Audio and video coding processing method, device and equipment for digital television

The invention relates to the technical field of audio and video coding, and discloses an audio and video coding processing method, device and equipment for a digital television. The method comprises the following steps: performing signal processing on an original audio and video signal to obtain a first audio and video signal, and performing content extraction and adaptive layered coding to obtain a first audio and video data stream; performing feature decomposition and data encapsulation to obtain a plurality of second audio and video data streams; creating an initial transmission parameter set through a multi-path transmission model and performing data transmission; receiving a plurality of second audio and video data streams through the digital television, and carrying out data stream decoding and depth signal fusion to obtain a second audio and video signal; playing the second audio and video signal through the digital television and carrying out state monitoring to obtain playing state data; according to