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Timestamp fault-tolerant control method and device

A fault-tolerant control and time stamping technology, applied in the field of data processing, can solve problems such as normal viewing, video stuck and unable to continue to play, and achieve the effect of improving user experience

Inactive Publication Date: 2016-08-10
LETV HLDG BEIJING CO LTD +1
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Problems solved by technology

In this way, the display effect at the user's place is that the video stops and the audio continues to play, which cannot be viewed normally.
[0010] The second scenario: Assume that the PTS of a series of video frames obtained is: 1022, 1023, 30, 31, 32; here, because the video frame with a PTS of 1023 cannot find the next video frame with a PTS of 1024, So the video freezes and cannot continue to play

Method used

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Embodiment Construction

[0068] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0069] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0070] In the first aspect of the present invention, a time stamp error-tolerant control method is proposed, which can correct wrong time stamps in the process of transcoding, so as to ensure the synchronization of the final output audio and video. Such as figure 1 A...

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Abstract

The invention discloses a timestamp fault-tolerant control method and a device. The method comprises the steps of sequentially acquiring the timestamps of video frames during the audio and video decoding process; calculating a first timestamp difference between a current video frame and a previous video frame; judging whether the first timestamp difference is larger than a predetermined offset threshold or not; on the condition that the first timestamp difference is larger than the predetermined offset threshold, calculating a timestamp offset according to a second timestamp difference between at least two video frames before the current video frame; and replacing the timestamp of the current video frame with the sum of the timestamp of the previous video frame and the above timestamp offset. According to the technical scheme of the timestamp fault-tolerant control method and the device, wrong timestamps during the transcoding process can be corrected. Therefore, finally outputted audios and videos are ensured to be synchronized.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a time stamp fault-tolerant control method and device. Background technique [0002] In the existing audio and video decoding technology, a presentation time stamp (PTS) is used to represent the position of the audio and video frame on the output time axis. It is judged sequentially on the time axis whether there is an audio frame or a video frame corresponding to the PTS, and if so, the video frame or the audio frame is played. [0003] The real-time transcoding system is a system for transcoding audio and video files in real time, which can be divided into three parts: 1) decide whether to process the data according to the PTS in the current data packet; 2) decode according to the input data, And pass the input PTS to the coding module for audio and video synchronization; 3) the coding module encodes and encapsulates according to the decoded data and the PTS, and outpu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0661
Inventor 吕超魏伟白茂生蔡砚刚
Owner LETV HLDG BEIJING CO LTD
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