Originally Posted by ginetto
The Vimeo is still processing the video.. You can see this other video recorded with #11 version 2.
Here, I had the same problem but smaller.
I do not think it a problem of battery, because the noise (a brighter area on the right) became visible after 2 minutes and it increases for +1 hour.
OK, After seeing that I agree it's not the low voltage breakdown, which results in a very jagged breakdown in the picture edge and is accompanied by an intermittent buzzing sound. The image breakdown and buzzing gets worse as the battery becomes more and more depleted.
I think the most plausible cause is mentioned in Isoprop's post, but this doesn't happen in bright light outdoors on a hot sunny day. Indoors in low light such as your example makes the CMOS imager work a lot harder, though, both in long electronic shutter times as well as boosted gain on the CMOS, both of which should generate more heat, I think. But why that would affect the right side of the CMOS more than the left is a bit of a mystery, unless it's because the DSP chip also generates a LOT of heat and it resides on that side of the circuit board and is contributing to the heat issue on the imager.