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For the user, selecting a video source with a higher resolution is a reasonable logic. On the PC or mobile phone, the most common highest definition is 1080P or 720P, and there are more and more 4K video sources. However, there may be users who find that the Kardon phenomenon is mostly seen in 720P and 1080P videos, but the 4K video that is openly opened is clear and smooth.
The crime of non-network: video coding technology is behind the scenes!
Can see 4K sources, indicating that your family's network capabilities have caught up with the trend of the times, then why many low-definition sources will appear Caton's situation? This started to involve a lot of technology and knowledge behind the video. Network bandwidth and film quality are important. However, many people only see the video itself and never know the role and significance of video coding.
Why do you want to encode video? I give a "little chestnut", a movie with a normal 4K resolution. After the editing is completed, the original file size is about 50TB (approximately 50,000GB). Of course, most of them are audio track files, but these are stripped. After the sound file, the file size will also reach about 1TB (1080P is about 1/3 of 4K video), so if you want to smoothly play such a movie, its network capacity should reach 250MB/s or more, and the current network layout. This is basically impossible for civil use, and the bandwidth cost of operators is also unaffordable. At this time, video coding technology is becoming more and more important.
The purpose of coding technology is to reduce the “size” of the video and fully compress the files before they can be streamed online. It is even more important that many online resources have a resolution of 4K, but the code rate However, it is far from enough. For the moment, this era of advocating visual effects still has a "plain injury."
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