Spatio-temporal motion vector prediction patterns for video coding

A device for coding video data, the device comprising:

• memory configured to store motion vector information;
• and
• processing circuitry coupled to the memory, wherein the processing circuitry is configured to:
• for a first block, in a first picture having a left-to-right coding order, construct a first motion vector predictor list, wherein a first entry in the first motion vector predictor list is based on motion vector information of a left neighboring block to the first block stored in the memory;
• code the first block in the first picture based on the first motion vector predictor list;
• for a second block, in a second picture having a right-to-left coding order, construct a second motion vector predictor list, wherein a first entry in the second motion vector predictor list is based on motion vector information of a right neighboring block to the second block stored in the memory;
• and
• code each block in the second picture in the right-to-left coding order, wherein to code to each block in the second picture the processing circuitry is configured to code the second block in the second picture based on the second motion vector predictor list.

A non-transitory computer-readable storage medium storing instructions thereon that when executed cause one or more processors to:

• for a first block, in a first picture having a left-to-right coding order, construct a first motion vector predictor list, wherein a first entry in the first motion vector predictor list is based on motion vector information of a left neighboring block to the first block;
• code the first block in the first picture based on the first motion vector predictor list;
• for a second block, in a second picture having a right-to-left coding order, construct a second motion vector predictor list, wherein a first entry in the second motion vector predictor list is based on motion vector information of a right neighboring block to the second block;
• and
• code each block in the second picture in the right-to-left coding order, wherein to code each block in the second picture the instructions further cause the one or more processors to code the second block in the second picture based on the second motion vector predictor list.