In an era of 200GB 4K remuxes, avatar2009blurayremux1080pavcdtshdma51 represents an efficient archive logic. It offers 98% of the visual fidelity of the 4K version (assuming a standard 65" TV) with 100% of the original theatrical audio mix and zero streaming compression.
For the collector building a "Perfect Library," this specific file is the definitive edition of the film that taught Hollywood how to use CGI, performance capture, and 3D. avatar2009blurayremux1080pavcdtshdma51
The dtshdma51 tag is the soul of this file. James Cameron is notorious for aggressive sound design. The DTS-HD Master Audio track on this Remux is lossless, meaning the explosion of the AT-99 Scorpion gunship or the screech of a Mountain Banshee is exactly what the sound editors heard in the studio. The dtshdma51 tag is the soul of this file
ffmpeg -i avatar.mkv -map 0:s:0 subs.sup ffmpeg -i avatar