Spatial proximity context entropy coding

A method comprising:

• identifying a plurality of transform coefficients for a current block of a current frame of a video stream, wherein each transform coefficient from the plurality of transform coefficients has a respective position in a scan order and a respective location in a transform coefficient matrix;
• entropy coding each transform coefficient from the plurality of transform coefficients in scan order by:
• identifying a current transform coefficient from the plurality of transform coefficients, the current transform coefficient having a position in the scan order and a location in the transform coefficient matrix,
• identifying a plurality of context coefficients from the plurality of transform coefficients based on the location of the current transform coefficient and a relative location of each transform coefficient from the plurality of transform coefficients independently of the position of the current transform coefficient in the scan order and a relative position of each transform coefficient from the plurality of transform coefficients in the scan order, wherein each context coefficient from the plurality of context coefficients is spatially proximate to the current transform coefficient and is available for entropy coding the current transform coefficient, and wherein the plurality of transform coefficients are quantized at more than one bit,
• identifying an entropy coding probability for the current transform coefficient based on the plurality of context coefficients,
• identifying a token representing the current transform coefficient based on entropy coding probability, and
• including the token in an output bitstream;
• and
• storing or transmitting the output bitstream.