Multimedia data time correction method, computer device and computer readable storage medium

Abstract

The invention discloses a multimedia data time correction method, a computer device and a computer readable storage medium, the method comprises the steps that time data of multimedia data are obtained, and whether the time data are continuous time data is judged; if it is determined that the time data are not continuous time data, first fitting straight lines of the time data are calculated according to the time data in the historical data of the multimedia data, the distances between the time data of the current multimedia data and the first fitting straight lines are calculated, if the distances are larger than a preset distance threshold value, the time data in the historical data of the multimedia data are cleared, the time data of current and follow-up received multimedia data are used for calculating second fitting straight lines, and the second fitting straight lines are used for calculating the correction time data of the current and follow-up received multimedia data. The multimedia data time correction method can be realized by the computer device. According to the multimedia data time correction method, the computer device and the computer readable storage medium, the situation that the video stops or the video breaks down when the multimedia data are subjected to time reconstruction can be avoided.

Description

technical field [0001] The invention relates to the field of multimedia data processing, in particular to a method for correcting time data of multimedia data, a computer device for realizing the method, and a computer-readable storage medium. Background technique [0002] With the development of network technology, the transmission of audio and video files through the network has become a widely used technology, especially with the popularization of portable electronic devices such as smartphones and tablet computers, people have used electronic devices such as smartphones and tablet computers more and more widely. Watch the video file. Since video files contain image data and audio data, and image data and audio data are often transmitted using different data frames, in order to ensure the synchronous playback of image data and audio data, it is usually necessary to synchronize image data and audio data. . [0003] In the process of digital TV and Internet TV live broadc...

AI Technical Summary

Problems solved by technology

[0006] This discontinuity may be caused by a variety of reasons, that is, the receiving end of the multimedia data will receive the program clock data and display the time stamp due to a variety of reasons, such as weak signals or noise during network transmission, etc. Under certain conditions, or there will be an error at the encoding end and the wrong program clock data and display time stamp will be transmitted. When the program clock data and display time stamp are discontinuous, the wrong program clock data and display time stamp will interrupt the image data and audio data. Synchronization, resulting in image data and audio data out of sync

[0007] The existing technology is not ideal when the program clock data and the display time stamp are not synchronized. The existing method is to use the demultiplexer to calculate the jump amount of the program clock data, and add the display time stamp to the program clock data. Jump amount to rebuild the display timestamp to get a new display timestamp

[0008] There are two problems with this method: first, the amount of jumps using the program clock data is not sufficient to correct the display timestamp to maintain or achieve audio-video synchronization, because in some cases, the offset calculated using the program clock data is not related to the display time Poking discontinuity is irrelevant, resulting in still video frames or audio failures, that is, video data is played but audio is still, or audio is played but video is still, which seriously affects the user's physical examination

Secondly, if the program clock data itself is wrong, the offset calculated by the program clock data is also wrong. In this case, it will also cause video freeze frame or audio failure

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