From the end of the 19th century to the 1950s, because the aspect ratio of the movie was maintained at 1.33 for a long period of time (which is similar to the current screen ratio of 4:3), it entered the late 1950s and the rise of the television industry was facilitated. The traditional movie picture was put on the TV, and it also used a 1.33 aspect ratio, which is the origin of the 4:3 aspect ratio.
However, as people study ergonomics, it is found that people's field of vision is actually a 16:9 rectangle, so many movie screens gradually start to adopt the 16:9 format, so this is also obtained on the LCD screen of the TV. It is widely used, which is more in line with human visual experience and facilitates the presentation of video images.
In general, we make 16:9 broadband, which is suitable for watching movies. And 4:3 is called a general screen. In the same size, the widescreen area is larger than that of the general screen. Sometimes you choose a widescreen LCD TV, but playing some TV shows may cause lateral stretching of the image. This is the phenomenon that the ratio of the program source and the display screen cannot be well adapted. Now most of the HD resources are 16:9 screens. If you find that the screen is not suitable, it is recommended that you lock the original video aspect ratio.
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