Video imaging preview method for video conference system
A video conferencing system and video preview technology, applied in the direction of video conferencing systems, two-way working systems, etc., can solve the problems that the conference presentation screen is difficult to be controlled, cannot meet the needs of complex conference control and use, and is inconvenient to organize and save video data. Achieve the effect of enhancing user experience
Inactive Publication Date: 2012-07-04
南京超然科技有限公司
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Problems solved by technology
At the present stage, both the TV wall server and the recording and broadcasting server directly output the video stream input to the server, so the video images that users see are the original images of the MCU (Multipoint Control Unit) or the video terminal, and the video wall server and The operator of the recording server must use other video conferencing equipment to monitor the video conference. In this case, it is difficult to control the presentation of the conference, and it is not convenient to organize and save the video data after the conference.
Therefore, the existing video wall server and recording server cannot meet the control and use requirements of complex conferences
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[0020] see figure 1 :
[0021] (1) Receive all original video streams from the video wall server and recording server network interface, decompose them, and extract video key frames;
[0022] (2) Send the video key frames of the original video stream to the interface of the video preview page through the HTTP protocol. The video preview page decodes the video key frames of the original video stream through the H.264 decoder to generate YUV data, and stores them in the memory. The key frame preview module draws YUV data to the screen to realize the presentation of video key frames;
[0023] (3) Input the YUV data stored in the memory to the preview video stream module, and the H.264 encoder in the preview video stream module performs secondary encoding on the YUV data, and the encoded video size is CIF or QCIF, and through the secondary encoding The generated H.264 preview video stream generates a preview video file through the preview video stream segmenter again, and the vi...
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The invention provides a video imaging preview method for a video conference system. The method comprises: all original video streams are received from a television wall server and a recording-broadcasting server network interface; the original video streams are decomposed and a video key frame is extracted and transmitted to a video preview page interface through an HTTP (Hyper Text Transport Protocol) protocol; decoding is performed by an H.264 decoder to generate YUV (Luma and Chroma) data; a preview video stream module performs secondary coding to the YUV data; a preview video file is generated from an H.264 preview video stream through a preview video stream sectionalizer, wherein the H.264 preview video stream is generated through secondary coding; a video preview page distributes the module to the preview video file to request to preview the video file through the HTTP; the preview video file is decoded as YUV data through the H.264 decoder; and the YUV data is drawn into a screen through a preview video stream broadcaster. According to the invention, a user is facilitated to perform video preview to a current server video stream at an operation floor, and each video stream can be combined and spliced, so that a server output display function is perfected, and user experience is enhanced.
Description
technical field [0001] The invention relates to a video imaging preview method used in a video conference system, belonging to the technical field of television / video communication. Background technique [0002] With the continuous development of video conferencing requirements, video wall servers and recording servers are more and more widely used in video conferencing systems. At the present stage, both the TV wall server and the recording and broadcasting server directly output the video stream input to the server, so the video images that users see are the original images of the MCU (Multipoint Control Unit) or the video terminal, and the video wall server and The operator of the recording server must use other video conferencing equipment to monitor the video conference. In this case, it is difficult to control the presentation of the conference, and it is not convenient to organize and save the video data after the conference. Therefore, the existing video wall se...
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IPC IPC(8): H04N7/15
Inventor 李宾袁庆丰窦志勇
Owner 南京超然科技有限公司
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