In these prophecy videos the fellow is always quoting The Book of Daniel (OT) and The Revelation of Jesus Christ (NT). These writings of the Bible are very hard to interpret and interpreters have for centuries wrestled to understand some portions of these biblical writings. Bible interpreters call these writings apocalyptic literature.
I personally believe that there is taught in the Bible the end of this present evil age. I believe in the Return of the Lord Jesus Christ at the end of this age. Now what are all the events that will take place on earth before the Lord's return is unknown. But it does say for example in 2 Thessalonians "Let no one deceive you by any means; that Day will not come unless the falling away comes first, and the man of sin is revealed, the son of perdition, who opposes and exalts himself above all that is called God or that is worshiped, so that he sits as God in the temple of God, showing himself that he is God" 2 Thess. 2:3,4. The Bible talks about "the man of sin" of the "son of perdition" that will be seen in the Last Days. Now is this a real man or any world leader that exalts himself above the rule of God "who opposes and exalts himself above all that is called God"? The text says this man of sin "sits as God in the temple of God". We know there is no temple of God on earth only in the spiritual realm. Maybe what these verses are talking about is that in the Last Days there will manifested false religion/false prophets/ what is known as antichrist. We read in First John "Little children, It is the last hour; and as you have heard that the Antichrist is coming, even now many antichrists have come, by which we know that is is the last hour" 1 JN 2:18.
What I would emphasis when talking about the Last Days is very simple. I would quote from the Bible that tells us how we are to live in the light of the end of this present evil age. What I am concerned about as a Christian is not seeking to interpret in great detail the Book of Daniel but Christian ethics. How are we to live in the light of the Second Coming of Christ. I am concerned about Christian holiness. Let's talk about practical godly living. We read in Second Peter, "But the day of the Lord will come as a thief in the night, in which the heavens will pass away with a great noise, and the elements will melt with fervent heat; both the earth and the works that are in it will be burned up. Therefore, since all these things will be dissolved, what manner of persons ought you to be in holy conduct and godliness, looking for and hastening the coming of the day of God, because of which the heavens will be dissolved, being on fire, and the elements will melt with fervent heat? Nevertheless, look for new heavens and a new earth in which righteousness dwells" 2 Peter 3:10-13.