There are a number of very fundamental errors in the claim that people (including Buddhists monks and the Buddha himself) will end up in hell merely by not believing in Jesus and an almighty creator-God. The maker and narrator of the video clearly indicate that people, no matter how virtuous they were, go to hell for not believing in God. It appears that merely "believing" in Jesus is the key to heaven (and avoid hell).
The first error is this: Even the devil and demons believe in Jesus and God! It is stated clearly in the Bible, [James 2:18-20] where James said: "You believe that there is one God. Good! Even the demons believe that...and shudder". So demons believe in Jesus and yet it did not help them.
In Matthew 8:28 it is told that Jesus restored two demon-possessed men. It is said that: "when he arrived at the other side in the region of the Gadarenes, two demon-possessed men coming from the tombs met him. They were so violent that no one could pass that way. “What do you want with us, Son of God?” they shouted. “Have you come here to torture us before the appointed time?”
Clearly, the demons recognized and believed in Jesus as the "son of God" and yet again, their believe did not help them.
Unlike so many claims that merely believing in Jesus saves a sinner form hell, the Bible itself tells us that this is a gravely mistaken view. So to begin with, the maker of the video is very seriously mistaken. On the one hand he promotes Christianity and yet on the other hand, he shows very little knowledge of Jesus's teachings.
In fact he shows very little understanding of Buddhism as well. To begin with, all real Buddhist know that Buddhism is not about worshipping the Buddha.
Buddhism is non-theistic, that is, it does not teach the existence of a supreme creator god or depend on any supreme being for enlightenment. Buddha is a guide and teacher who teaches the way out of Samsara (never mind hell). All Buddhist practitioners should know that.
The contents of this video is so seriously flawed and should only be accorded it's rightful junk status. Buddha has no need to answer nor do Buddhists. Instead the words of the irrefutable saint by any religion, Mother Theresa, should suffice when she said:
"It is not enough for us to say: 'I love God, but I do not love my neighbour.'