Non-MPM mode coding for intra prediction in video coding

A system comprising one or more computers and one or more storage devices storing instructions that are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising:

• determining, by one or more processors, an intra-coding process applied to pixels in a frame of media;
• determining, by the one or more processors, whether the intra-coding process corresponds to at least one of most probable modes;
• in response to determining the intra-coding process does not correspond to the at least one of the most probable modes, extracting, by the one or more processors, four angular prediction modes from a list of prediction modes;
• determining, by the one or more processors, a set of candidate modes based on the four angular prediction modes;
• and
• determining, by the one or more processors, a pre-defined order of the set of candidate modes, wherein each candidate mode of the set of candidate modes is included in a ranked order and signaled with a particular fixed length coding, and wherein a length of the particular fixed length coding increases based on the pre-defined order of the set of candidate modes.

One or more non-transitory computer-readable media comprising instructions stored thereon that are executable by one or more processing devices and upon such execution cause the one or more processing devices to perform operations comprising:

• determining, by one or more processors, an intra-coding process applied to pixels in a frame of media;
• determining, by the one or more processors, whether the intra-coding process corresponds to at least one of most probable modes;
• in response to determining the intra-coding process does not correspond to the at least one of the most probable modes, extracting, by the one or more processors, four angular prediction modes from a list of prediction modes;
• determining, by the one or more processors, a set of candidate modes based on the four angular prediction modes;
• and
• determining, by the one or more processors, a pre-defined order of the set of candidate modes, wherein each candidate mode of the set of candidate modes is included in a ranked order and signaled with a particular fixed length coding, and wherein a length of the particular fixed length coding increases based on the pre-defined order of the set of candidate modes.