GH4 Any way to get HDR video from gh4?

[R Hudson]

it would increase the Dynamic Range as well, technically, I think. Give you more stops up high and down low, am I right?

Essentially, yes. Do a search for "5dmkiii hdr video" and you can see some interesting examples.

 

[ukfilmer]

it would increase the Dynamic Range as well, technically, I think. Give you more stops up high and down low, am I right?

Well that is what High dynamic range means... so yes.