Method and apparatus of multi-hypothesis in video coding

An apparatus of video coding, the apparatus comprising one or more electronic circuits or processors arranged to:

• receive input data related to a current block in a current picture at a video encoder side or a video bitstream corresponding to compressed data including the current block in the current picture at a video decoder side;
• partition the current block into a first partition and a second partition;
• determine a first candidate for the first partition and a second candidate for the second partition, wherein at least one of the first candidate and the second candidate is derived using a candidate list derived for a normal Merge mode;
• generate an MH prediction by blending a first prediction corresponding to the first candidate and a second prediction corresponding to the second candidate, and wherein the MH prediction is applied to a part of the current block;
• and
• encode the current block or current motion information associated with the current block using at least one of the first candidate and the second candidate at the video encoder side, or decode the current block or the current motion information associated with the current block at the video decoder side using at least one of the first candidate and the second candidate.