Bi Li supports Dolby Vision, but what's the use if I don't have the equipment?

In 2020, the video playback resolution of 4K was finally changed, which gradually kept up with the times. 202 1, Bili Bili has taken new measures and increased its support for Dolby Vision. Therefore, the highest specification supported by the company has reached 4K Dolby Vision. Some friends must want to ask, what is the use of this "Dolby Vision"?

Here is a simple popular science about Dolby Vision. Dolby Vision is an image technology introduced by Dolby Company in the United States. It can improve the contrast of the picture by improving the brightness of the picture and expanding the dynamic range of the picture, thus bringing bright contrast between light and dark. Belonging to HDR display technology.

What is HDR? HDR means high dynamic range. Usually, programs are standardized by standard dynamic range. Simply put, the range from dark to bright is limited to a certain level, which is far below the level of human eyes, but based on the current standard level of cameras and display devices. But you will think that when I watch the sun in the real world, I think it is dazzling, but the sun I see on TV is far less dazzling, because ordinary TV sets that play SDR standard pictures can't reach the actual brightness of watching the sun at all. Not only can the TV set not reach this brightness, but it also limits the brightness of the program from the level of program production.

Now, the support for uploading HDR video is to break the boundary between light and dark contrast and support video display with high brightness and high dynamic range.

If you want to watch HDR video, you must actually support the program itself, the platform that supports decoding, and the viewing device that watches HDR video. Then, if my device doesn't support HDR at all, it's no use trying Dolby Vision.

At this stage, although the answer is "yes", fortunately, mobile phone manufacturers now attach great importance to this experience. The flagship model has basically started to support the playback of high-brightness HDR video. For example, the screen instantaneous brightness of Apple iPhone 12pro can be as high as 1200nit, which is enough to cope with the display of HDR video, and this technology has begun to be decentralized to non-flagship mobile phones with lower prices.

Although many people will not deliberately change a mini LED display that supports HDR and has excellent display effect, nor will they buy a 10,000-yuan OLED TV, you will always change your mobile phone. Two years, three years, another five years, you will definitely change. The mobile phone with OLED screen has already been put on the shelves for thousands of yuan, and HDR support is only a matter of time.

Therefore, as the most active platform for mobile clients, it is prescient to support Dolby Vision one step ahead. At least among young people, it will indeed raise the upper limit of video perception earlier.

HDR content is likely to be a trend in the future. Although there are not many high-quality HDR sources at present, as long as the trend is there, your HDR equipment will not suffer. So I think even if you don't have a high-end HDR screen now, when you change to a better mobile phone, you can also pay attention to whether the configuration of the mobile phone supports HDR display.