Audio and video synchronization method and audio and video synchronization system and mobile phone live broadcast client-side
An audio and video synchronization and client-side technology, applied in the field of streaming media, can solve problems such as increasing the threshold of user service usage and increasing the resource consumption of receiving terminals
Active Publication Date: 2013-06-19
CHINA TELECOM CORP LTD
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Problems solved by technology
[0004] The existing mobile phone streaming media synchronization technology is mainly aimed at Internet video-on-demand, and also adjusts the video playback frame rate by comparing the time tags of audio and video units to achieve audio and video synchronization, but all are processed at the receiving end, and buffering needs to be opened in the receiving end area, which increases the resource consumption of the receiving terminal; in addition, a dedicated audio and video player is required, thus increasing the threshold for user services
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[0018] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention.
[0019] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0020] In the following embodiments of the present invention, the time length of the current video frame is controlled according to the difference between the total time length of the current audio and the total time length of the current video based on the time length of the audio frame, so as to achieve the purpose of synchronizing audio and video.
[0021] figure 1 It is a schematic flowchart of an embodiment of the audio-video synchron...
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The invention discloses an audio and video synchronization method and an audio and video synchronization system, and a mobile phone live broadcast client-side. The method comprises the steps of collecting and separating audio and video data in real time, stamping a timestamp on each separated video frame and each separated audio frame, and storing the time length of a current video frame of each video frame and the time length of a current audio frame of each audio frame; judging whether the number of total frames of current audio frequency reaches a preset frame number, if the number reaches the preset number, judging whether the absolute difference between the total time length of the current audio frequency and the total time length of the current video frequency is greater than a preset time threshold, and if the absolute difference is greater than the preset time threshold, further judging the relation between the total time length of the current audio frequency and the total time length of the current video frequency; increasing the time length of the current video frame under the condition that the total time length of the current audio frequency is greater than the total time length of the current video frequency, and reducing the time length of the current video frames under the condition that the total time length of the current audio frequency is less than the total time length of the current video frequency; and sending the audio and video data and synchronous control parameters to an audio and video player so as to realize synchronous audio and video playing.
Description
technical field [0001] The present invention relates to the technical field of streaming media, in particular, to an audio and video synchronization method, system and mobile phone live broadcast client. Background technique [0002] According to Yankee's estimate, the four most potential applications of the Asia-Pacific mobile Internet from 2010 to 2012 include mobile video, mobile music, mobile pictures and mobile advertising. With the large-scale commercial use of 3G networks, the transmission bandwidth of wireless networks has been greatly increased, and the processing capabilities of mobile terminals have been continuously enhanced. Audio and video live broadcasting based on mobile terminals has been successfully realized. This function can meet the needs of users for instant interaction and scene sharing, and is very likely to become the killer application of the mobile Internet in the future. [0003] In mobile live broadcasting, the default setting for audio is 20ms...
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Login to View More IPC IPC(8): H04N21/236H04N21/434H04N21/462
Inventor 嵇正鹏汪敏娟袁海胡仲刚
Owner CHINA TELECOM CORP LTD