In recent years, the 4K heat has intensified, and the 4K products are gaining momentum. From the playback equipment such as TV and mobile phones to film and TV series, you can see 4K. For one of the most commonly used office entertainment devices, notebook computers have also developed in the direction of 4K, and form a professional subdivided product form - high-definition audio and video books, and in 2015 growth, showing that consumer demand is moving to higher HD The visual display changes.
As the demand of consumers changes, the high-definition video and audio products on the market are gradually increasing. For consumers, when they choose too much, they will face how to buy, and even face the problem of how to distinguish "true and false 4K".
What is the "true 4K" HD video book?
When it comes to "true and false 4K" HD video, then we must first define what is "true 4K" HD video. Of course, having 4K video playback capability is a must, and the most important thing is to support HEVC/H.265 hard decoding technology. Compared with AVC/H.264 technology, HEVC/H.265 technology can provide users with clearer, Realistic video quality, while the video size is reduced by 40%~50%, which is conducive to the circulation and popularization of 4K video content. Whether it is 4K source storage or network 4K video playback, it is inseparable from HEVC/H in the future 4K field. 265 technology.
AMD added support for HEVC/H.265 hard decoding technology for the first time in the sixth-generation APU released in 2015, and AMD's unique VSR (Visual Super Resolution) function enables the screen to be realized without replacing the notebook hardware. Soft resolution upgrades allow users to enjoy a visual experience with higher resolution.
We chose a high-definition audio and video book with AMD's sixth-generation APU and a normal notebook to carry out HEVC/H.265 encoding 4K video playback comparison test. It was found through CPU usage and actual fluency, using the same playback. When playing the same 4K HD video, the high-definition audio and video performance of AMD's sixth-generation APU is far superior to that of ordinary notebooks. At the same time, ordinary notebooks have obvious stuttering phenomenon. Therefore, we have reason to believe that in the future 4K popular environment, HD video will become one of the most popular playback devices for users.
High-definition video and audio playback with AMD's sixth-generation APU, 4K video CPU usage is 6%~7%
Traditional notebook playback 4K video CPU usage rate is 60%~70%
For the most important screen resolution of 4K video, AMD's sixth-generation APU also has its own solution. The VSR (Visual Super Resolution) function can achieve soft upgrade of screen resolution under the same hardware conditions. For example, the screen has a physical resolution of 1920 & TImes; 1080 HD video book, after setting VSR (Visual Super Resolution) technology in the settings, the screen resolution can be increased to 2560&TImes; 1440, providing users with higher definition in the naked eye recognition rate. Visual experience.
The difference between the screen resolution setting options before and after the VSR function is enabled (left: VSR is not enabled; right: VSR is enabled)
How to detect "true and false 4K" HD video books?
I know that high-definition video and audio have "true and false 4K" points, how to distinguish it has become the first problem. It can solve the "true 4K" high-definition videobook of HEVC/H.265 encoded 4K video, which is relatively complicated to distinguish. Because it is a technical level standard, it needs auxiliary conditions. The most direct method is to play HEVC/H.265 encoded 4K video. If you can play HEVC/H.265 encoded 4K video normally, it is undoubtedly the "true 4K" high-definition video and audio book, which is the ideal choice for users who are looking for high-definition visual enjoyment.
If you want to test whether your notebook is a high-definition audio and video book, we have prepared a test video download address for everyone (http://pan.baidu.com/s/1mhqRdiS), interested friends can download the test themselves .
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