It looks to me like frequency strobing caused by the shutter speed clashing with the frequency of the (fluorescent) lighting.
However, perhaps it's too general for that. Is it on the original footage, or just the render?
it's the original video =(
I fear that it probably is frequency strobing. I don't know of a PP way of countering it.
Ideally you need to reshoot at a different shutter speed.
The frame rate is out of sync with the lights. There's not much you can do except give color stabilizer a try unless you spring for a 3rd party solution. Some work well, it all depends on the shot.
The best is probably this:
Unfortunately, no AE version of the tool is available and the solution would be very expensive.
Flicker Free from Digital Anarchy is a good one for AE.
The first option is very expensive, the second is much more affordable.
Color stabilizer works wonders but not miracles.
Frequency-specific luminaires include fluorescents and certain pressurized gas systems. As your location video experience broadens, you will learn to look around for these lighting products, shoot and carefully review some test footage, and understand how to compensate. If the local mains is 60Hz, you must use a shutter speed that is longer than 1/60th second to guarantee your shutter is open across more than one cycle.