H.264 marked a significant leap in video compression by prioritizing psychovisual metrics and adaptive quantization over traditional mathematical metrics like PSNR. This approach, driven by hobbyists and community feedback, focused on how humans perceive visual information, leading to dramatically better quality and reduced blurring, especially for complex scenes like those in anime or nature footage.
Impact: High. The shift to psychovisual metrics fundamentally changed video compression, making internet streaming and high-definition video feasible and visually appealing for the average user, directly impacting the quality of media consumption.
In the source video, this keypoint occurs from 02:51:08 to 02:55:17.
Sources in support: Kieran Kunhya (FFmpeg Contributor, Developer of FFmpeg X account)

