As the successor to VP8, VP9—handled through libvpx—is designed to compete with the HEVC (H.265) standard. It is widely used by platforms like YouTube to deliver 4K video while saving significant bandwidth.

WEB-DL / x264 / libvpx (Google/YouTube codec standard) Verdict: A visually stunning, claustrophobic thriller that successfully expands the film’s premise, despite occasional pacing issues.