If you have only seen the Theatrical Cut on Disney+, you have not seen Avatar . The Extended Cut is the director's true literary version.
If you own a standard 4K TV and a Blu-ray player, this 1080p disc upscales beautifully. Because the movie was rendered at 2K digitally (the CGI native resolution is 2K, not 4K), upscaling a high-bitrate 1080p source to 4K actually looks identical to a "fake" 4K master. Avatar - Extended Collectors Edition -2009- 108...
Technical and Narrative Analysis: Avatar - Extended Collector’s Edition (2009) The Avatar: Extended Collector’s Edition If you have only seen the Theatrical Cut
The longest version, adding 16 minutes to the theatrical runtime. Key Scenes in the Extended Cut Because the movie was rendered at 2K digitally
Includes 9 additional minutes of footage originally shown in theaters in August 2010. Collector’s Extended Cut (178 mins):