Since 2014, more and more TV manufacturers have joined the battle situation of 4k TV. 4K has become one of the hottest keywords in the world. 4K TVs and 4K displays have appeared one after another with great expectations. 4K computer games, movies, TV shows News and more are appearing more and more in everyone’s eyes.
With a 4K output device, the next step is to prepare a 4K source. Many people began to download 4K sources on the Internet. But do you know? You can't find a real 4K movie on the net!
The first time you look at real 4K movies with professional equipment
Let's talk about what is "real" 4K first?
In the broad sense, 4K is only a concept of resolution, but just as people now think of 1080P, what is behind the 4K is actually.
It is an all-encompassing and brand-new viewing experience.
It is an all-encompassing and brand-new viewing experience.
It is an all-encompassing and brand-new viewing experience.
(Important points to say three times)
It is based on the pursuit of outstanding viewing experience. Here, we recommend two data metrics for 4K videos. I believe that as long as they are close to the two indicators, they can bring you videos under the interpretation of professional equipment. Shocking experience.
index:
4K30fps100MbpsH.264
4K30fps60MbpsH.265
The data indicators here mainly include four items, which are the resolution, the number of frames, the stream, and the video encoding format. Each indicator has been repeatedly tested under mature technology conditions that have been extensively marketized. It is by no means an arbitrary increase.
Popular Science Time: About 4K Resolution
As a 4K video, the first criterion to be satisfied is a resolution of 3840x2160, which is 4 times that of 1080P. If you convert to pixels, then the total number of pixels in 4K is about 8.3 million, while the number of pixels in 1080P is about 2.07 million.
Popular Science Time: About 30fps (frames per second)
Fps should be familiar to netizens who love to play games. It refers to the number of frames per second played on the screen. 30 frames per second means that 30 pictures are played in one second, and the more pictures you play per second, the smoother the picture will be. Here we set this indicator to be 30fps mainly referring to the excellent hardware and viewing experience of the mainstream playback devices in the market today.
When it comes to the hardware of the playback device, it has to mention another vocabulary - HDMI. The HDMI interface is now the most popular video transmission interface, and its transmission capability directly affects the picture quality. The 4K-enhanced version including the millet box 4K enhanced version and the Huawei glory 4K box advertised the equipment with 4K playback capability and both used the HDMI 1.4 interface for video output. The maximum output frame rate of the HDMI 1.4 interface is 30fps, so the pursuit of 60fps in one-sided does not make any sense.
Then on the moviegoing experience, the frame rate of 30 frames per second will not make people feel the Caton. It is necessary to know that the requirements for the number of frames for movies, TV series and computer games are completely different, so there is no need to be like playing games. Going too much requires higher frame rates.
Popular Science Time: About 100Mbps/60Mbps and H.264/H.265
Everyone will notice that the remaining two indicators are put together here, largely because they are closely related.
Figure 1 H.264 encoding separation diagram Figure 2H.265 encoding separation diagram
Both H.264 and H.265 are the most commonly used video encoding methods in 4K, and H.265 is an upgraded version of H.264, so it has better coding capabilities. With the same picture quality, the video size encoded by H.265 will be reduced by about 39-44% compared to H.264. The data obtained through subjective visual testing shows that the quality of H.265 encoded video can be approximated with that of H.264 encoded video in the case where the bitstream (which is explained in detail in the next paragraph) is reduced by 51-74%. Even better.
100Mbps (left) and 5Mbps (right) lower picture detail comparison
The Mbps in both standards is the unit of calculation of the code stream. DataRate (DataRate) refers to the data traffic used by a video file in a unit of time. It is also called the code rate and is the most important part of picture quality control in video coding. At the same resolution, the greater the code stream of the video file, the smaller the compression ratio and the better the picture quality. (From Baidu Encyclopedia)
Here's the key: I know you can't find a real 4K movie on the Internet!
The vast majority of movies that people can download on the Internet are all extracted from Blu-ray or DVD-distribution CDs and then compressed, whether it is HDTV, 720p, 1080p, or movies with different resolutions and stream numbers. Speaking of this, what are the clues? Due to the large file size of native high-rate 4K movies, and as the highest-capacity and most mature film distribution carrier, Blu-ray Disc, there is still no way to carry the entire native 4K movie. Therefore, everyone on the Internet can't find a real 4K movie. At best, they can only find some demonstration films and pseudo-4K movies.
In order to be able to confidently say that you couldn't find a real 4K movie on the Internet, here is a statistical table showing most of the 4K sources that can be downloaded on the Internet (a total of 148 related videos, click here) Read the original "You can find the statistics download address." - Basically all demos, no one is a true full movie.
After all, the copyright and quality of 4K movies determine that you cannot get it from online channels.
Having said so much, facing the huge temptation of 4K, can only complain?
In the existing 4K market, the vendors that can provide a complete set of 4K viewing programs can be described as extremely rare, because they require the manufacturers to have the high-end 4K player's R&D capabilities, and they must have a genuine 4K source. This means that there are hardware barriers between the consumer and the 4K movie, in addition to the source.
In the existing vendors, Xtreamer Zhuodian also provides high-end 4K players and source-based copies. It is a relatively complete 4K viewing program on the market for two reasons: excellent 4K player equipment, rich and free genuine 4K source hard disk copy service.
About Xtreamer Zhuo Code 4K Player and Its 4K Source Copy Service
First come to the appearance of Xtreamer Zhuo Code 4K player.
The Xtreamer brand was founded in the United Kingdom and is headquartered in the Netherlands. It has been focusing on audio and video consumer electronic product development for many years. It is the only high-definition player brand from Europe and the United States that enters the Chinese market. Therefore, the design style is totally different from that of domestic manufacturers. The Xtreamer Zhuo Code 4K player uses an all-aluminum shell, coupled with a drawing process, making the overall body look solid and full of texture.
The Xtreamer Zhuo Code 4K player has a large volume because it has a built-in 3.5-inch hard disk drive and supports up to 4TB of capacity, which is crucial for storing large 4K-chip sources.
The rear panel has a variety of interfaces
The excellent hardware configuration of Xtreamer Zhuo Code 4K player guarantees excellent video playback performance. Zhuodian 4K player uses an ARM Cortex-A9 Mstar9180 quad-core processor, clocked at 1.5GHz, and can support 4K video and H.265 decoding. The parameters are not prominent but very stable and for video playback processing. Targeted. In addition, with 2G DDR3 memory, 8G flash memory, to ensure the smooth playback of the 4K movies under the two sets of standards proposed previously.
With a powerful 4K player, only 4K film source "Dongfeng" was lost. Different from the previous film source distribution method, Xtreamer Zhuode Corporation adopts a hard disk direct copy method. Zhuodian has established four copy centers in Beijing, Jinan, Shanghai, and Guizhou. Users only need to mail the hard disk to the nearest copy center, and the copy center will help you copy the genuine 4K movies you want for free. In order to protect the copyright, all copies of the video can only be played with the Xtreamer Zhuo Code 4K player in a networked environment, where the network is for decryption authentication of video files.
Every month Xtreamer Zhuodian manufacturers will update the latest 4K sources purchased directly from Hollywood, which ensures the rich source. Because the 4K movie that is played on the hard disk does not need to be subject to various aspects such as bandwidth, like the online video, the quality of the 4K movie can fully demonstrate the extraordinary charm.