This does not appear to be a reflection from lights inside the aircraft, but with nighttime video shot through reflective material like this, it is difficult to be certain. Nevertheless, the probability exists that this is an unknown object.
From Indonesia to India, there has been a wave of UFO sightings over Asia, and now this story appears in the Vietnamese English language press. Obviously, I cannot evaluate these reports, and the photo looks like a meteor, but still, they could represent an extension of the high levels of activity in the area.
This spectacular light show took place over Santiago on the night of December 18. What was it? Certainly not an aircraft. However, it could have been a fleet of balloons carrying flickering LED lights. Once, it would have been hard to generate enough luminosity from lightweight devices to create such a light show at this level, but that is no longer true. Still, this is a possible unknown.
This appears to be an ordinary lenticular cloud, except for that steadily glowing ring at the base. To be shaped like that, a plasma would need to be generated artificially, and, in any case, no naturally occurring plasma would remain stable for more than a few seconds. One other explanation is that the cloud is being lit from below, but there is no indication of any large lighted area under it, such as a stadium with a ring of floodlights. Lastly, it could be lit from within. If so, then what would be in it?