This documentary examines the real nature of Jesus as believed by his followers and the Early Christian Jews. Taking a close look at early Christian history, it examines the rise of Paul's version of Christianity vs. the rival group of Christian Jews who were the followers of Jesus. The video is about 41 minutes long.
A well researched and excellently written book on this topic is "The Jesus Dynasty: The Hidden History of Jesus, His Royal Family, and the Birth of Christianity" by James D. Tabor. I highly recommend it. It's fascinating, makes a lot of sense, and is a quick read.