AV1 is currently the most advanced open-source video codec, designed to replace older standards like H.264 (AVC) and H.265 (HEVC).
: Delivers ~30% better compression than H.265 and up to 50% better than H.264. AV1.mp4
: Works across Chrome, Firefox, and Safari on modern hardware. ❌ Current Limitations AV1 is currently the most advanced open-source video
How to make web videos way smaller in 2025 using the AV1 codec AV1.mp4