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> Like, why couldn't have H.266 been invented 30 years ago? Is it because the computers back in the day wouldn't have been fast enough to realistically use it?
by johnvanommen 6y ago
> Like, why couldn't have H.266 been invented 30 years ago? Is it because the computers back in the day wouldn't have been fast enough to realistically use it?
Here's something to consider:
In 1995, a typical video stream was 640 x 480 x 24fps. That's 7,372,800 pixels per second.
In 2020, we have some content that's 7680 x 4320 x 120fps. That's 3,981,312,000 pixels per second, or a 540 fold increase in 25 years.
The massive increase in image size actually makes it easier to use high compression ratios. I found this out the hard way recently, when I was trying to compress and email a powerpoint presentation that a coworker had presented on video. In a nutshell, the powerpoint doc with it's sharp edges and it's low resolution made it difficult to compress.
Increase framerate plays a factor too; due to decades of research on motion interpolation, algorithms have become quite good at guessing what content can be eliminated from a moving stream.