum as The Grandmaster, Idris Elba as Heimdall, Anthony Hopkins as Odin, and Karl Urban as Skurge.