For casual offline viewing on a phone, laptop, or older HD TV, a well-encoded 720p x264 at 875MB offers a satisfying balance. You’ll miss some fine fabric texture and background clarity compared to 1080p, but the film’s performances, plot twists, and direction remain fully impactful. Just be sure to source it legally, respecting the hard work of Park Chan-wook, cinematographer Chung Chung-hoon, and the entire cast — including Kim Min-hee, Kim Tae-ri, and Ha Jung-woo.