VIDEO ENCODING SYSTEM, PROGRAM BANK DEVICE, AND VIDEO ENCODING METHOD

摘要

Encoders of a program bank device perform compression coding on video/voice data of a program from program VTRs, and extract an image feature value of video data of the program to be accumulated in a program database. When a time earlier by a predetermined time than a program delivery time indicated by program operation information from a program operation management server is reached, the program database notifies a statistical multiplexing controller of an image feature value and preliminarily calculates a video encoding bit rate by statistical multiplexing analysis processing. When the program delivery time is reached, the video/voice data of the program from the program database is decoded by decoders and output to delivery encoders at a timing when the data is output to the delivery encoders.

主权项

1. A video encoding system comprising:
a program bank device that accumulates video/voice data of a program for broadcasting and retrieves video/voice data of a program to be delivered, in accordance with program operation information supplied from a program operation management server operating in cooperation; one or more delivery encoders that encode the retrieved video/voice data of the program into a state compatible with a transport stream format; and a statistical multiplexing controller that performs statistical multiplexing analysis processing relating to an image feature value extracted from video data of the program to be delivered, and calculates a video encoding bit rate for use in encoding the video data in the delivery encoders, wherein the program bank device includes:
one or more encoders that perform compression coding on the video/voice data of the program and extract the image feature value of the video data of the program;a program database that accumulates both the video/voice data of the program and the extracted image feature value, the video/voice data being compression-coded by the encoders; one or more decoders that decode the video/voice data relating to the program accumulated in the program database and output the decoded video/voice data to the delivery encoders, when a program delivery time indicated by the program operation information is reached; anda unit that retrieves the image feature value of the video data relating to the program accumulated in the program database and notifies the statistical multiplexing controller of the retrieved image feature value, when a time earlier by a predetermined time than the program delivery time indicated by the program operation information is reached, and the statistical multiplexing controller performs the statistical multiplexing analysis processing relating to the image feature value of the video data of the program notified from the program bank device to preliminarily calculate a video encoding bit rate for the delivery encoders, by referring to the program delivery time indicated by the program operation information supplied from the program operation management server, and outputs the calculated video encoding bit rate to the delivery encoders at a timing when the decoded video/voice data of the program is output to the delivery encoders from the decoders of the program bank device.