Video Encoding Device, Video Encoding Method, Video Encoding Program, Video Decoding Device, Video Decoding Method, And Video Decoding Program

Abstract: A generation unit changes first prediction mode information to second prediction mode information according to a combination of a shape of a coding target block in an image included in a video and a shape of a coded block that is adjacent to the coding target block. The first prediction mode information is prediction mode information that indicates an intra prediction mode used for coding of the coded block. Then,the generation unit generates candidate information including a candidate value for prediction mode information, by using the second prediction mode information. A prediction unit generates an intra prediction pixel value for the coding target block in a prescribed intra prediction mode. A first coding unit encodes the coding target block by using the intra prediction pixel value. A second coding unit encodes prediction mode information that indicates the prescribed intra prediction mode, by using the candidate information.

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