Buffer restriction during motion vector prediction for video coding

A device for coding video data, the device comprising:

• a memory configured to store video data;
• and
• one or more processors implemented in circuitry and configured to:
• construct a motion vector predictor candidate list for a current block of the video data, the motion vector predictor candidate list identifying one or more blocks that are non-adjacent to the current block, each of the non-adjacent blocks being in a coding tree unit (CTU) including the current block or a line buffer including the current block;
• select a motion vector predictor from one of the blocks that is non-adjacent to the current block and in the motion vector predictor candidate list;
• and
• code motion information of the current block using the motion vector predictor.

A computer-readable storage medium having stored thereon instructions that, when executed, cause a processor to:

• construct a motion vector predictor candidate list for a current block of video data, the motion vector predictor candidate list identifying one or more blocks that are non-adjacent to the current block, each of the non-adjacent blocks being in a coding tree unit (CTU) including the current block or a line buffer including the current block;
• select a motion vector predictor from one of the blocks that is non-adjacent to the current block and in the motion vector predictor candidate list;
• and
• code motion information of the current block using the motion vector predictor.

A device for coding video data, the device comprising:

• means for constructing a motion vector predictor candidate list for a current block of video data, the motion vector predictor candidate list identifying one or more blocks that are non-adjacent to the current block, each of the non-adjacent blocks being in a coding tree unit (CTU) including the current block or a line buffer including the current block;
• means for selecting a motion vector predictor from one of the blocks that is non-adjacent to the current block and in the motion vector predictor candidate list;
• and
• means for coding motion information of the current block using the motion vector predictor.