Deblocking filtering for video coding

An electronic apparatus comprising:

• one or more processing units;
• memory coupled to the one or more processing units;
• and
• a plurality of programs stored in the memory that, when executed by the one or more processing units, cause the electronic apparatus to perform a method of decoding video data comprising:
• decoding a first coding block and a second coding block that shares a common edge with the first coding block on a first picture, wherein decoding the first coding block and the second coding block includes reconstructing a first residual block for the first coding block and a second residual block for the second coding block, respectively;
• determining that the first picture has a first resolution, a first reference picture corresponding to the first coding block has a second resolution, and a second reference picture corresponding to the second coding block has a third resolution;
• deriving a deblocking strength (bS) value based, at least in part, on the first resolution, second resolution, and the third resolution;
• and
• performing in-loop filtering on the reconstructed first residual block and the reconstructed second residual block using a deblocking filter in accordance with the derived bS value.

A non-transitory computer readable storage medium storing a plurality of programs for execution by an electronic apparatus having one or more processing units, wherein the plurality of programs, when executed by the one or more processing units, cause the electronic apparatus to perform a method of decoding video data comprising:

• decoding a first coding block and a second coding block that shares a common edge with the first coding block on a first picture, wherein decoding the first coding block and the second coding block includes reconstructing a first residual block for the first coding block and a second residual block for the second coding block, respectively;
• determining that the first picture has a first resolution, a first reference picture corresponding to the first coding block has a second resolution, and a second reference picture corresponding to the second coding block has a third resolution;
• deriving a deblocking strength (bS) value based, at least in part, on the first resolution, second resolution, and the third resolution;
• and
• performing in-loop filtering on the reconstructed first residual block and the reconstructed second residual block using a deblocking filter in accordance with the derived bS value.