After several years of development, the 4K high-definition industry has made great progress. Regardless of whether it is hardware or software, it has gradually become popularized. 4K TV, 4K HD box has entered the home of ordinary people this year, the price is also very affordable, 300 yuan can buy a box to support 4K playback, 3000 yuan can also buy a 4K resolution TV. However, without 4K resources, these 4K boxes and 4K TVs have no real meaning at all.
Fortunately, there are already Internet TV licensees starting to launch online services to play 4K video resources! Then the question is, these online 4K video is true 4K video? How much higher than the current 1080P, 720P online video clarity? If you compare with 1080P Blu-ray original? With the above questions, the author did a test. This time, the data is not objective, there is no data support such as image quality, and only the eyes of everyone have to do this evaluation, so the evaluation results will be quite subjective.
Simply introduce the test method, first randomly found 7 volunteers, respectively, the original Blu-ray disk VS online 4K, online 4KVS 1080P, online 4KVS 720P, online 4KVS low rate version of 720P, see the human eye can directly distinguish Different resolution video. The test uses the same TV cool open A55 with a resolution of 4K. The test process will close the video sound and avoid the subjective interference caused by the difference in sound quality.
In fact, the original idea of ​​the author was online 4K vs Blu-ray 4K, but ironically the 4K video publishers in the online 4K area did not publish 4K resources...SO, where did these 4Ks come from? Tested again.
Video resources
By the way, this online 4K resource comes from Mango TV. (The box with the mango TV theory can be found in the “Movies†column). I chose three movies that everyone is familiar with, namely, Impossible 4 and the death squads. 2 and special forces: The rise of Cobra, download the video format, resolution, capacity as shown in the table below.
The player used this time is the Mango Q5 quad-core, the TV is the Cool-on A55, all TV parameters are default, and the player's output resolution is 4K. During the test, all volunteers must not exchange opinions and must not influence other volunteers. The author also turned off the video's voice to stop the influence of sound quality on the volunteers. Ensure that the data can directly reflect the true feelings of the corresponding volunteer when the environmental variables are unchanged.
Test Method: The same clips were compared using online 4K and video with different resolutions. The volunteers marked videos that were clearer and better for him. Finally, all the results were counted.
Blu-ray original VS online 4K
The author's comments: In addition to the higher definition, the details of the dark part of the blue disk ISO are better than the online 4K, the dark part of the online 4K noise is more obvious, and the displayed content is not rich in the Blu-ray original disc. There is also a certain difference in contrast and color.
Online 4KVS 1080P MKV
Editor's comment: The gap has gradually begun to shrink, some volunteers have begun to distinguish the difference.
Online 4KVS 720P
Test Method: The same clips were compared using online 4K and video with different resolutions. The volunteers marked videos that were clearer and better for him. Finally, all the results were counted.
Blu-ray original VS online 4K
The above is the order of test video clips. Volunteers did not know the play order. After the 6 clips were tested, the author informed them of the real answer. The following is the test result of Blu-ray original VS online 4K.
The Blu-ray original ISO contrasted with the online 4K section. Four volunteers were all right. Two volunteers each missed one segment. One volunteer missed two segments. The results in this section are quite obvious, and most volunteers can tell that the clarity of the Blu-ray disc is clearer than the online 4K video.
The author's comments: In addition to the higher definition, the details of the dark part of the blue disk ISO are better than the online 4K, the dark part of the online 4K noise is more obvious, and the displayed content is not rich in the Blu-ray original disc. There is also a certain difference in contrast and color.
Online 4KVS 1080P MKV
This is a comparison of the online 4K and high bit rate versions of 1080P. The test titles are the same, but the clips are different. The volunteers do not know the playback order. The following are the results of the online 4K VS 1080P MKV test.
In this test, only three volunteers could identify the correct answer. The other three volunteers were all wrong. The two groups were also the same volunteer.
Editor's comment: The gap has gradually begun to shrink, some volunteers have begun to distinguish the difference.
Online 4KVS 720P
Also intercepting new clips for comparison, this time is a comparison of online 4K and high bit rate 720P. The following are the test results.
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