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Video frame rate detection method and system

A technology of video frame rate and detection method, applied in the field of audio and video, can solve the problems of watching fatigue, affect the video viewing effect, and reduce the viewing effect, and achieve the effect of improving the accuracy

Pending Publication Date: 2022-04-08
BEIJING TRICOLOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the video transmission is based on the video transmission system, it is impossible to judge whether the output frame rate of the entire video transmission system meets the preset actual frame rate by detecting the output frame rate of the decoder alone.
The video frame rate will affect the video viewing effect. If the video frame rate detection is inaccurate, the actual frame rate is lower than the detection frame rate, and the detection frame rate meets the output requirements but the actual frame rate does not meet the frame rate requirements, it will be mistaken for the frame rate. Meet the requirements, resulting in reduced viewing effect
For example: if the detected decoder output frame rate is 60 frames, but the video frame rate of the user is only 40 frames when watching, it will cause viewing fatigue, but the player still thinks that the video is being transmitted normally at 60 frames

Method used

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  • Video frame rate detection method and system
  • Video frame rate detection method and system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0029] Such as figure 1 It is a schematic flowchart of a video frame rate detection method provided by an embodiment of the present invention.

[0030] Such as figure 1 As seen, the method includes the following steps:

[0031]Step S101: Obtain the first continuous video frame to be input into the system under test, and add a corresponding first identification to each video frame in the first continuous video frame in sequence; the system under test is used to convert the received video frame The frame is encoded and then transmitted to the output terminal, and the video frame is decoded and output at the output terminal.

[0032] In this embodiment, the system under test is a video transmission system; the video transmission system includes: an encoder and a decoder. Wherein, the encoder is connected with the video source of the peripheral device. Further, the video source includes: a computer or other video playback devices.

[0033] In actual operation, the method of o...

Embodiment 2

[0042] exist figure 1 On the basis of the shown method, the present invention also provides another video frame rate detection method. figure 2 A schematic flow diagram of another video frame rate detection method is provided for the embodiment of the present invention, such as figure 2 As seen, the method includes the following steps:

[0043] Step S201: Obtain the first continuous video frame to be input into the system under test, and add a corresponding first identification to each video frame in the first continuous video frame in order; the system under test is used to convert the received video The frame is encoded and then transmitted to the output terminal, and the video frame is decoded and output at the output terminal.

[0044] Step S202: Obtain the decoded second continuous video frame from the system under test, and add a corresponding second identifier to each video frame in the second continuous video frame in order to obtain a third continuous video frame;...

Embodiment 3

[0053] On the basis of Embodiment 1 and Embodiment 2, the present invention also provides a video frame rate checking system. image 3 A schematic structural diagram of a video frame rate checking system is provided for an embodiment of the present invention, as shown in image 3 As can be seen, the system includes: a video tagging device 31 and a video analysis device 32 .

[0054] The video sign-on device 31 is connected to the input of the system under test 33; the video sign-on device 31 is used to obtain the first continuous video frames to be input into the system under test, and for each video in the first continuous video frames A corresponding first identifier is added to the frame in sequence; the system under test is used to encode the received video frame and transmit it to the output terminal, and decode the video frame at the output terminal to output.

[0055] The video sign-on device 31 is also connected to the output of the system under test 33; the video sig...

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Abstract

The invention provides a video frame rate detection method and system, and the method comprises the steps: obtaining first continuous video frames to be inputted into a to-be-detected system, and sequentially adding a corresponding first identifier for each video frame in the first continuous video frames; acquiring decoded second continuous video frames from the to-be-tested system, and sequentially adding a corresponding second identifier for each video frame in the second continuous video frames to obtain third continuous video frames; the first identifier and the second identifier are uniformly changed identifiers; and determining the actual output frame rate of the to-be-tested system based on the first identifier and the second identifier corresponding to each video frame in the third continuous video frames. According to the method, the identifiers are added to the videos of the input end and the output end of the to-be-detected system, and the actual output frame rate of the to-be-detected system is determined based on the identifiers, so that the accuracy of output frame rate detection of the video transmission system is improved.

Description

technical field [0001] The present invention relates to the technical field of audio and video, in particular to a video frame rate detection method and system. Background technique [0002] In the field of audio and video display and control, the components that make up the video transmission system generally include: video source, encoder, switch, decoder and display device. [0003] Video frame rate is an important quality parameter of video transmission system. However, since the video transmission is realized based on the video transmission system, it is impossible to judge whether the output frame rate of the entire video transmission system meets the preset actual frame rate by detecting the output frame rate of the decoder alone. The video frame rate will affect the video viewing effect. If the video frame rate detection is inaccurate, the actual frame rate is lower than the detection frame rate, and the detection frame rate meets the output requirements but the act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N21/44H04N21/8352
Inventor 张亚南刘尧
Owner BEIJING TRICOLOR TECH