11. A computer program product comprises at least one non-transitory computer- readable storage medium having computer executable program code instructions stored therein, the computer executable program code instructions comprising program code instructions configured, upon execution, to: 

receiving a picture; 

encoding the picture as one or more slices; 

encoding, into a slice header of a slice of the one or more slices, one or more tile identifiers indicative of one or more tile positions for one or more tiles in the slice; and encoding one or more assignments of one or more tile identifier values for the one or more tile identifiers indicative of tile positions in a parameter set file. 

12. A computer program product according to Claim 11, wherein the computer executable program code instructions further comprise program code instructions configured, upon execution, to: 

encoding, into the slice header, a block index relative to a tile of the one or more tiles, wherein the block index comprises a syntax element indicative of a block position for a block within the tile. 

13. A computer program product according to Claim 12 wherein one tile identifier of the one or more tile identifiers is indicative of a tile that comprises a pre-defined block of the slice. 

14. A computer program product according to any of Claims 11 to 13, wherein the computer executable program code instructions further comprise program code instructions configured, upon execution, to: 

constructing one or more motion vectors associated with one or more prediction units in one or more coding units in the one or more tiles, wherein the one or more motion vectors apply in one or more anchor locations derived from one or more anchor location identifiers defining a position relative to the one or more tiles indicated by the one or more tile identifiers. 

15. A computer program product according to any of Claims 11 to 14, wherein the computer executable program code instructions further comprise program code instructions configured, upon execution, to: 

