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In this comparison test, we chose a high-definition player product. This is because only the player that supports both AV interface and 1080p full-HD signal is the only type. Blu-ray player is the most stable playback system for full-HD signal transmission. There is no older AV and component color difference on the camera body. High-definition player is not as good as Blu-ray in the processing of full-HD images, but it is easier to compare the picture quality of AV/Component/HDMI interfaces. So we selected high-definition players with these three interfaces for testing. 
The basic method of this test is to display the same picture after connecting the flat TV with AV, component color difference and HDMI. Through real shots, the difference between the three connection modes is directly reflected. For the sake of fairness, the resolution of all test images was unified to 1920×1080, and the camera's shooting parameters were the same. No post-processing was performed. 
For the test video, we chose four videos with different resolutions. Among them, Kung Fu Panda is a full HD version of H.264 encoding, WALL•E is a 720p (MPK) version (.MKV), and the eternal sunshine of the tough guy and the beautiful soul is the Internet download movie. For AVI and RMVB files.
HD picture showdown
The first thing to do is to compare and test HD pictures. 
In the color test, the performance of the component and the HDMI is also excellent. The difference from the shadow test is that there is almost no difference between the component and the HDMI in the color test, and the same accurate and colorful reproduction is achieved. The AV interface is still unsatisfactory, and the output can only be considered “viewable,†but the graininess is obvious and the color is dim. 
The above two sets of pictures are detailed comparisons, in which the components and the HDMI display are relatively rich in detail, whether it is the veins of the petals or windows of the house, brick seams can be displayed, and the performance of the AV interface is still poor, the lack of details is more serious.
Through high-definition picture test, it can be seen that the component and HDMI have no difference in displaying high-resolution images. HDMI does not show obvious advantages, and the high-definition pictures transmitted through the AV interface not only have the sharpness, color, and details better than the first two. Poor, there is also a problem of imbalance, the effect is not very satisfactory.
Online movie showdown
The AV interface can be said to be defeated in the high-definition picture test, then is the performance in downloading the movie that the clarity originally not high is satisfactory? Please wait for the test below. 
Above is the AVI format download video movie tough guy real shot, the source of the clarity of the film reached about 480p level, belonging to standard definition, AV interface performance has improved, and the difference between the component color and HDMI narrowing, in addition to color saturation Apart from the details, the three have basically maintained the same level. 
The eternal sunshine definition of the beautiful soul is worse than that of the tough guy. The RMVB format is also one of the mainstream formats for downloading movies on the Internet. In the case of very low definition, there seems to be no better way to achieve the most advanced HDMI. The images output to the 52-inch LCD TV are very rough, and there is no problem in reading the story, but there is no visual enjoyment.
The above is the result of two network download movie tests. The AV interface is basically sufficient to meet the needs of the network movie output with low resolution. Although it is still worse than component color difference and HDMI, there is no essential difference. Obviously this test did not exert its weight and HDMI level, the following HD test may reveal the answer.
High-definition movie showdown
The following HD/Full HD movie effects test did not join the AV interface, because the transmission method can not assume the transmission of high-definition signals, and playback devices equipped with AV interface do not have the ability to play high-definition video files, visible high-definition signals and AV basic "Drawing boundaries." So only arranging the component color difference and the HDMI duel, we immediately look at the difference between these two most current mainstream transmission methods. 
WALL·E is a 720p HD movie. The clarity of the source is higher. The component color difference and HDMI performance in the test are excellent. No matter whether the color reproduction or the detailed performance has reached the requirements of high-definition movies, the definition is almost. There is no difference, HDMI is slightly better in brightness contrast and color temperature control, it seems more natural light effects, the sharpness of the component performance is remarkable. 
When playing the 1080p version of the Kung Fu Panda, the component color difference performance is also very good, if there is no HDMI analogy, it can give the viewer full HD visual enjoyment. The performance of HDMI should be strengthened. In addition to the advances in color, detail, and contrast, the fluency level is also better than the component color difference. Component color aberration will appear in the fast movement of the lens, and HDMI will have a lot of smoothness.
Competing summary:
Concerning the results of this comparison test, I believe that without the author saying that your heart has also been judged, AV interface as the most "old" signal transmission interface in the HD into the mainstream today can not help but somewhat behind, the image quality is not guaranteed, but in the transmission The effect of low-resolution images is similar to that of components and HDMI, and it is acceptable. Therefore, if you often watch movies downloaded from the Internet, you may consider using the AV interface. The component interface can basically meet the transmission requirements of the general high-definition signal, even if there is no obvious difference compared with HDMI, so if it is not high-definition audiophile, it is not necessary to replace the playback device in the home for HDMI connection. Of course, the performance of HDMI in the evaluation is the most perfect, and it is also the best solution for HD transmission at present, and no additional audio cable is required. If you buy a flat-screen TV and you are looking to add HD playback devices, a player with HDMI output should be the first choice.
The results of the evaluation further confirm the point of view at the beginning of the article that HD is a system that integrates playback, transmission, and display rather than a single device. For example, even if you have a FULL HD resolution flat-screen TV and high-definition player connected with HDMI, but playing a low-quality movie downloaded from the Internet, the effect of connecting with AV mode is similar. Therefore, users must take into account all aspects of the requirements in order to truly enjoy the visual impact and sensory enjoyment brought by high definition images.
advantage:
a. Compared with the traditional Office Projector, the internal structure of the home 3D projector is simpler and the volume is much smaller, which is convenient to move and carry.
b. It can bring a better viewing effect to the user, and its large screen can bring a certain visual impact to the user.
c. Compared with traditional projectors, home 3D projectors have more advantages in the color of the picture, which can reach 120% of the NTSC color gamut, and the colors are rich and diverse.
Playing HD interface is very important for the three major connection methods
Test platform introduction For the test TV, we chose Toshiba's latest flagship product, the 52ZV550C LCD TV, which is a relatively high-level technology in the current LCD TVs and can guarantee the accuracy of the test. The reason for choosing 52 是 is that the bigger the screen, the higher the requirement for the signal, and the more intuitively the difference between the three connection modes. Want to understand this product's friends can see: a new generation of flagship debut! Toshiba 52ZV550 HD evaluation.
Test Methods:
In the comparison of the dark scene images of the three groups, the AV interface is obviously poor, and the light restoration is not natural enough. The component color difference is relatively close to the HDMI, and the HDMI grasps the details of the dark part more delicately.
Left: Component color difference; Right: HDMI