Method and apparatus for candidate list pruning

A method, comprising:

• decoding a video signal, comprising:
• performing all motion vector rounding operations on an advanced motion vector prediction motion vector to generate at least one modified candidate;
• determining whether said at least one modified candidate is present in a candidate list;
• adding said at least one modified candidate to the candidate list if said at least one modified candidate is not present in the candidate list or not adding said at least one modified candidate to the candidate list if said at least one modified candidate is present in the candidate list.

An apparatus, comprising:

• a memory, and
• a processor configured to encode a video signal using a candidate list by:
• performing all motion vector rounding operations on an advanced motion vector prediction motion vector to generate at least one modified candidate;
• determining whether said at least one modified candidate is present in the candidate list;
• adding said at least one modified candidate to the candidate list if said at least one modified candidate is not previously present in the candidate list or not adding said at least one modified candidate to the candidate list if said at least one modified candidate is present in the candidate list.

An apparatus, comprising:

• a memory, and
• a processor configured to decode a video signal using a candidate list by:
• performing all motion vector rounding operations on an advanced motion vector prediction motion vector to generate at least one modified candidate;
• determining whether said at least one modified candidate is present in the candidate list;
• adding said at least one modified candidate to the candidate list if said at least one modified candidate is not previously present in the candidate list or not adding said at least one modified candidate to the candidate list if said at least one modified candidate is present in the candidate list.