Controlling modes of sub-title presentation

1. One or more non-transitory computer-readable storage mediums storing one or more sequences of instructions for creating a sub-titles stream or file composed of sub-titles elements, wherein execution of the one or more sequences of instructions by one or more processors causes:

for each sub-titles element in said sub-titles elements, performing:

inserting a sub-titles element into the sub-titles stream or file;

determining whether at least one end-of-block condition, of a set of two or more end-of-conditions, related to a mode of presentation of sub-titles is satisfied by the inserted sub-titles element; and

upon satisfying said at least one end-of-block condition, inserting into the sub-titles stream or file a datum representative of an end of a block according to each mode of presentation of sub-titles that is satisfied by the inserted sub-titles element.

2. The one or more non-transitory computer-readable storage mediums of claim 1 , wherein said at least one end-of-block condition comprises a detection of at least one predefined character marking an end of the block.

3. The one or more non-transitory computer-readable storage mediums of claim 2 , wherein said at least one predefined character corresponds to or comprises a full stop, a comma, a semi-colon, or a punctuation character.

4. The one or more non-transitory computer-readable storage mediums of claim 1 , wherein the sub-titles stream complies with the MPEG-TS standard.

5. The one or more non-transitory computer-readable storage mediums of claim 1 , wherein the file complies with at least one standard based on W3C TTML.

6. The one or more non-transitory computer-readable storage mediums of claim 5 , wherein a datum representative of the end of a block is written in a specific tag.

7. One or more non-transitory computer-readable storage mediums storing one or more sequences of instructions for presenting a sub-titles stream or file on the terminal of a user, wherein execution of the one or more sequences of instructions by one or more processors causes:

selecting on the terminal a mode of presentation of sub-titles;

reading at least one sub-titles block from the sub-titles stream or file, wherein the sub-titles stream or file comprises a plurality of datums that are collectively representative of an end of a block for two or more modes of presentation in the sub-titles stream or file; and

presenting on the terminal the at least one sub-titles block according to the selected mode of presentation.

8. The one or more non-transitory computer-readable storage mediums of claim 7 , wherein reading the at least one sub-titles block comprises:

reading of the sub-titles stream or file up to a datum representative of the end of a sub-titles block according to the selected mode of presentation of sub-titles.

9. The one or more non-transitory computer-readable storage mediums of claim 7 , wherein the sub-titles stream complies with the MPEG-TS standard.

10. The one or more non-transitory computer-readable storage mediums of claim 7 , wherein the file complies with at least one standard based on W3C TTML.

11. The one or more non-transitory computer-readable storage mediums of claim 10 , wherein a datum representative of the end of a block is written in a specific tag.

12. An apparatus for creating a sub-titles stream or file composed of sub-titles elements, comprising:

one or more processors; and

one or more non-transitory computer-readable storage mediums storing one or more sequences of instructions, which when executed, cause:

for each sub-titles element in said sub-titles elements, performing:

inserting a sub-titles element into the sub-titles stream or file;

determining whether at least one end-of-block condition, of a set of two or more end-of-conditions, related to a mode of presentation of sub-titles is satisfied by the inserted sub-titles element; and

upon satisfying said at least one end-of-block condition, inserting into the sub-titles stream or file a datum representative of an end of a block according to each mode of presentation of sub-titles that is satisfied by the inserted sub-titles element.

13. The apparatus of claim 12 , wherein said at least one end-of-block condition comprises a detection of at least one predefined character marking an end of the block.

14. The apparatus of claim 13 , wherein said at least one predefined character corresponds to or comprises a full stop, a comma, a semi-colon, or a punctuation character.

15. The apparatus of claim 12 , wherein the sub-titles stream complies with the MPEG-TS standard.

16. The apparatus of claim 12 , wherein the file complies with at least one standard based on W3C TTML.

17. The apparatus of claim 16 , wherein a datum representative of the end of a block is written in a specific tag.

18. An apparatus for presenting a sub-titles stream or file on the terminal of a user, comprising:

one or more processors; and

one or more non-transitory computer-readable storage mediums storing one or more sequences of instructions, which when executed, cause:

selecting on the terminal a mode of presentation of sub-titles;

reading at least one sub-titles block from the sub-titles stream or file, wherein the sub-titles stream or file comprises a plurality of datums that are collectively representative of an end of a block for two or more modes of presentation in the sub-titles stream or file; and

presenting on the terminal the at least one sub-titles block according to the selected mode of presentation.

19. The apparatus of claim 18 , wherein reading the at least one sub-titles block comprises:

reading of the sub-titles stream or file up to a datum representative of the end of a sub-titles block according to the selected mode of presentation of sub-titles.

20. The apparatus of claim 18 , wherein the sub-titles stream complies with the MPEG-TS standard.

21. The apparatus of claim 18 , wherein the file complies with at least one standard based on W3C TTML.

22. The apparatus of claim 21 , wherein a datum representative of the end of a block is written in a specific tag.