Video coding

A video encoding method, the method comprising:

• obtaining video data;
• determining, based on the video data, at least one candidate motion vector of a current block;
• constructing a template of the current block, the template including pixel points adjacent to the current block;
• determining at least one reference block of the current block in a reference frame based on the at least one candidate motion vector;
• determining, based on a position of each of the at least one reference block, a respective template prediction region corresponding to each reference block in the reference frame, a position of each template prediction region relative to a corresponding reference block being same as a position of the template relative to the current block;
• determining, based on pixel values in the template prediction region corresponding to each reference block, pixel values in a respective first extension region outside the corresponding template prediction region;
• determining, based on the pixel values in the first extension region, sub-pixel interpolation values of the template prediction region corresponding to each reference block through first interpolation filtering processing;
• searching for a target motion vector through an inter-frame template match process based on the template of the current block and the sub-pixel interpolation values of the template prediction region corresponding to each reference block;
• determining pixel values of a matching block based on the target motion vector;
• and
• encoding the current block into a bitstream based on the pixel values of the matching block.

A non-transitory computer-readable storage medium storing instructions which, when executed by a processor, cause the processor to perform a method of encoding a bitstream, the method comprising:

• obtaining video data;
• determining, based on the video data, at least one candidate motion vector of a current block;
• constructing a template of the current block, the template including pixel points adjacent to the current block;
• determining at least one reference block of the current block in a reference frame based on the at least one candidate motion vector;
• determining, based on a position of each of the at least one reference block, a respective template prediction region corresponding to each reference block in the reference frame, a position of each template prediction region relative to a corresponding reference block being same as a position of the template relative to the current block;
• determining, based on pixel values in the template prediction region corresponding to each reference block, pixel values in a respective first extension region outside the corresponding template prediction region;
• determining, based on the pixel values in the first extension region, sub-pixel interpolation values of the template prediction region corresponding to each reference block through first interpolation filtering processing;
• searching for a target motion vector through an inter-frame template match process based on the template of the current block and the sub-pixel interpolation values of the template prediction region corresponding to each reference block;
• determining pixel values of a matching block based on the target motion vector;
• encoding the current block into the bitstream based on the pixel values of the matching block;
• and
• transmitting the encoded bitstream.