Here is the first ten minutes http://youtu.be/UEuOpxOrA_0

Can anyone explain what's happening at about 1:20, where you can see a faint image of the rocket, it's trail, and then what looks like a clear image of the inside of the rocket nozzles WAY back (and farther apart than they really are)? At first I thought this might just be a focal point of the exhaust, but it's not just a point of light. Is this some known optical effect, or is something else going on here?

*fire

Adding video to channels (Fire) - requested by ant.

I'm in no way sure of this but i suspect its an effect of looking at it at extreme range.

It's viewed at a very long range, through fog and clouds. The perspective is because of the very long range, and the image is very dimmed because of the cloud cover.
The image is underexposed, and therefore we can only clearly see the very brightest part of the image, which is the flames inside the thrusters - that part is hidden in severely overexposed flare blooms in all the other recordings. The rest of the rocket is barely seen through the clouds, and would have been a bit more visible if the image had a lighter exposure, but then the nozzles would have been bright blooms, and we wouldn't have been able to see any details inside.
If you look closely, you faintly see not only the spaceship, but also the huge flickering flame columns behind the nozzles.

Hmmmm. So the thing that looks like the rocket is just the tip of the rocket, and the thing that looks like the flame trail is the rest of the rocket shrouded in clouds/vapor? Interesting, looking close I see you are likely correct. But then what makes the nozzles look farther apart than they appear on the ground?