Aspects of the disclosure provide a method and an apparatus for video coding. In some examples, an apparatus includes processing circuitry that receives a bitstream. The bitstream includes coded information representing a current bin of a syntax element for a block in a picture. The syntax element corresponds to one of an index of a first prediction mode and an index of a second prediction mode. The processing circuitry determines a context model to decode the coded information. The context model is shared with the index of the first prediction mode and the index of the second prediction mode. The processing circuitry decodes the coded information according to the determined context model to obtain the current bin of the syntax element, and reconstructs the block based on the decoded current bin of the syntax element.

The present disclosure provides systems and methods for processing video content. The method can include: generating, for a coding block, a motion vector (MV) in a first coding mode; and updating the MV by performing a decoder side motion vector refinement (DMVR) process on the coding block.

The present disclosure provides systems and methods for processing video content. The method can include: generating, for a coding block, a motion vector (MV) in a first coding mode; and updating the MV by performing a decoder side motion vector refinement (DMVR) process on the coding block.

Described examples relate to an apparatus comprising a memory for storing image frames and at least one processor. The at least one processor may be configured to receive a plurality of image frames from an image capture device and downsize each of the plurality image frames to generate a plurality of versions of each image frame at a plurality of different sizes. The at least one processor may also be configured to determine alignment information for a first version of a first image frame. The alignment information may include a first alignment vector for identifying image data in a first version of a second image frame that corresponds to image data in the first version of the first image frame. Further, the at least one processor may be configured to determine a first initial alignment vector for identifying image data in a first version of a third image frame based on at least the first alignment vector.

A video encoding system encodes source image data corresponding with an image includes a low resolution pipeline that receives the source image data corresponding with a first coding block in the image. The low resolution pipeline includes a low resolution motion estimation block programmed to generate a first downscaled coding block by downscaling resolution of the source image data corresponding with the first coding block. The first downscaled coding block comprises a first downscaled prediction block corresponding with a first prediction block in the first coding block. The low resolution pipeline may also perform several low resolution motion estimation searches to generate motion vector candidates. The video encoding system also includes a main pipeline that receives the source image data and determines encoding parameters to be used to encode the first coding block based at least partially on the motion vector candidates.

The present disclosure provides a video picture coding method, a video picture decoding method, a coding device, and a decoding device. The method includes: determining a distance between control points for an affine picture block; determining a motion vector difference for the affine picture block, motion vectors of the control points being used to determine the motion vector difference; and performing coding processing on the affine picture block over a size that includes a horizontal length and a vertical length, wherein the horizontal length and the vertical length vary based on the distance between the control points, the motion vector difference, and a motion vector precision.

The present disclosure provides a video picture coding method, a video picture decoding method, a coding device, and a decoding device. The method includes: determining a distance between control points for an affine picture block; determining a motion vector difference for the affine picture block, motion vectors of the control points being used to determine the motion vector difference; and performing coding processing on the affine picture block over a size that includes a horizontal length and a vertical length, wherein the horizontal length and the vertical length vary based on the distance between the control points, the motion vector difference, and a motion vector precision.

Embodiments include systems, methods, and computer-readable media for optimized reduced bitrate encoding for text-based content in video frames. Example methods may include determining that a first segment of video content includes a content scene, determining that a second segment of the video content includes text, and determining a first encoder configuration to encode the first segment of video content, where the first encoder configuration includes a first encoding parameter setting. Example methods may include determining a second encoder configuration to encode the second segment of the video content, where the second encoder configuration includes a second encoding parameter setting, encoding the first segment using the first encoder configuration, and encoding the second segment using the second encoder configuration. The first segment may be encoded at a first bitrate that is greater than a second bitrate at which the second segment is encoded.

Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.

Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.