What's the point of no 4K TV in the ultra clear film source?

At present, almost all TVs with 50 inches and above in the market have popularized 4K resolution. If your home TV has not been upgraded to 4K resolution, it seems that it has lagged behind. However, have we really watched real 4K content? I'm afraid that most people will answer in the negative. Before answering this question, we first need to understand what 4K is.

4K is actually a video resolution standard. When the picture resolution of TV broadcast reaches 38402160, that is, 3840 effective pixels horizontally and 2160 effective pixels vertically, it is called ultra-high definition, which is commonly referred to as 4K resolution. In contrast, the resolution of full HD 1080P video is only 19201080, which is only a quarter of the 4K resolution. In addition to the common resolution of 38402160, 40962160's 4K resolution is also widely used in the digital movie field.

However, although the concept of 4K has been widely known, the 4K content we can watch is still limited. So, what factors restrict the popularity of 4K content?

To complete a 4K live broadcast or movie production, all links from recording, acquisition, production to transcoding equipment must meet the 4K standard. Compared with high-definition, 4K equipment costs more. Although recording and acquisition equipment is relatively complete, post production and transcoding need to process four times more information than full HD, and more precise editing, rendering, color blending, subtitle addition, transcoding and other operations are required to ensure the content output without delay. In addition, in the transmission link, despite the existing solutions, the stability of technology and equipment still needs to be improved, and the cost is relatively high.

Let's look at the situation of watching 4K movie sources online. At present, many Internet TV The 4K zone has been launched, but there are very few movie sources that really meet the 4K standard, and many fake 4K or 1080P movie features are mixed. It can be said that at present, most 4K TVs viewed through the network still stay in 1080P or lower definition video content.

In addition to the scarcity of film sources, network bandwidth is also an important factor restricting the popularity of 4K. Watching 4K TV programs usually requires 6M/S traffic, that is, the transmission rate per second is required to be 6M/S=6144kb/s. When converted into bandwidth, at least 50M bandwidth is required to transmit a 4K TV. Moreover, this is only a theoretical value, which may be more demanding in the actual environment. However, at present, the proportion of broadband users above 20M in China is only 21.1%, so it still takes time to watch real 4K movie sources through the network.

So, are we unable to watch 4K content? and be not so. First of all, newly bought smart TVs usually have their own content and a 4K zone. Although limited by network bandwidth and other factors, the content does not really reach 4K resolution, but it is at least 1080P, and the definition has been significantly improved compared with cable TV. Secondly, if you want to pursue higher definition, you can convert 4K film source download Watch locally. In this way, there is no need to consider bandwidth restrictions, and the picture effect will be improved compared with online video.

However, it should be noted that 4K movie files are usually large, so you need to ensure that your home has sufficient download speed and storage space, and your TV also needs to have certain encoding and decoding capabilities. Finally, if you find it troublesome to search and download resources, you can consider using 4K Blu ray player +Combination of 4K Blu ray DVD. Although the cost is high, the experience effect is absolutely worthwhile. Using the 4K Blu ray player, you can not only enjoy the real 4K image quality, but also experience cutting-edge image quality technologies such as HDR, wide color gamut, and 10bit color depth. However, the requirements for TV have also been raised to a higher level.

This article is an original article. If it is reproduced, please indicate the source: What's the point of no 4K TV in the ultra clear film source? https://tv.zol.com.cn/869/8690264.html