Method for synchronization of audio frequency and video frequency of stream media terminal

A technology of audio, video and streaming media, applied in the field of audio and video synchronization, it can solve complex problems and achieve the effect of short initial delay and high degree of smoothness

Inactive Publication Date: 2008-06-25
SHANGHAI CHENXING ELECTRONICS SCI & TECH CO LTD
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  • Abstract
  • Description
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Therefore, it is more complicated t

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  • Method for synchronization of audio frequency and video frequency of stream media terminal
  • Method for synchronization of audio frequency and video frequency of stream media terminal
  • Method for synchronization of audio frequency and video frequency of stream media terminal

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[0012] Such as figure 1 As shown, in steps 1000 and 1000', the data transmitted by the streaming media server on the network side is divided into two categories: audio data and video data, and these data have time stamp information. Steps 1001, 1001', put these data into their respective In order to reuse the memory, the present invention uses a circular queue to store data from the beginning when the data storage reaches the end of the queue. When the data in the respective queues reaches their respective certain thresholds, namely steps 1002, 1002', step 1003 is executed to start decoding, otherwise, the data from the network side continues to be received and enters the queue.

[0013] Next run program 200, such as figure 2 As shown, first perform step 2000 to initialize the index values ​​Audio_index and Video_index of the audio and video data queues. These two values ​​represent the current audio and video data positions that need to be decoded. During synchronization, the a...

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Abstract

A synchronizing method of audiovideo of a streaming media terminal comprises the steps that: S1, input data is carried through the processing of buffering and memorizing; S2, input data frames of video are carried through the processing of skip; S3, a playing process is operated synchronously. The invention has the advantages that: the initial delay of a user is short and the fluency is high when in the process of playing.

Description

Technical field [0001] The present invention relates to a streaming media technology and multimedia technology, in particular to a method for synchronizing audio and video on a terminal with streaming media function. Background technique [0002] Streaming media is a technology for playing multimedia online on the Internet. Because of its characteristics of downloading and playing, it shortens the initial waiting delay of users, but its data also needs to be streamed, which has high real-time requirements. Therefore, it is more complicated than general local playback processing. The client is a basic part of the streaming media system, and is generally a player with network communication functions. Since the audio and video data are transmitted separately, there is the possibility of being out of synchronization. This will destroy the quality of service during playback. Therefore, it is necessary to resynchronize the audio and video when the data is taken out before playback. The...

Claims

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Application Information

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IPC IPC(8): H04N7/62H04N7/60H04N7/52
Inventor 向荣
Owner SHANGHAI CHENXING ELECTRONICS SCI & TECH CO LTD
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