I found it to be noisy even at ISO 400, 800 is barely usable, red filter may not be that useful as it reduces the light that can reach the sensor.
Continuous AF is bad so I turned it off and use pre-focus instead. MWB is generally good down to 15-20m.
Here is the screen capture of one of my clips.
ISO 800, MWB, a lot of chrominance noise even after using neat video.