Methods for detecting frame type and frame size of video stream and apparatus

A detection method and detection device technology, which are applied in the multimedia field, can solve the problem of not having an effective solution, and achieve the effect of accurate detection results.

Active Publication Date: 2014-12-03
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In the existing no-reference video quality assessment method based on frame type parameters, it is necessary to detect the video frame type first, and there is no complete and effective method for detecting frame type in the prior art
[0005] In addition, the existing frame size detection methods are only applicable to frames without packet loss, and there is no effective solution for the size detection of frames with packet loss

Method used

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  • Methods for detecting frame type and frame size of video stream and apparatus
  • Methods for detecting frame type and frame size of video stream and apparatus
  • Methods for detecting frame type and frame size of video stream and apparatus

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] figure 1 It is a schematic flowchart of a method for detecting a frame type of a video stream provided by an embodiment of the present invention. like figure 1 As shown, the method includes:

[0055] 101. Obtain the size of a current video frame, where the current video frame is located after the first video frame of the video stream.

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Abstract

Embodiments of the present invention provide a method and a device for detecting a frame type and a frame size of a video stream. The method for detecting the video frame type comprises: obtaining a size of a current video frame, the current video frame being located after a first video frame of the video stream; obtaining a changing characteristic value of the current video frame according to a size of the current video frame and a size of a former video frame adjacent to the current video frame; obtaining an I frame threshold of the current video frame according to the video frame rate and a location of the current video frame; and determining whether the former video frame is an I frame according to changing characteristic values of the current video frame and the former video frame, the I frame threshold of the current video frame, sizes of the current video frame, the former video frame, and the former two video frames. According to the present invention, a complete and effective method for detecting the frame type is provided, a video frame before the former video frame may only be considered when the frame type of the former video frame is detected, and the effect of the video frame rate is fully taken into consideration.

Description

technical field [0001] Embodiments of the present invention relate to multimedia technology, and in particular to a method and device for detecting frame type and frame size of a video stream. Background technique [0002] In the context of the rapid development of network media, services such as video on demand, Internet TV, and videophone have become the main services of broadband networks and wireless networks, making operators need to monitor the quality of transmitted video services and take corresponding measures to adjust them in time To ensure user experience requirements for media services. Network video quality assessment is an essential technology in network video applications. [0003] According to the degree of need for the original reference video, video objective quality assessment methods can generally be divided into three categories: full-reference, partial-reference, and no-reference video objective quality assessment. Due to the limitation of channel ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/647H04N21/6437H04N19/89
CPCH04N19/115H04N19/85H04N19/61H04N17/004H04N19/103H04L43/0835H04N19/89H04N21/44008H04N21/6437H04N17/00
Inventor 高山张雷孙李娜
Owner HUAWEI TECH CO LTD
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