Video aspect ratio conversion method and device

Abstract

The invention discloses a video aspect ratio conversion method and a video aspect ratio conversion device. The method comprises that: a terminal acquires a display aspect ratio of a displayer, detects an aspect ratio of a program source, and compares the display aspect ratio of the displayer with the aspect ratio of the program source, and performs conversion on the basis of a comparison result according to a preset rule. Through the invention, problems that only one conversion mode can be fixedly adopted and cannot adapt to various complicated scenes, and human intervention is needed in the process of switching to cause poor user experience in the prior art are solved, and the user experience is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a video aspect ratio conversion method and device. Background technique [0002] Video aspect ratio is the ratio of the width of a video divided by its height, usually expressed as "x:y", where the colon means "ratio" in Chinese. At present, the traditional 4:3 (1.33:1) is widely used in many TV screens today, and its successful successor specification 16:9 (1.78:1) is used in high-definition TV and European digital TV superior. [0003] When the aspect ratio of the program source is different from that of the TV screen, it will inevitably involve the adaptation conversion of the screen size ratio. Generally, the following four conversion methods are adopted: the first one is called letterbox, and its conversion principle is to keep the screen ratio unchanged by adding black borders up and down or left and right on the program screen. The second is called pan&scan, and its co...

AI Technical Summary

Problems solved by technology

The second and third methods are seldom used due to the cropping of the program screen, resulting in the loss of screen content. Generally, the industry mainly uses the first and fourth methods

[0005] The terminal conversion mode is configured as ignore: the program source is 4:3, when the connected TV is in 4:3 mode, it can ensure the picture is completely displayed without scale distortion; but when the connected TV is in 16:9 mode, the picture display ratio is distorted ,like Figure 1 (B) as shown

[0006] The terminal conversion mode is configured as ignore: the program source is 16:9, when the connected TV is in 16:9 mode, it can ensure that the picture is completely displayed without proportional distortion; but when the connected TV is in 4:3 mode, the picture display ratio is distorted ,like Figure 1 (C) as shown

[0007] The terminal conversion mode is configured as letterbox: the program source is 4:3, and when the connected TV is in 16:9 mode, it can ensure that the picture is completely displayed without proportional distortion; but when the connected TV is in 4:3 mode, the picture display ratio is distorted ,like Figure 1 (E) shown

[0008] The terminal conversion mode is configured as letterbox: the program source is 16:9, and when the connected TV is in 4:3 mode, it can ensure that the picture is completely displayed without proportional distortion; but when the connected TV is in 16:9 mode, the picture display ratio is distorted ,like Figure 1 (H)

[0009] Aiming at the problem that only one of the conversion methods can be set and fixed in the related technologies, it cannot adapt to various complex scenarios, and the switching requires manual intervention, resulting in poor user experience. No effective solution has been proposed so far.

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