Video codecs explained: H.264, AV1, HEVC, VVC | Lex Fridman Podcast

1. 1. Video codecs significantly reduce file size by removing redundant spatial and temporal data using mathematical properties.
2. 2. Video encoding typically requires significantly more compute power than the subsequent decompression process.
3. 3. Codecs are designed for error resilience, allowing recovery from lost data packets during network streaming.
4. 4. Codecs leverage spatial redundancy, like static backgrounds, and temporal redundancy from unchanging objects across frames.
5. 5. Modern codecs like AV1 and VVC are collections of tools, adapting compression methods to content types.