Video processing method and device

Abstract

An embodiment of the invention discloses a video processing method and device and relates to the technical field of communication. The method and device can switch to play a second clear stream in theprocess of playing a first clear stream and recording a second scrambled stream, and can realize fast forward play or fast backward play in the process of replaying the recorded second scrambled stream. The method comprises the following specific steps: receiving a transport stream TS, wherein the TS comprises a first scrambled stream and the second scrambled stream; transmitting the first scrambled stream and the second scrambled stream to a decryption device; sending a first control instruction to the decryption device; receiving the first clear stream and the second scrambled stream transmitted by the decryption device, wherein the first clear stream is obtained by decoding the first scrambled stream; and playing the first clear stream and recording the second scrambled stream, and generating at least one scrambled stream index in the process of recording the second scrambled stream. The video processing method and device are applied to the video play and TS recording process.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a video processing method and device. Background technique [0002] A set-top box (Set Top Box, STB) is a device that connects a television (Television, TV) to an external signal source, which can process and play the transport stream (Transport Stream, TS) of the received TV program, and then pass the TV The broadcasted TV programs are displayed so that the user can watch the TV programs on the TV. [0003] In order to protect the content of TV programs, operators usually encrypt or scramble the TS of TV programs. The TS generated by scrambling technology is called scrambled stream; After decryption, the decrypted TS is called clear stream. The current STB can use the Common Interface (CI) / CI+ card to decrypt the scrambled stream, and limited by the cost, usually the CI / CI+ card only supports decrypting the scrambled stream of one TV program...

AI Technical Summary

Problems solved by technology

[0005] However, it can be seen from the above implementation process that this method only supports recording clear stream programs or scrambled stream programs, and cannot support recording mixed code stream (including clear stream and scrambled stream) programs, so when playing clear stream program A, and Does not support switching program B, and does not support trick play (for recorded scrambled programs) such as fast-forward playback and rewind playback

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