Method and device for preventing program inter-cut, electronic equipment and storage medium

Abstract

The invention provides a method and device for preventing program inter-cut, electronic equipment and a storage medium. The method comprises the following steps: playing a received data frame in realtime; performing signature verification on the received data frame; when it is determined that playing of the data frame played at the current moment needs to be stopped according to the signature verification result, stopping playing; through playing the received data frame in real time, stopping playing only when it is determined that playing of the data frame played at the current moment needsto be stopped according to the signature verification result, so as to prevent program inter-cut; or else performing playing normally. Compared with the mode that in the prior art, the code stream isplayed only after signature verification is correct, the method effectively reduces the playing delay.

Description

technical field [0001] The present application relates to the technical field of video and audio playback, and in particular, relates to a method, device, electronic device and storage medium for preventing program interruption. Background technique [0002] At present, digital TV programs include encrypted programs and clear stream programs. Encrypted programs use conditional access system to encrypt and protect programs at the source end, and clear stream programs do not use any protection measures at the source end. There are no protection measures for the legality of the code stream. Therefore, in order to prevent program insertion, for programs that are in normal operation, the program needs to be signed at the source end. After receiving the signed program, the terminal will verify the signature in advance. [0003] The current code stream signature verification scheme uses the format of the packets in the transport stream and the relationship between the packets to s...

AI Technical Summary

Problems solved by technology

[0003] The current code stream signature verification scheme uses the format of the packets in the transport stream and the relationship between the packets to sign the basic packets in the transport stream, insert the signature into the transport stream, and verify the signature when the transport stream is played; A fixed number of basic packets is used to segment, and a header packet is inserted before each segment packet as a segment mark. The header packet contains information such as the number of basic packets of the segment, verification certificates, etc.; each segment is inserted at the end of the tail packet, and the tail packet is the signature value; the terminal needs to load the entire descrambled code stream, analyze and control it internally, and play the code stream only after the signature verification is correct. It has high requirements on the processing performance of the terminal, and it is easy to Cause playback delay

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