The H.264/MPEG-4 AVC compression standard used to maintain visual quality while reducing file size.
Check for of the movie if you are looking for the best viewing experience.
Oldboy (2013) 720p BluRay x264 850MB - VegaMovies patched
At 850MB, the compression artifacts smear every twist. The reveal lands with a thud, not because you don’t see it coming, but because the “patch” (likely a recoded audio sync or subtitle fix) can’t salvage the emotional gut punch that made the original unforgettable.