MOST PROBABLE MODE SIGNALING WITH MULTIPLE REFERENCE LINE INTRA PREDICTION

1 . A method, comprising:

parsing a video bitstream to determine whether multiple reference line intra coding is used;

decoding a most probable mode flag based on said determination using a CABAC context to determine an intra coding mode; and,

decoding said video bitstream based on said intra coding mode wherein non-MPM modes are used with farther two reference layers.

2 . An apparatus, comprising:

a processor, configured to:

parse a video bitstream to determine whether multiple reference line intra coding is used;

decode a most probable mode flag based on said determination using a CABAC context to determine an intra coding mode; and,

decode said video bitstream based on said intra coding mode wherein non-MPM modes are used with farther two reference layers.

3 . A method, comprising:

encoding a flag indicative of multiple reference line intra video coding with a CABAC context;

encoding an intra coding mode index representative of an intra coding mode used; and,

encoding a video bitstream with said encoded flag and intra coding mode index using said intra coding mode wherein non-MPM modes are used with farther two reference layers.

4 . An apparatus, comprising:

a processor, configured to:

encode a flag indicative of multiple reference line intra video coding with a CABAC context;

encode an intra coding mode index representative of an intra coding mode used; and,

encode a video bitstream with said encoded flag and intra coding mode index using said intra coding mode wherein non-MPM modes are used with farther two reference layers.

5 . The method of claim 3 , wherein said flag indicative of multiple reference line intra video coding has a value of one.

6 . The method of claim 3 , wherein said index representative of an intra coding mode used is binary encoded.

7 . The method, of claim 6 , wherein bins of said index are bypass encoded using CABAC.

8 . The method of claim 1 , wherein bins of said index are bypass decoded using CABAC.

9 . The method of claim 1 , wherein a CABAC probability parameter is initialized with a high probability model.

10 . The method of claim 9 , wherein said most probable mode flag is set to a value of one.

11 . The method of claim 1 , wherein said most probable mode flag is decoded regardless of a value of a multiple reference line intra coding index.

12 . A device comprising:

an apparatus according to claim 2 ; and

at least one of (i) an antenna configured to receive a signal, the signal including the video block, (ii) a band limiter configured to limit the received signal to a band of frequencies that includes the video block, and (iii) a display configured to display an output representative of a video block.

13 . A non-transitory computer readable medium containing data content generated according to the method of claim 3 , for playback using a processor.

14 . A computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the method of claim 1 .

15 . A computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the method of claim 3 .

16 . The apparatus of claim 4 , wherein said flag indicative of multiple reference line intra video coding has a value of one.

17 . The apparatus of claim 4 , wherein said index representative of an intra coding mode used is binary encoded.

18 . The apparatus of claim 17 , wherein bins of said index are bypass encoded using CABAC.

19 . The apparatus of claim 2 , wherein bins of said index are bypass decoded using CABAC.

20 . The apparatus of claim 2 , wherein a CABAC probability parameter is initialized with a high probability model.