Heterogeneous video conference system and platform based on network

The invention provides a network-based heterogeneous video conference system and platform, and relates to the field of video conferences, and the method comprises the steps: loading a first output video of a first conference party, carrying out the frame number segmentation, and generating a first output video frame sequence; performing same-frame image coding on the first output video frame sequence to generate a first-level coding result; performing multi-frame image coding on the primary coding result to generate a secondary coding result; loading a first channel group occupation state and a first channel group constraint bandwidth of the first conference party and the second conference party; according to the first channel group occupation state and the first channel group constraint bandwidth, transmission scheduling optimization is carried out on the second-level coding result, and a transmission scheduling scheme is generated; and controlling the image instant interaction of the first conference party