I came across this video of a kid whose Dad is a special effects person. The video is remarkable.
I researched more about this and realised that this is a part of a very impressive YouTube channel called Action Movie Kids (https://www.youtube.com/channel/UC2hAbftpVjHtFrDOpEM90aA)
My quest for knowledge on Augmented Reality (AR) led to this but what is remarkable is that most of the effects shown here are done using Adobe After Effects.
If with conventional toolsets available in a 2D software, so much could be done, imagine the possibilities using AR. I think all these are good signs for an immersive experience while watching videos/movies in future.