Apparatus and method for automated temporal compression of multimedia content

• US 20060080591A1
• Filed: 10/12/2004
• Published: 04/13/2006
• Est. Priority Date: 10/12/2004
• Status: Abandoned Application

• Current Assignee: Cyberlink Corporation
• Original Assignee: Cyberlink Corporation
• Inventors: Tseng, Wen Chin, Huang, Ho Chao
• Application Number:
  US10/963,052
• Publication Number:
  US 20060080591A1
• Time in Patent Office: Days
• US Class Current: 715/204
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• CPC Class Codes: G11B 27/105 of operating discs

Abstract

A apparatus and method for automated temporal compression of content is disclosed. The apparatus includes a processor and a temporal compression module. The processor implements the temporal compression module to provide a given work of multimedia content at a plurality of playback rates.

Claims

1. A method of providing a work of multimedia content, the method comprising the steps of:

receiving user input, wherein the user input is included in a group comprising desired playback duration (T_D) and desired average playback rate ({overscore (ν

)}_D);

categorizing segments the multimedia content based at least in part upon information carried by the multimedia content; and

using the user input to determine playback rates for the segments of the multimedia content.

2. The method of claim 1, wherein the user input is desired playback duration (T_D), and wherein responsive to each segment being provided at its playback rate, the aggregate actual playback duration of the work of multimedia content is approximately equal to the desired playback duration.

3. The method of claim 1, wherein a first category of segments are played at a first playback rate, and a second category of segments are played at a second playback rate, the first playback rate being different than the second playback rate.

4. The method of claim 1, wherein the user input is desired playback duration (T_D), and further including the step of:

determining the natural playback duration (T₀) of the work of multimedia content, wherein the natural playback duration is defined as the time span for playing the work at the natural playback rate (ν

₀) of the work, and wherein the natural playback duration (T₀) and the desired playback duration (T_D) are used in the step of using the user input to determine playback rates of the categorized segments.

5. The method of claim 1, further including the steps of:

heirarchizing the categorized segements from a first classification to a last classification;

associating a first playback rate (ν

₁) with the first classification of segments and a second playback rate (ν

₂) with the last classification of segments, wherein the second playback rate (ν

₂) is faster than the first playback rate (ν

₁).

6. The method of claim 5, further including the step of:

associating a third playback rate (ν

₃) with a third classification of segments, the third classification interposing the first and last hierarchized classifications and the third playback rate (ν

₃) being less than the second playback rate (ν

₂).

7. The method of claim 6, wherein the third playback rate (ν

₃) is greater than the first playback rate (ν

₁).

8. The method of claim 1, wherein the user input is desired playback duration (T_D), and further including the steps of:

(a) hierarchizing the categorized segments from a first classification to a last classification;

(b) determining a playback rate for each classification of categorized segment;

(c) determining the playback duration for each classification of categorized segments;

(d) aggregating the playback duration for each classification of categorized segments; and

(e) determining whether the aggregated playback duration is within a predetermined range of the desired playback time.

9. The method of claim 8, wherein responsive to determining the aggregate playback time is not within the predetermined range of the desired playback time, further including the steps of:

(f) determining at least one new playback rate for at least one classification of the categorized segments;

(g) determining the playback time for each classification of categorized segments having a new playback rate; and

(h) repeating steps (d)-(g) until the aggregate playback duration is within the predetermined range of the desired playback duration.

10. An apparatus for providing multimedia content, the apparatus comprising:

a memory have a temporal compression module stored therein;

a processor in communication with the memory, the processor adapted to receive a user input for a given work of multimedia content, responsive to receiving the user input, the processor implements the temporal compression to provide the given work of multimedia content at a plurality of playback rates, wherein the user input is included in a group comprising desired playback duration (T_D) and desired average playback rate ({overscore (ν

)}_D).

11. The apparatus of claim 10, wherein the user input is desired average playback rate ({overscore (ν

)}_D).

12. The apparatus of claim 10, wherein the apparatus is a computer.

13. The apparatus of claim 10, wherein the given work of multimedia content includes frames of information, and wherein the memory further includes an analyzing module for analyzing content within the frames.

14. The apparatus of claim 13, wherein the user input is desired playback duration (T_D), and wherein the temporal compression module determines whether frames of the given work should not be provided, wherein by not providing frames of the given work, the actual playback duration of the given work approximately matches desired playback duration.

15. The apparatus of claim 14, wherein the frames that are not provided include frames of commercials.

16. The apparatus of claim 14, wherein the frames that are not provided includes at least one frame selected from a set of frames consisting of frames of trailers, frames of titles, and frames of credits.

17. The apparatus of claim 13, wherein the given work of multimedia content includes video content, wherein the temporal compression module compresses frames based upon the amount of motion depicted within the frames.

18. The apparatus of claim 17, wherein the temporal compression module determines the amount of motion depicted within a given frames based at least in part upon motion vectors associated with the frame.

19. The apparatus of claim 17, wherein the given work of multimedia content includes audio content, wherein the temporal compression module compresses frames based upon the audio content.

20. A program embodied in a computer readable medium, the program comprising:

logic configured to receive a user input, wherein the user input is included in a group comprising desired playback duration (T_D) and desired average playback rate ({overscore (ν

)}_D);

logic configured to categorize segments the multimedia content based at least in part upon information carried by the multimedia content; and

logic configured to use the user input to determine playback rates for the segments of the multimedia content.

21. The program of claim 20, wherein the user input is desired playback duration, and wherein responsive to each segment being provided at its playback rate, the aggregate actual playback duration of the work of multimedia content is approximately equal to the desired playback duration.

22. The program of claim 20, wherein the user input is desired playback duration, and further including:

logic configured to determine the natural playback duration (T₀) of the work of multimedia content, wherein the natural playback duration is defined as the time span for playing the work at the natural playback rate (ν

₀) of the work, and wherein the natural playback duration (T₀) and the desired playback duration (T_D) are used in the step of determining the playback rates of the categorized segments.

23. The program of claim 20, further including:

logic configured to heirarchize the categorized segements from a first classification to a last classification;

logic configured to associate a first playback rate (ν

₁) with the first classification of segments and a second playback rate (ν

₂) with the last classification of segments, wherein the second playback rate (ν

₂) is faster than the first playback rate (ν

₁).

24. The program of claim 23, further including:

logic configured to associate a third playback rate (ν

₃) with a third classification of segments, the third classification interposing the first and last hierarchized classifications and the third playback rate (ν

₃) being less than the second playback rate (ν

₂).

25. The program of claim 24, wherein the third playback rate (ν

₃) is greater than the first playback rate (ν

₁).

26. The program of claim 20, wherein the user input is desired playback duration, and further including:

(a) logic configured to hierarchize the categorized segments from a first classification to a last classification;

(b) logic configured to determine a playback rate for each classification of categorized segment;

(c) logic configured to determine the playback duration for each classification of categorized segments;

(d) logic configured to aggregate the playback duration for each classification of categorized segments; and

(e) logic configured to determine whether the aggregated playback duration is within a predetermined range of the desired playback time.

27. The method of claim 26, further including:

(f) logic configured to determine at least one new playback rate for at least one classification of the categorized segments;

(g) logic configured to determine the playback time for each classification of categorized segments having a new playback rate; and

(h) logic configured to determine whether to repeat logic (d)-(g) until the aggregate playback duration is within the predetermined range of the desired playback duration, wherein responsive to determining the aggregate playback time is not within the predetermined range of the desired playback time the logic of (d)-(g) is repeated.