Systems, methods, and apparatus to identify linear and non-linear media presentations

1. A method to automatically determine whether a media presentation is a linear media presentation or a non-linear media presentation, the method comprising:

generating, by executing an instruction with a processor, a reference log including first media identifiers of first media and first times at which the first media was presented as a linear media presentation;

generating, by executing an instruction with the processor, a media presentation log for the media presentation of second media, the media presentation log including second media identifiers of the second media and second times at which the second media was presented;

comparing, by executing an instruction with the processor, the media presentation log to the reference log to determine a duration associated with matches between ones of the first media identifiers and ones of the second media identifiers, the matches between the ones of the first media identifiers and the ones of the second media identifiers being in a same order in the media presentation log and in the reference log, the duration based on at least one of the first times or the second times; and

classifying, by executing an instruction with the processor, the media presentation of the second media as a linear media presentation when the duration satisfies a threshold.

2. The method as defined in claim 1 , wherein the first media includes first program media and first non-program media, and the second media includes second program media and second non-program media.

3. The method as defined in claim 1 , further including:

generating the media presentation log by identifying a first portion of the second media as program media and a second portion of the second media as non-program media; and

storing in the media presentation log the second media identifiers, the second times at which the second media was presented, and a media type indicating whether the corresponding portion of the second media is the program media or the non-program media.

4. The method as defined in claim 3 , wherein the identifying of the first portion of the second media as program media includes at least one of comparing a signature of the first portion of the second media to a reference signature stored in a signature database, decoding a watermark in the first portion of the second media, detecting a blank frame, detecting a cue tone, or identifying a logo.

5. The method as defined in claim 3 , wherein the identifying of the first portion of the second media as program media includes identifying the first portion of the second media as program media when a code present in the first portion of the second media matches a reference code associated with reference program media.

6. The method as defined in claim 3 , wherein the identifying of the first portion of the second media as program media includes identifying the first portion of the second media as program media when a signature generated based on the first portion of the second media matches a reference signature associated with reference program media.

7. The method as defined in claim 3 , wherein the identifying of the second portion of the second media as non-program media includes identifying the second portion of the second media as non-program media when the second portion of the second media is presented following at least one of a blank frame or a cue tone present in the second media.

8. The method as defined in claim 3 , wherein the identifying of the first portion of the second media as program media includes identifying the first portion of the second media as program media when a logo is detected in the first portion of the second media.

9. The method as defined in claim 1 , further including:

classifying the media presentation of the second media as a non-linear media presentation when the duration does not satisfy the threshold.

10. The method as defined in claim 1 , wherein the comparing of the media presentation log to the reference log includes comparing the first times to the second times.

11. An apparatus, comprising:

a log generator to:

generate a reference log including first media identifiers of first media and first times at which the first media was presented as a linear media presentation;

generate a media presentation log for a media presentation of second media, the media presentation log including second media identifiers of the second media and second times at which the second media was presented;

a log comparator to compare the media presentation log to the reference log to determine a duration associated with matches between ones of the first media identifiers and ones of the second media identifiers, the matches between the ones of the first media identifiers and the ones of the second media identifiers being in a same order in the media presentation log and the reference log, the duration based on at least one of the first times or the second times; and

a presentation classifier to classify the media presentation of the second media as a linear media presentation when the duration satisfies a threshold.

12. The apparatus as defined in claim 11 , further including a log collector to receive the media presentation log.

13. The apparatus as defined in claim 11 , further including a lineup interpreter to identify, from lineup information, the first media based on the first times at which the first media was presented and a media source of the first media.

14. The apparatus as defined in claim 11 , wherein the log generator includes at least one of a code matcher, a signature matcher, a cue tone identifier, a blank frame identifier, or a logo identifier, the log generator to generate a reference log entry including at least one of the first media identifiers of the first media based on an output of the at least one of the code matcher, the signature matcher, the cue tone identifier, the blank frame identifier, or the logo identifier.

15. The apparatus as defined in claim 11 , further including a ratings calculator to determine at least one of a linear presentation audience or a non-linear presentation audience for the second media.

16. A tangible machine readable storage medium comprising machine readable instructions which, when executed, cause a logic circuit to at least:

generate a reference log including first media identifiers of first media and first times at which the first media was presented as a linear media presentation;

generate a media presentation log for a media presentation of second media, the media presentation log including second media identifiers of the second media and second times at which the second media was presented;

compare the media presentation log to the reference log to determine a duration associated with matches between ones of the first media identifiers and ones of the second media identifiers, the matches between the ones of the first media identifiers and the ones of the second media identifiers being in a same order in the media presentation log and in the reference log, the duration based on at least one of the first times or the second times; and

classify the media presentation of the second media as a linear media presentation when the duration satisfies a threshold.

17. The storage medium as defined in claim 16 , wherein the first media includes first program media and first non-program media, and the second media includes second program media and second non-program media.

18. The storage medium as defined in claim 16 , wherein the instructions are further to cause the logic circuit to generate the media presentation log by:

identifying a first portion of the second media as program media and a second portion of the second media as non-program media; and

storing in the media presentation log the second media identifiers, the second times at which the second media was presented, and a media type indicating whether the corresponding portion of the second media is the program media or the non-program media.

19. The storage medium as defined in claim 16 , wherein the instructions are further to cause the logic circuit to compare the media presentation log to the reference log by comparing the first times.

20. The apparatus of claim 11 , wherein the first media includes first program media and first non-program media, and the second media includes second program media and second non-program media.

21. The apparatus of claim 11 , wherein the log generator is to generate the media presentation log by identifying a first portion of the second media as program media and a second portion of the second media as non-program media.

22. The apparatus of claim 11 , wherein the presentation classifier is to classify the media presentation of the second media as a non-linear media presentation when the duration does not satisfy the threshold.

23. The storage medium as defined in claim 18 , wherein the identifying of the first portion of the second media as program media includes at least one of comparing a signature of the first portion of the second media to a reference signature stored in a signature database, decoding a watermark in the first portion of the second media, detecting a blank frame, detecting a cue tone, or identifying a logo.

24. The storage medium as defined in claim 18 , wherein the identifying of the first portion of the second media as program media includes identifying the first portion of the second media as program media when a code present in the first portion of the second media matches a reference code associated with reference program media.

25. The storage medium as defined in claim 18 , wherein the identifying of the first portion of the second media as program media includes identifying the first portion of the second media as program media when a signature generated based on the first portion of the second media matches a reference signature associated with reference program media.

26. The storage medium as defined in claim 18 , wherein the identifying of the second portion of the second media as non-program media includes identifying the second portion of the second media as non-program media when the second portion of the second media is presented following at least one of a blank frame or a cue tone present in the second media.

27. The storage medium as defined in claim 18 , wherein the identifying of the first portion of the second media as program media includes identifying the first portion of the second media as program media when a logo is detected in the first portion of the second media.

28. The storage medium as defined in claim 16 , wherein the instructions are further to cause the logic circuit to classify the media presentation of the second media as a non-linear media presentation when the duration does not satisfy the threshold.