Let’s look at specific scenes that justify the search for the high-quality Bluray:
The film is a tapestry of:
The dreamlike romantic song "Hamsa Naava" features a flying ship amidst bioluminescent clouds. In 1080p HQ, the blending of CGI and practical lighting is exceptionally smooth.
A proper (x264 or x265 codec) preserves film grain (where applicable) and maintains sharp edges without "banding" in the sky or water backgrounds.