Methods and apparatus to monitor media

1. An apparatus to monitor media, the apparatus comprising:

first means for performing a first mapping of a first media identifier and a first timestamp to a second media identifier in a look-up table, the first media identifier and the first timestamp based on media obtained from a server, the first media identifier to identify the media, the second media identifier from the server, the second media identifier to identify the media;

means for determining a third media identifier and a second timestamp based on media monitoring information obtained from the server, the media monitoring information obtained from the server in response to an access of the media by a media device, the third media identifier to identify the media accessed by the media device;

second means for performing a second mapping of the third media identifier and the second timestamp to the first media identifier and the first timestamp in the look-up table based on the third media identifier corresponding to the second media identifier; and

means for crediting access of the media to the media device based on the second mapping.

2. The apparatus of claim 1 , wherein the server is associated with a content publisher and the second media identifier is a publisher asset identifier that identifies the content publisher.

3. The apparatus of claim 1 , wherein the means for determining is to:

detect metadata in a portion of the media;

decode the metadata to generate the first media identifier in response to a detection of the metadata;

compare the first media identifier to the third media identifier; and

identify the portion of the media based on the comparison.

4. The apparatus of claim 3 , wherein the first media identifier and the third media identifier are codes or watermarks.

5. The apparatus of claim 1 , wherein the means for determining is to:

detect whether metadata is included in a portion of the media;

extract a first signature from the portion of the media in response to a non-detection of the metadata;

compare the first signature to a second signature; and

identify the portion of the media based on the comparison.

6. The apparatus of claim 1 , wherein the media monitoring information is first media monitoring information, and further including means for validating the first media monitoring information, the means for validating to:

obtain second media monitoring information from a database based on at least one of metering data, audit data, or census data;

compare the first media monitoring information to the second media monitoring information; and

generate an alert to not report the first media monitoring information in response to a determination that at least a first portion of the first media monitoring information does not match at least a second portion of the second media monitoring information.

7. The apparatus of claim 6 , wherein the means for validating is to:

compare a first media presentation session duration and a second media presentation session duration, the first media presentation session duration based on the first media monitoring information, the second media presentation session duration based on the second media monitoring information; and

compare the first media identifier to the second media identifier, the second media identifier based on the second media monitoring information.

8. A non-transitory computer readable storage medium comprising instructions that, when executed, cause a machine to at least:

perform a first mapping of a first media identifier and a first timestamp to a second media identifier in a look-up table, the first media identifier and the first timestamp based on media obtained from a server, the first media identifier to identify the media, the second media identifier from the server, the second media identifier to identify the media;

determine a third media identifier and a second timestamp based on media monitoring information obtained from the server, the media monitoring information obtained from the server in response to an access of the media by a media device, the third media identifier to identify the media accessed by the media device;

perform a second mapping of the third media identifier and the second timestamp to the first media identifier and the first timestamp in the look-up table based on the third media identifier corresponding to the second media identifier; and

credit access of the media to the media device based on the second mapping.

9. The non-transitory computer readable storage medium of claim 8 , wherein the server is associated with a content publisher and the second media identifier is a publisher asset identifier that identifies the content publisher.

10. The non-transitory computer readable storage medium of claim 8 , wherein the instructions, when executed, cause the machine to:

detect metadata in a portion of the media;

decode the metadata to generate the first media identifier in response to a detection of the metadata;

compare the first media identifier to the third media identifier; and

identify the portion of the media based on the comparison.

11. The non-transitory computer readable storage medium of claim 10 , wherein the first media identifier and the third media identifier are codes or watermarks.

12. The non-transitory computer readable storage medium of claim 8 , wherein the instructions, when executed, cause the machine to:

detect whether metadata is included in a portion of the media;

extract a first signature from the portion of the media in response to a non-detection of the metadata;

compare the first signature to a second signature; and

identify the portion of the media based on the comparison.

13. The non-transitory computer readable storage medium of claim 8 , wherein the media monitoring information is first media monitoring information, and instructions, when executed, cause the machine to:

obtain second media monitoring information from a database based on at least one of metering data, audit data, or census data;

compare the first media monitoring information to the second media monitoring information; and

propagate an alert to not report the first media monitoring information in response to a determination that at least a first portion of the first media monitoring information does not match at least a second portion of the second media monitoring information.

14. The non-transitory computer readable storage medium of claim 13 , wherein the instructions, when executed, cause the machine to:

compare a first media presentation session duration and a second media presentation session duration, the first media presentation session duration based on the first media monitoring information, the second media presentation session duration based on the second media monitoring information; and

compare the first media identifier to the second media identifier, the second media identifier based on the second media monitoring information.

15. A method to monitor media, the method comprising:

performing a first mapping of a first media identifier and a first timestamp to a second media identifier in a look-up table, the first media identifier and the first timestamp based on media obtained from a server, the first media identifier to identify the media, the second media identifier from the server, the second media identifier to identify the media;

determining a third media identifier and a second timestamp based on media monitoring information obtained from the server, the media monitoring information obtained from the server in response to an access of the media by a media device, the third media identifier to identify the media accessed by the media device;

performing a second mapping of the third media identifier and the second timestamp to the first media identifier and the first timestamp in the look-up table based on the third media identifier corresponding to the second media identifier; and

crediting access of the media to the media device based on the second mapping.

16. The method of claim 15 , wherein the server is associated with a content publisher and the second media identifier is a publisher asset identifier that identifies the content publisher.

17. The method of claim 15 , further including:

detecting metadata in a portion of the media;

decoding the metadata to generate the first media identifier in response to detecting the metadata;

comparing the first media identifier to the third media identifier; and

identifying the portion of the media based on the comparison.

18. The method of claim 17 , wherein the first media identifier and the third media identifier are codes or watermarks.

19. The method of claim 15 , further including:

detecting whether metadata is included in a portion of the media;

extracting a first signature from the portion of the media in response to a non-detection of the metadata;

comparing the first signature to a second signature; and

identifying the portion of the media based on the comparison.

20. The method of claim 15 , wherein the media monitoring information is first media monitoring information, and further including:

obtaining second media monitoring information from a database based on at least one of metering data, audit data, or census data;

comparing the first media monitoring information to the second media monitoring information; and

transmitting an alert to not report the first media monitoring information in response to determining that at least a first portion of the first media monitoring information does not match at least a second portion of the second media monitoring information.

21. The method of claim 20 , wherein comparing the first media monitoring information to the second media monitoring information includes:

comparing a first media presentation session duration and a second media presentation session duration, the first media presentation session duration based on the first media monitoring information, the second media presentation session duration based on the second media monitoring information; and

comparing the first media identifier to the second media identifier, the second media identifier based on the second media monitoring information.