: A 4K Remux is a "remuxed" copy of a physical Ultra HD Blu-ray disc. It takes the original video and audio streams and places them into a container (usually .MKV) without re-encoding them.
Streaming services almost always compress audio to save bandwidth. You might get Dolby Atmos on Netflix, but it is delivered in a lossy format (often Dolby Digital Plus). 4k remux movies
A: A fan-made file that takes the video from a 4K disc (high bitrate) and syncs it with the audio from an older Blu-ray (if the 4K disc has a bad mix) or syncs it with Dolby Vision from a WEB-DL. These are popular for movies like Terminator 2 (where the 4K disc has excessive DNR). : A 4K Remux is a "remuxed" copy
The catch with 4K REMUX files is size. Because no compression is applied, the files are enormous. You might get Dolby Atmos on Netflix, but