Global control method, device and system based on multi-program video stream

• Main Authors: FANG HAIDONG, SHAN LINWEI, WANG LIFANG
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a global control method, device and system based on multi-program video streams, and the method comprises the steps: receiving an original video frame of each video stream in a current time period, and obtaining a scene conversion identifier of each original video frame; according to the coding quality level of the current time period, coding each original video frame to obtain all coded video frames, and outputting the coded video frames through a combiner; obtaining a current cache ratio according to all the coded video frames in the current time period; and according to the current cache ratio, all the original video frames in the current time period, the coding video frame and the scene conversion identifier, determining a coding quality level in the next time period, coding each original video frame in the next time period, and outputting the coded original video frames through a combiner. According to the method, the idle bandwidth of the coded data stream can be more effectively