I've already seen this video and I think its very good.
My idea of time travel as described above would be travelling through the 5th dimension. Looking at the different paths of time. The 4th dimension, time itself, maybe we could see into our past and future, but we couldn't possibly directly travel into our immediate past or future, that would create a paradox. In fact, we are already travelling through time itself, because time is always passing, but to teleport ourselves from one point in time to another would require a fold in the 5th dimension, this would simply be moving into a different path of time, which I called a different dimension earlier, but a better term would be another plane of existence etc.
That video could be hard to understand for some people, but the key is the fold. If you folded a piece of paper around, a flatlander could instantly teleport through the 2nd dimension without being aware of the 3rd dimension, that applies to all of the dimensions that the video describes.