I was quite happy to pay what he asked and found the talk worthwhile. The subject was "Did Jesus Think He Was God?" and he approached the question from an historical rather than a theological standpoint. In other words, he did not address the theological question whether Jesus is God but the historical question whether that is what Jesus thought.
He first established that the gospels are historical documents which were written in the first century, but that with all historical documents we have to determine what is fact and what is the opinion of the author. He then considered the four gospels, Acts, the writings of Paul, and whatever (oral or written) reports they relied on when recording what Jesus said.
He asserted that it is only in the Gospel of John that Jesus claims to be God. He suggested John 8:58, 59 and John 10:30, 31 were both instances when the Jews thought Jesus was claiming divinity, and also mentioned Thomas' "My Lord and my God" response in John 20:28. So he thinks Jesus claims divinity in the gospel of John.
But then he says, what about the other historical documents, all of which were written before John's gospel. None of them have Jesus claiming divinity, or even implying it to the extent that the Jews would stone him for blasphemy. He says from an historical viewpoint this doesn't make sense. Matthew, Mark, Luke, Acts, Paul all report various things that Jesus said, but they don't report him claiming or suggesting that he is God. It is inconceivable that out of all the historical documents only one reports something of such importance. For this reason he concludes that Jesus neither said nor thought he was God or divine, and that John created those scenes to express his own theology.
Whether or not you agree with Bart Ehrman, remember that this is looking at the evidence as an historian and weighing the documents in the same way an historian would weigh any other historical documents to determine whether they were true or not.
SBF : As he was talking about how Jesus viewed himself I did not ask the question on the view of early Christians. However, he did compare John 1 and Genesis 1 (which both start "In the beginning ...") and linked "the Word" with "God said ..." which showed the Word was an agent of creation. Then, again, that was John expressing his theology.