Applying non-square transforms to video data

A device for coding video data, the device comprising:

• a memory configured to store the video data;
• and
• a video coder configured to:
• determine a size of a coding unit of the video data representative of a quadtree data structure, wherein the quadtree data structure defines the size for a coding unit of the video data stored in the memory,
• determine that a transform unit of the coding unit is non-square, wherein the transform unit corresponds to a level of a residual quadtree transform (RQT) data structure, and
• apply a non-square transform to the video data, including code data of the transform unit based at least in part on the transform unit being non-square, and including select context for coding the data based on a location of a shorter edge of the transform unit.

A device for coding video data, the device comprising:

• a memory configured to store the video data;
• and
• a video coder configured to:
• determine that a transform unit of a coding unit of the video data is non-square, and
• apply a non-square transform to the video data, including code data of the transform unit based at least in part on the transform unit being non-square, and including selecting context for coding the data based on a location of a shorter edge of the transform unit.