Patent ID: 11871013
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of encoding a video bitstream using at least one processor, the method comprising:
setting a first flag indicating whether a constant picture size is used in a coded video sequence including a current picture;
based on the first flag indicating that the constant picture size is used, encoding the current picture without performing reference picture resampling;
based on the first flag indicating that the constant picture size is not used, setting a second flag indicating whether a conformance window size is signaled; and
based on the second flag indicating that the conformance window size is signaled:
setting the conformance window size, and
signaling a resampling ratio between the current picture and a reference picture based on the conformance window size.