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|1. (WO2017197828) VIDEO ENCODING AND DECODING METHOD AND DEVICE|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||VIDEO ENCODING AND DECODING METHOD AND DEVICE|
Provided in the present invention are a video encoding and decoding method and device for use in synchronization of background images at an encoding end and a decoding end. The solution of the present invention comprises, determining a background image to be used as a reference image, using background image indication information to indicate when to begin using the background image as the reference image, the encoding end using the background image as the reference image from a point in time indicated by the background image indication information so as to encode a video image to be encoded and generate a main codestream, and the encoding end transmitting to the decoding end a background image codestream, the background image indication information, and the main codestream. Background image indication information is used to indicate a point in time to begin using a background image as a reference image, so that the time an encoding end uses the reference image and the time a decoding end uses the reference image can be synchronized.