Is there any footage of the Chernobyl explosion?

Are there any documentaries on Chernobyl?

Chernobyl: The Lost Tapes, later this month, Sky Documentaries.

Was the Chernobyl disaster recorded?
When it detected unusual levels of radioactivity. Coming from the east. Two days later ukrainian authorities tried to hide the disaster.

Are there bodies inside Chernobyl?

The monument can be found between reactor 3 and 4 right where the control room used to be. The text beside his name and date of birth/date of death is translated to: The body of Valery Khodemchuks was never recovered, therefore it remains buried for eternity under reactor 4.