Abstract: The present disclosure disclose a video data decoding method. The method includes: receiving a bitstream; parsing the bitstream to obtain residual data of a current to-be-decoded image block, prediction information of the current to-be-decoded image block, and a pixel value transformation mode identifier of the current to-be-decoded block; obtaining predictors of the current to-be-decoded image block; obtaining reconstructed pixel values of pixels of the current to-be-decoded image block; and performing spatial transformation on the reconstructed pixel values of the pixels of the current to-be-decoded image block according to a pixel value transformation mode corresponding to the transformation mode identifier of the current to-be-decoded image block, to obtain transformed pixel values of the pixels of the current to-be-decoded image block. The embodiments of the present disclosure further disclose a video data encoding method, a decoding apparatus, and an encoding apparatus.

Abstract: The present application discloses video data encoding and decoding methods and apparatuses, so as to conveniently perform data encoding and decoding on video data. The method includes: arithmetic encoding, where the arithmetic encoding includes: obtaining a binary symbol of image data; and if the binary symbol is a most probable symbol (MPS), updating a first encoding interval corresponding to the MPS in a logarithm domain, and if the first updated encoding interval is less than a preset range of an arithmetic encoding interval, performing normalization processing on the first encoding interval in the logarithm domain; or if the binary symbol is a least probable symbol (LPS), updating a second encoding interval corresponding to the LPS in an original number domain, and performing normalization processing on the second encoding interval in the original number domain.

Abstract: The present application discloses video data encoding and decoding methods and apparatuses, so as to conveniently perform data encoding and decoding on video data. The method includes: arithmetic encoding, where the arithmetic encoding includes: obtaining a binary symbol of image data; and if the binary symbol is a most probable symbol MPS, updating a first encoding interval corresponding to the MPS in a logarithm domain, and if the first updated encoding interval is less than a preset range of an arithmetic encoding interval, performing normalization processing on the first encoding interval in the logarithm domain; or if the binary symbol is a least probable symbol LPS, updating a second encoding interval corresponding to the LPS in an original number domain, and performing normalization processing on the second encoding interval in the original number domain.