Merge signaling and loop filter on/off signaling

A device for decoding video comprising:

• a processor configured to:
• receive an enable syntax element in an encoded bitstream, wherein the enable syntax element indicates whether a loop filter is turned on or turned off for a group of video blocks;
• and
• receive one or more additional syntax elements identifying parameters for the loop filter for the group of video blocks in response to the enable syntax element indicating the loop filter is turned on for the group of video blocks;
• and
• perform the loop filter for the group of video blocks based on the received enable syntax element.

A method of encoding video, the method comprising:

• generating, for inclusion in an encoded bitstream, an enable syntax element, wherein the enable syntax element indicates whether a loop filter is turned on or turned off for a group of video blocks;
• generating one or more additional syntax elements identifying parameters for the loop filter for the group of video blocks in response to the enable syntax element indicating the loop filter is turned on for the group of video blocks;
• and
• performing the loop filter for the group of video blocks according to the enable syntax element.

A device for encoding video comprising:

• a processor configured to:
• generate, for inclusion in an encoded bitstream, an enable syntax element, wherein the enable syntax element indicates whether a loop filter is turned on or turned off for a group of video blocks;
• generate one or more additional syntax elements identifying parameters for the loop filter for the group of video blocks in response to the enable syntax element indicating the loop filter is turned on for the group of video blocks;
• and
• performing the loop filter for the group of video blocks according to the enable syntax element.

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

• generate, for inclusion in an encoded bitstream, an enable syntax element, wherein the enable syntax element indicates whether a loop filter is turned on or turned off for a group of video blocks;
• generate one or more additional syntax elements identifying parameters for the loop filter for the group of video blocks in response to the enable syntax element indicating the loop filter is turned on for the group of video blocks;
• and
• perform the loop filter for the group of video blocks according to the enable syntax element.

A device of encoding video, the device comprising:

• means for generating, for inclusion in an encoded bitstream, an enable syntax element, wherein the enable syntax element indicates whether a loop filter is turned on or turned off for a group of video blocks;
• means for generating one or more additional syntax elements identifying parameters for the loop filter for the group of video blocks in response to the enable syntax element indicating the loop filter is turned on for the group of video blocks;
• and
• means for performing the loop filter for the group of video blocks according to the enable syntax element.

A method of coding video, the method comprising:

• determining whether a type of filtering is enabled for a video unit adjacent left to a current video unit;
• in response to determining that the type of filtering is enabled for the video unit adjacent left to the current video block, determining whether a filter parameter for the current video unit is equal to a filter parameter for the adjacent left video unit;
• and
• in direct response to determining that the filter parameter for the current video unit is not equal to the filter parameter for the adjacent left video unit, determining whether the filter parameter for the current video unit is equal to a filter parameter for an adjacent upper video unit.