Play delay difference measurement method, device, equipment, system and storage medium
A measurement system, a technology of delay difference, applied in the direction of television, electrical components, image communication, etc., can solve the problems of inability to obtain audio output delay and video output delay separately, complex test methods, and high test costs.
Active Publication Date: 2020-12-04
BIGO TECH PTE LTD
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[0004] At present, for an audio and video device, the sound loopback delay test scheme and the video loopback delay are usually used in the prior art to obtain the sum of audio input delay and output delay and the sum of video input delay and output delay respectively , but the audio output delay and video output delay cannot be obtained separately. If you need to obtain the audio output delay and video output delay separately, you need to use professional measuring equipment such as an oscilloscope to measure on the main board of the terminal device. Auxiliary hardware devices such as sound and light sensors need to be introduced, the test cost is high, and the test method is complicated
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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures. In addition, the embodiments and the features in the embodiments of the present invention can be combined with each other under the condition of no conflict.
[0030] In order to facilitate understanding of the embodiments of the present invention, related concepts and related technologies are introduced below.
[0031] The audio output delay of audio and video equipment (referred to as audio output delay or audio playback delay) can be understood as the audio data from input to the system interface (for example, th...
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The embodiment of the invention discloses a playing delay difference measurement method, device, equipment, a system and a storage medium. The play delay difference measurement system comprises firstaudio and video equipment, second audio and video equipment and computer equipment, the first audio and video equipment is used for synchronously playing a sound signal corresponding to a preset audiosignal and an image signal corresponding to a preset video signal, the second audio and video equipment is used for simultaneously collecting the sound signal and the image signal, and obtaining audio and video files, and the computer equipment is used for acquiring the audio and video files, and determining the audio and video play delay difference corresponding to the first audio and video equipment according to the difference between the first time point when the preset audio signal appears in the audio and video files and the second time point when the preset video signal appears in the audio and video files. According to the technical scheme provided by the embodiment of the invention, the audio and video output delay difference of the audio and video equipment can be quickly and accurately measured, the measurement cost is saved, and the measurement efficiency is improved.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of audio and video equipment, and in particular, to a method, device, device, system and storage medium for measuring playback delay difference. Background technique [0002] With the rapid development and continuous improvement of image processing technology, audio processing technology and terminal technology, terminals such as mobile phones and tablet computers have audio and video playback functions, and have become commonly used audio and video playback devices for users. [0003] Audio and video equipment can not only play audio and video, but also use cameras and microphones to realize video calls or live broadcasts online. During this process, audio and video playback delays will be caused by network jitter and their respective anti-jitter strategies are inconsistent or other The reasons lead to deviations. When the deviation exceeds a certain range, audio and video synchronizat...
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IPC IPC(8): H04N17/00
CPCH04N17/00
Inventor 成家雄王冬冬周二永
Owner BIGO TECH PTE LTD