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Audio-visual media file synthesis method and service system

A technology of media files and synthesis methods, applied in transmission systems, TV system components, electrical components, etc., can solve problems such as inability to execute

Active Publication Date: 2017-12-22
WISTRON CORP
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the technique of using a screen recording APP to create the aforementioned multimedia files needs to be executed on a computer device that is compatible with the APP and installed with the APP. If the operating system or hardware architecture of the computer device does not support the screen recording APP, it cannot be executed.

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  • Audio-visual media file synthesis method and service system
  • Audio-visual media file synthesis method and service system

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preparation example Construction

[0044] Embodiments of the audio-visual media file synthesis method of the present invention mainly include figure 2 The following steps are shown:

[0045] Step S21—the MCU 12 receives an audio RTP packet and an audio RTCP packet corresponding to the audio file transmitted from the terminal device 9 in a streaming manner (step S21 ). On the other hand, in step S22, the MCU 12 receives a plurality of video RTP packets and video RTCP packets corresponding to the video file (step S22). The detailed steps will be matched below image 3 and Figure 4 illustrate.

[0046] Step S3—combining jobs. The detailed steps will be matched below Figure 5 to Figure 7 illustrate. Once you are done recording the media file, close the job and end the process.

[0047] Here, the audio data acquisition operation is used as an example to illustrate, and the detailed process of the image data acquisition operation can be deduced in the same way. Relevant audio data acquisition operations ca...

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Abstract

An audio-visual media file synthesis method and service system. The method for synthesizing audio-visual media files is performed by a service system, and the service system is connected to the terminal device through its browser; the method includes: receiving a plurality of RTP / RTCP packets corresponding to audio / video files transmitted in a stream from the terminal device; reading Take the timestamp in the first audio / video RTCP packet and record it as the absolute start time of the first audio / video RTP packet; write the audio / video buffer for the received audio / video RTP packet; Take out the audio RTP packet from the queue of the buffer, calculate the difference between the relative timestamp of the packet and the relative timestamp of the previous packet, and directly or indirectly match the audio absolute start time according to the difference to generate the playback of the audio / video RTP packet Timestamping; and writing audio / video RTP packets to the media file together with its playback timestamp. The invention can achieve the synchronous effect of audio and video, and complete the synthesis and recording of audio and video.

Description

technical field [0001] The invention relates to an audio-visual media file synthesis method and service system, in particular to a browser-based audio-visual media file synthesis method and service system. Background technique [0002] Currently, there are screen recording application programs (APP) on the market that are used to combine screen images and voice explanations to form a .rmvb or .mp4 multimedia file. This technology is especially suitable for making teaching materials such as computer operation teaching, so that learners can understand the operation process from the picture and explanation by playing the multimedia file. [0003] However, the technique of using a screen recording APP to create the aforementioned multimedia files needs to be executed on a computer device that is compatible with the APP and installed with the APP. If the operating system or hardware architecture of the computer device does not support the screen recording APP, it cannot be execut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/85H04N21/8547H04N5/265H04L29/08
CPCH04N21/8547H04L69/28H04N21/6125H04N21/6437H04N21/43072H04L65/65H04N5/04
Inventor 任飞
Owner WISTRON CORP