Audio and video synchronization test method and device
A technology of audio-video synchronization and testing method, which is applied in the field of audio-video testing, can solve the problems that the audio-video synchronization testing method is not objective, accurate, and simple enough, and achieve the effect of simple audio-video synchronization testing
Active Publication Date: 2019-02-01
SHENZHEN TCL DIGITAL TECH CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The invention provides a method and device for synchronous testing of audio and video, aiming to solve the technical problem that the existing synchronous testing methods of audio and video are not objective, accurate and simple
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0047] The invention provides a method for synchronous testing of audio and video, such as figure 1 As shown, a schematic flow chart of the first embodiment of the audio-video synchronization test method of the present invention is shown, and the audio-video synchronization test method includes:
[0048] S10. Adding frame numbers sequentially to each frame of the video;
[0049] When performing audio-video synchronization test of a video, it is first necessary to select a video, which is any video actually watched by the user, it can be a complete long video, or a short video intercepted from a complete long video . Using existing video processing technology, frame numbers can be sequentially added to each frame of the selected video. For example, assuming that the video to be tested is a 10-minute video with a fra...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Disclosed in the present invention is a method for testing audio and picture synchronization, comprising: sequentially adding a serial frame number to each frame of a video; when the audio data of the video is read by means of an audio decoder, determining when an audio signal is played and using this moment as a check point, and acquiring, from the video with added serial frame numbers, a first serial frame number corresponding to each check point; while a terminal is playing the video with added serial frame numbers, when it is detected for the Nth time that an audio signal is played, acquiring a second serial frame number corresponding to the current video picture, and according to the first serial frame number corresponding to the Nth check point arranged in an ascending order on the basis of the playing time moment, the second serial frame number currently acquired and a preset first threshold, determining whether the current audio and picture are synchronous; the value of N being 1, 2, 3… in turn. Further disclosed in the present invention is a device for testing audio and picture synchronization. The present invention realizes objective, accurate and simple audio and picture synchronization testing on the video that a user actually views.
Description
technical field [0001] The invention relates to the technical field of audio and video testing, in particular to an audio and video synchronization testing method and device. Background technique [0002] Since multimedia devices such as televisions spend more time processing video signals than audio signals, especially when video images need to perform quality motion compensation, more time will be spent. During the research and development process, it is necessary to test whether the audio and video of the video are synchronized, that is, store the audio signal in the cache, and test and measure the difference in playback of the audio and video. [0003] The current common way to test the synchronization of audio and video is for the testers to watch TV and compare whether the lip movement of the characters in the video screen is synchronized with the sound they hear. Due to the individual differences of the testers, there will be an error of about 200ms, but many enthusi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N21/43H04N21/442
CPCH04N17/004H04N21/4307H04N21/44204H04N7/52H04N17/00
Inventor 刘桂芳平安
Owner SHENZHEN TCL DIGITAL TECH CO LTD