In recent years, 4K has become more and more popular, and 4K products are gaining momentum. You can see 4K in the field of sources such as TVs and mobile phones, as well as film and TV drama sources. For one of the most commonly used office entertainment equipment, notebook computers have also developed in the direction of 4K, and formed a professional subdivision product form-high-definition audio and video books, and showed an increasing trend in 2015, showing that consumer demand is moving towards higher definition The visual presentation of the transformation.
As consumer demands change, high-definition audio and video products on the market gradually increase. For consumers, when there are too many choices, they will face the problem of how to buy, and even how to distinguish between "true and false 4K".
What is a "true 4K" high-definition audio and video book?
Speaking of "true and false 4K" high-definition audio and video books, first of all, it is necessary to clarify what is "true 4K" high-definition audio and video books. Of course, it is necessary to have 4K video playback capabilities, 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 more clarity, Realistic video quality, while reducing the video size by 40% to 50%, is conducive to the circulation and popularization of 4K video content. Whether it is 4K source storage or network 4K video playback, HEVC / H will be inseparable in the future 4K field. 265 technology.
AMD first added support for HEVC / H.265 hard decoding technology in the sixth-generation APU released in 2015. At the same time, AMD's unique VSR (visual super resolution) function can realize the screen without replacing the notebook hardware. The resolution is softly upgraded so that users can enjoy the visual experience brought by higher resolution.
We chose a high-definition audio and video book equipped with AMD's sixth-generation APU and an ordinary notebook to conduct a comparative test of HEVC / H.265 encoded 4K video playback. Through CPU utilization and actual fluency, we found that the same playback is used. When playing the same 4K high-definition video, the performance of the high-definition audio and video book equipped with AMD's sixth-generation APU is far better than that of ordinary notebooks. At the same time, ordinary notebooks have obvious stuck phenomenon. Therefore, we have reason to believe that in the future 4K popular environment, high-definition audio and video books will become one of the most commonly used playback devices for users.
High-definition audio and video books equipped with AMD's sixth-generation APU play 4K video CPU usage is 6% to 7%
The CPU occupancy rate of traditional notebooks playing 4K video is 60% ~ 70%
As for the most important picture resolution of 4K video, AMD's sixth-generation APU also has its response. The VSR (visual super resolution) function can achieve a soft upgrade of the screen resolution without changing the hardware conditions. For example, if the screen physical resolution is 1920 & TImes; 1080 high-definition audio and video books, after the VSR (visual super resolution) technology is turned on in the settings, the screen resolution can be increased to 2560 & TImes; 1440, which provides users with higher definition within the recognition rate of the naked eye. Visual experience.
Differences in 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" high-definition audio and video books?
Knowing that high-definition audio and video books have "true and false 4K", how to distinguish them has become the first problem. It is hard to decode the "true 4K" high-definition audio and video book of 4K video encoded by HEVC / H.265, and it is relatively complicated to distinguish. Because it is a technical standard, it needs auxiliary conditions. The most direct method is to play HEVC / H.265-encoded 4K video. If HEVC / H.265-encoded 4K video can be played normally, it is undoubtedly the "true 4K" high-definition audio and video book, which is the ideal choice for users who pursue high-definition visual enjoyment.
If you want to test whether your notebook is a high-definition audio and video book, we have prepared the download address of the test video for everyone (http://pan.baidu.com/s/1mhqRdiS), interested friends can download and test it by themselves .
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