Content segment detection and replacement

1. A method, comprising:

receiving a request for playback of content comprising at least a first segment, the first segment comprising one or more segment markers;

storing the one or more segment markers in a metadata file associated with the content;

determining an expiration condition of the first segment based on the one or more segment markers, wherein the expiration condition specifies a condition that, if satisfied, causes the first segment to no longer be valid;

replacing the first segment with a second segment based on the expiration condition; and

transmitting the content comprising the second segment in response to the request for playback.

2. The method of claim 1 , further comprising, in response to replacing the first segment with the second segment, updating the metadata file associated with the content.

3. The method of claim 2 , further comprising, maintaining a manifest file associated with the metadata file and updating the manifest file with information related to accessing the second segment.

4. The method of claim 1 , wherein determining the expiration condition of the first segment based on the one or more segment markers comprises identifying the one or more segment markers of the first segment.

5. The method of claim 4 , wherein the one or more segment markers comprises a time expiration marker comprising an associated expiration condition.

6. The method of claim 5 , wherein the associated expiration condition comprises an expiration time.

7. The method of claim 6 , wherein replacing the first segment with the second segment comprises replacing the first segment with the second segment in response to determining that a time at which the request for playback was received is after the expiration time.

8. The method of claim 1 , further comprising storing the content on a computing device configured to allow access to the content through a cloud computing service.

9. The method of claim 1 , further comprising accessing user demographics, wherein the expiration condition is based on a change in the user demographics.

10. The method of claim 9 , wherein the user demographics comprise at least one of a geographic location, a type of user device, or a user preference.

11. The method of claim 1 , wherein the one or more segment markers comprises an identifier marker of the first segment and wherein determining the expiration condition further comprises:

receiving an expiration notification from a content provider, the expiration notification comprising an identifier of the first segment; and

associating the identifier marker of the first segment with the identifier of the first segment.

12. The method of claim 11 , wherein the identifier comprises at least one of a number of instances that the first segment has been replaced or a number of instances that the first segment has been played.

13. The method of claim 11 , further comprising receiving the content from the content provider and storing the content on a user device.

14. The method of claim 13 , further comprising receiving the second segment from the content provider through an internet protocol stream, and wherein receiving the content from the content provider comprises receiving the content through a quadrature amplitude modulation based content distribution network.

15. A method, comprising:

receiving a request for content, the content comprising at least a first segment, the first segment comprising one or more identifiers;

determining an expiration condition of the first segment based on the one or more identifiers;

replacing the first segment with a second segment based on the expiration condition of the first segment; and

transmitting the content comprising the second segment in response to a request for playback.

16. The method of claim 15 , wherein determining the expiration condition comprises identifying the one or more identifiers of the first segment.

17. The method of claim 15 , wherein the one or more identifiers comprises at least one of a number of instances that the first segment has been authorized to be played for a user or a rating value of the first segment.

18. The method of claim 15 , further comprising storing the one or more identifiers in a metadata file associated with the content.

19. The method of claim 18 , further comprising updating the metadata file associated with the content in response to replacing the first segment with the second segment.

20. A method, comprising:

recording content comprising at least a first segment comprising one or more segment markers;

receiving a request for playback of the content;

determining, in response to the request for playback, whether an expiration condition of the first segment is satisfied based on the one or more segment markers;

replacing the first segment with a second segment in response to determining that the expiration condition is satisfied; and

transmitting the content comprising the second segment in response to the request for playback.