The 35mm negative of Earthquake is notoriously grainy due to the high-speed stock used for low-light destruction shots. A 720p x264 encode handles grain adequately, but at 720p, fine detail (like cracks in plaster or dust motes) can blur into macro-blocking during high-motion scenes (e.g., the collapsing bridge). If you have a 4K TV, seek a 1080p or 2160p (4K) release instead.