Why do 4K videos on 1080p monitor look better than 1080p videos on 1080p monitor? The monitor displays the same amount of pixels in both cases, doesn’t it?
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Compression of data. Uncompressed 1080p looks great, or you can get 4k video that is downgraded to fit a 1080p monitor to get the same effect. Freeze frame any video and look right at the pixels up close. The squared, blocky pixellation is compression.
The hard answer is chroma subsampling.
That means video typically has more resolution in the luminosity part of the video than the color information
So a 1080video has less than 1080 information in the color part of the video. Only a 4k video can saturate a 1080 display.
Also, 4k video has higher bandwidth and a more modern video codec.
Filmmaker / film lecturer here: Really simple terms 99% of all digital video is compressed in way that saves space, so it has fake pixels that take information from other pixels to save data and make a smaller file (colour / orientation etc) it does this in each single frame, and over a series of frames.
HD video there’s already less pixels (about 2.5 times less than 4k) so this data saving method is more apparent with less pixels (more guess work) than 4k which has more pixels to do the data saving guesswork, which makes it a bit more accurate / better looking.
Thats the end of ELIF, if you want to know more look up “long GOP” (group of pictures), spatial / temporal compression and the most popular online video format, h264. That’ll explain in a bit more depth how it works.
It’s a bit rate thing. At least in the context of youtube, I’m not sure how other sites work
Compression of data. Uncompressed 1080p looks great, or you can get 4k video that is downgraded to fit a 1080p monitor to get the same effect. Freeze frame any video and look right at the pixels up close. The squared, blocky pixellation is compression.
Compression of data. Uncompressed 1080p looks great, or you can get 4k video that is downgraded to fit a 1080p monitor to get the same effect. Freeze frame any video and look right at the pixels up close. The squared, blocky pixellation is compression.
The hard answer is chroma subsampling.
That means video typically has more resolution in the luminosity part of the video than the color information
So a 1080video has less than 1080 information in the color part of the video. Only a 4k video can saturate a 1080 display.
Also, 4k video has higher bandwidth and a more modern video codec.
The hard answer is chroma subsampling.
That means video typically has more resolution in the luminosity part of the video than the color information
So a 1080video has less than 1080 information in the color part of the video. Only a 4k video can saturate a 1080 display.
Also, 4k video has higher bandwidth and a more modern video codec.
Filmmaker / film lecturer here: Really simple terms 99% of all digital video is compressed in way that saves space, so it has fake pixels that take information from other pixels to save data and make a smaller file (colour / orientation etc) it does this in each single frame, and over a series of frames.
HD video there’s already less pixels (about 2.5 times less than 4k) so this data saving method is more apparent with less pixels (more guess work) than 4k which has more pixels to do the data saving guesswork, which makes it a bit more accurate / better looking.
Thats the end of ELIF, if you want to know more look up “long GOP” (group of pictures), spatial / temporal compression and the most popular online video format, h264. That’ll explain in a bit more depth how it works.
Filmmaker / film lecturer here: Really simple terms 99% of all digital video is compressed in way that saves space, so it has fake pixels that take information from other pixels to save data and make a smaller file (colour / orientation etc) it does this in each single frame, and over a series of frames.
HD video there’s already less pixels (about 2.5 times less than 4k) so this data saving method is more apparent with less pixels (more guess work) than 4k which has more pixels to do the data saving guesswork, which makes it a bit more accurate / better looking.
Thats the end of ELIF, if you want to know more look up “long GOP” (group of pictures), spatial / temporal compression and the most popular online video format, h264. That’ll explain in a bit more depth how it works.
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