Methods for signaling virtual boundaries and wrap-around motion compensation

A video encoding method, comprising:

• receiving a video sequence;
• setting a virtual boundary for the video sequence;
• disabling in-loop filtering operations across the virtual boundary;
• encoding, into a bitstream, a first parameter indicative of a range by which a position of the virtual boundary is bounded;
• encoding, into the bitstream, a first flag indicating whether a picture resolution is allowed to be changed within the video sequence;
• and
• encoding, into the bitstream, a second flag indicating whether information of the virtual boundary is signaled in a sequence parameter set (SPS),
• wherein when the first flag has a value indicates that the picture resolution is allowed to be changed within the video sequence, the encoded second flag has a value indicating that the information of virtual boundary is not signaled in the SPS.

A method of storing a bitstream associated with a video sequence, the method comprising:

• setting a virtual boundary for the video sequence;
• disabling in-loop filtering operations across the virtual boundary;
• encoding, into a bitstream, a first parameter indicative of a range by which a position of the virtual boundary is bounded;
• encoding, into the bitstream, a first flag indicating whether a picture resolution is allowed to be changed within the video sequence;
• encoding, into the bitstream, a second flag indicating whether information of the virtual boundary is signaled in a sequence parameter set (SPS);
• and
• storing the bitstream in a non-transitory computer-readable storage medium,
• wherein when the first flag has a value indicates that the picture resolution is allowed to be changed within the video sequence, the encoded second flag has a value indicating that the information of virtual boundary is not signaled in the SPS.