Conversations on time-shifted content

1. A computer-implemented method executed by one or more processors, the method comprising:

playing a time-shifted content with a timeline in a window of an application, the time-shifted content comprising a stored recording of an event;

determining that a first comment is associated with a first time point of the time-shifted content in a database that associates each of a plurality of comments with a time point of a plurality of time points of the time-shifted content;

presenting, at the first time point of the time-shifted content, the first comment over the time-shifted content in the window;

determining that a second comment is associated with a second time point of the time-shifted content in the database, the second time point being sequential to the first time point; and

presenting, at the second time point of the time-shifted content, the second comment over the time-shifted content in the window.

2. The computer-implemented method of claim 1 , further comprising:

presenting, with the first comment, the first time point over the time-shifted content in the window when the time-shifted content is played to the first time point along the timeline.

3. The computer-implemented method of claim 2 , wherein presenting the first comment and the first time point comprises presenting the first comment and the first time point at a first position when the time-shifted content is played to the first time point of the time-shifted content along the timeline.

4. The computer-implemented method of claim 3 , wherein the first comment and the first time point move over the time-shifted content in the window as the time-shifted content is played along the timeline.

5. The computer-implemented method of claim 3 , wherein the first position is on a top-right corner of the window.

6. The computer-implemented method of claim 3 , further comprising moving, downward, one or more earlier comments presented in the window, the one or more earlier comments associated with corresponding earlier time points of the time-shifted content in the database and the corresponding earlier time points earlier than the first time point.

7. The computer-implemented method of claim 3 , further comprising:

presenting the second comment and the second time point at the first position, when the time-shifted content is played to the second time point of the time-shifted content along the timeline; and

moving the first comment and the first time point to a second position.

8. The computer-implemented method of claim 7 , wherein the second position is immediately below the first position.

9. The computer-implemented method of claim 1 , wherein presenting the first comment and the first time point comprises:

presenting the first comment and the first time point over the time-shifted content on a section of the window that is transparent or partially transparent such that the time-shifted content is visible to a viewer through the section.

10. The computer-implemented method of claim 1 , wherein the time-shifted content is stored in a first computing device, and the database is stored in a second computing device different from the first computing device.

11. A non-transitory computer-readable storage medium comprising instructions operable when executed to perform operations comprising:

playing a time-shifted content with a timeline in a window of an application, the time-shifted content comprising a stored recording of an event;

determining that a first comment is associated with a first time point of the time-shifted content in a database that associates each of a plurality of comments with a time point of a plurality of time points of the time-shifted content;

presenting, at the first time point of the time-shifted content, the first comment over the time-shifted content in the window;

determining that a second comment is associated with a second time point of the time-shifted content in the database, the second time point being sequential to the first time point; and

presenting, at the second time point of the time-shifted content, the second comment over the time-shifted content in the window.

12. The non-transitory computer-readable storage medium of claim 11 , wherein the operations further comprise:

presenting, with the first comment, the first time point over the time-shifted content in the window when the time-shifted content is played to the first time point along the timeline.

13. The non-transitory computer-readable storage medium of claim 12 , wherein presenting the first comment and the first time point comprises presenting the first comment and the first time point at a first position when the time-shifted content is played to the first time point of the time-shifted content along the timeline.

14. The non-transitory computer-readable storage medium of claim 13 , wherein the first comment and the first time point move over the time-shifted content in the window as the time-shifted content is played along the timeline.

15. The non-transitory computer-readable storage medium of claim 13 , wherein the first position is on a top-right corner of the window.

16. The non-transitory computer-readable storage medium of claim 13 , wherein the operations further comprise moving, downward, one or more earlier comments presented in the window, the one or more earlier comments associated with corresponding earlier time points of the time-shifted content in the database and the corresponding earlier time points earlier than the first time point.

17. The non-transitory computer-readable storage medium of claim 13 , wherein the operations further comprise:

presenting the second comment and the second time point at the first position, when the time-shifted content is played to the second time point of the time-shifted content along the timeline; and

moving the first comment and the first time point to a second position.

18. The non-transitory computer-readable storage medium of claim 17 , wherein the second position is immediately below the first position.

19. The non-transitory computer-readable storage medium of claim 11 , wherein presenting the first comment and the first time point comprises:

presenting the first comment and the first time point over the time-shifted content on a section of the window that is transparent or partially transparent such that the time-shifted content is visible to a viewer through the section.

20. The non-transitory computer-readable storage medium of claim 11 , wherein the time-shifted content is stored in a first computing device, and the database is stored in a second computing device different from the first computing device.

21. A system of one or more computers configured to perform operations comprising:

playing a time-shifted content with a timeline in a window of an application, the time-shifted content comprising a stored recording of an event;

determining that a first comment is associated with a first time point of the time-shifted content in a database that associates each of a plurality of comments with a time point of a plurality of time points of the time-shifted content;

presenting, at the first time point of the time-shifted content, the first comment over the time-shifted content in the window;

determining that a second comment is associated with a second time point of the time-shifted content in the database, the second time point being sequential to the first time point; and

presenting, at the second time point of the time-shifted content, the second comment over the time-shifted content in the window.

22. The system of claim 21 , wherein the operations further comprise:

presenting, with the first comment, the first time point over the time-shifted content in the window when the time-shifted content is played to the first time point along the timeline.

23. The system of claim 22 , wherein presenting the first comment and the first time point comprises presenting the first comment and the first time point at a first position when the time-shifted content is played to the first time point of the time-shifted content along the timeline.

24. The system of claim 23 , wherein the first comment and the first time point move over the time-shifted content in the window as the time-shifted content is played along the timeline.

25. The system of claim 23 , wherein the first position is on a top-right corner of the window.

26. The system of claim 23 , wherein the operations further comprise moving, downward, one or more earlier comments presented in the window, the one or more earlier comments associated with corresponding earlier time points of the time-shifted content in the database and the corresponding earlier time points earlier than the first time point.

27. The system of claim 23 , wherein the operations further comprise:

presenting the second comment and the second time point at the first position, when the time-shifted content is played to the second time point of the time-shifted content along the timeline; and

moving the first comment and the first time point to a second position.

28. The system of claim 27 , wherein the second position is immediately below the first position.

29. The system of claim 21 , wherein presenting the first comment and the first time point comprises:

presenting the first comment and the first time point over the time-shifted content on a section of the window that is transparent or partially transparent such that the time-shifted content is visible to a viewer through the section.

30. The system of claim 21 , wherein the time-shifted content is stored in a first computing device, and the database is stored in a second computing device different from the first computing device.