Method for extracting audio and video data from multimedia
An audio, video and multimedia technology, applied in the field of audio and video processing, can solve the problems of difficulty in obtaining data, heavy workload and slow speed of audio and video data, and achieve the effect of overcoming complexity.
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[0034] Embodiment: a kind of method of extracting audio and video data from multimedia in the present embodiment, as figure 1 As shown, the details are as follows:
[0035] 1. Build a complete media rendering link: as long as the file can be played normally, you can use the DerectShow smart connection method to call the Render method of the graph manager to directly get a complete link graph (see figure 2 ), the multimedia data is separated into audio and video signals by the audio and video separator 3 after passing through the source filter 1 and the pre-filter 2 in sequence. The video signal is rendered and played by the device 6, and the video signal enters the video decoder 7 to be decoded and filtered by the video filter 8, and then enters the video renderer 9 for rendering and playback. The pre-filter 2, the audio filter 5 and the video filter 8 are all filters. Instead of just including one filter, various media files and web media can be supported.
[0036] 2. Dyna...
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