Template-based edit decision list management system

• US 6,016,380 A
• Filed: 09/24/1992
• Issued: 01/18/2000
• Est. Priority Date: 09/24/1992
• Status: Expired due to Fees

• Current Assignee: Avid Technology Incorporated
• Original Assignee: Avid Technology Incorporated
• Inventors: Norton, Mark J.
• Primary Examiner(s): NGUYEN, HUY THANH
• Application Number:
  US07/950,787
• Time in Patent Office: 2,672 Days
• Field of Search: 358/335, 358/311, 358/342, 348/552, 348/578, 348/458, 360/13, 360/14.1, 395/600, 395/162, 395/154, 395/117, 250/566, 386/46, 386/55, 386/65, 386/52
• US Class Current: 386/281
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/022 Electronic editing of analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/028 with computer assistance
• CPC Class Codes: G11B 27/032 on tapes G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D

Abstract

A computer-based system for generating a video edit decision list, which tabulates video editing events and video synchronization points corresponding to the video editing events. The invention accepts a sequence of video and audio manipulations produced by a digital video editing system, each manipulation effecting a particular video editing event, and generates, based on the manipulation sequence, a list of video editing events and corresponding synchronization points. The invention then conforms the list to a user-specified format selected from a plurality of video edit decision list format templates, provided by the system, which each specify a model for defining video editing events distinctly in that format, and then the video edit decision list is output in the user-specified format. The invention is adapted to also convert a video edit decision list from a first format to a second, user-specified format; and further is adapted to generate a sequence of video and audio manipulations to be used by a digital video editor for editing a video, based on a video edit decision list.

Claims

1. A computer system for generating a video edit decision list comprising a formatted list of computer instructions for an edit controller for assembling a video program, wherein each instruction defines source material and a destination of a video editing event, the computer system comprising:

input means for receiving a representation of the video program as a sequence of edit events produced by a digital video editing system,

selecting means, connected to the input means, for selecting one of a plurality of video edit decision list format specifiers, wherein each format specifier specifies a syntax of a video edit decision list of a different machine,

generating means for generating, according to the sequence of edit events, the formatted list of computer instructions in the syntax specified by the selected video edit decision list format specifier, and

output means, connected to the selecting means, for outputting the formatted list as the video edit decision list for use by the edit controller for assembling the video program.

2. The system of claim 1 further comprising storage means for storing the plurality of format specifiers in a template library.

3. The system according to claim 2, wherein the selecting means selects said selected one of said format specifiers from said template library.

4. The system of claim 1 wherein said output means comprises means for printing the video edit decision list.

5. The system of claim 1 wherein said output means comprises means for storing the video edit decision list.

6. The system of claim 1 wherein said output means comprises means for sending the video edit decision list to an output port.

7. The system of claim 1, wherein said input means includes:

video means for accepting a video to be edited;

editing means for manipulating the video to create editing events in the video and for generating said sequence of edit events.

8. The system of claim 7, wherein said video means includes digitizing means for digitizing an input signal to generate said video.

9. The system according to claim 1, wherein each of said format specifiers includes at least one model for specifying a video editing event in the corresponding format.

10. The system according to claim 1, wherein each of said format specifiers includes control information for the corresponding format.

11. The system according to claim 1, wherein each of said format specifiers includes at least one variable map for specifying a plurality of accepted values for a variable in the corresponding format.

12. The system of claim 1, wherein said input means includes:

receiving means for receiving a video edit decision list in a first format; and

parsing means for generating said edit events based upon said first video edit decision list and a format specifier corresponding to said first format.

13. The computer system of claim 1, wherein a format specifier includes a control section defining global variables and flags indicating semantic choices for the format, and a list of entries, wherein each entry corresponds to one edit event.

14. A computer system for converting a first video edit decision list in a first syntax for a first machine, video editing event, to a second video edit decision list in a second syntax for a second machine, the computer system comprising:

input means for receiving the first video edit decision list for a video program,

a format template library providing a plurality of format specifiers, each format specifier specifying a syntax of a video edit decision list for a different machine, including a first format specifier for the first syntax of a first machine and a second format specifier for the second syntax for the second machine,

first selecting means, connected to the input means and format template library, for selecting the first format specifier in the format template library,

first generating means for generating, according to the first video edit decision list and the first format specifier, a representation of the video program as sequence of edit events,

second selecting means, connected to the first selecting means and format template library, for selecting the second format specifier in the format template library,

second generating means for generating, according to the sequence of edit events and the second format specifier, a second video edit decision list in the second syntax, and

output means, connected to the second selecting means, for outputting the second video edit decision list for use by the second machine.

15. The system of claim 14 wherein said input means comprises means for receiving the first video edit decision list at an input port.

16. The system of claim 14 wherein said input means comprises means for scanning a document on which the video edit decision list is printed.

17. The system of claim 14 wherein said input means comprises a retrieving means for retrieving a stored video decision list.

18. The system of claim 17 wherein said video edit decision list is encoded on a paper tape.

19. The computer system of claim 14, wherein a format specifier includes a control section defining global variables and flags indicating semantic choices for the format, and a list of entries, wherein each entry corresponds to one edit event.

20. A computer system for generating a representation of a video program as sequence of edit events to be used by a digital video editor for editing the video program, the computer system comprising:

input means for receiving a video edit decision list in a first syntax for a first machine, wherein the video edit decision list comprises a formatted list of computer instructions for an edit controller for assembling the video program,

wherein each instruction defines source material and a destination of an edit event;

a format template library providing a plurality of format specifiers wherein each format specifier specifies a syntax of an edit decision list for a different machine, including a first format specifier for the first syntax,

selecting means, connected to the input means and the format template library, for selecting the first format specifier in the format template library, and

generating means for generating, according to the edit decision list and the first format specifier, the representation of the sequence of edit events corresponding to instructions in the video edit decision list.

21. The system of claim 20 wherein said input means comprises means for receiving the video edit decision list at an input port.

22. The system of claim 20 wherein said input means comprises means for scanning a document on which the video edit decision list is printed.

23. The system of claim 20 wherein said input means comprises means for retrieving a stored video edit decision list.

24. The system of claim 23 wherein said video edit decision list is encoded on a paper tape.

25. The system of claim 20, further comprising output means for making the sequence of edit events available to a digital video editor.

26. The system according to claim 20, wherein each of said format specifiers includes at least one model for specifying a video editing event in the corresponding format.

27. The system according to claim 20, wherein each of said format specifiers includes control information for the corresponding format.

28. The system according to claim 20, wherein each of said format specifiers includes at least one variable map for specifying a plurality of accepted values for a variable in the corresponding format.

29. The computer system of claim 20, wherein a format specifier includes a control section defining global variables and flags indicating semantic choices for the format, and a list of entries, wherein each entry corresponds to one edit event.

30. A computer implemented method for generating a video edit decision list, comprising a formatted list of computer instructions for an edit controller for assembling a video program, wherein each instruction defines source material and a destination of a video editing event, the method comprising the steps of:

receiving a representation of the video program as a sequence of edit events produced by a digital video editing system,

selecting one of a plurality a video edit decision list format specifiers wherein each format specifier specifies a syntax of a video edit decision list of a different machine;

generating, according to the sequence of edit events, a formatted list of computer instructions in a syntax specified by the selected video edit decision list format specifier, and

outputting the formatted list as the video edit decision list for use by the edit controller for assembling the video program.

31. The method of claim 30, wherein said receiving step includes the steps of:

accepting a video to be edited,

manipulating the video to create editing events in the video, and

generating a sequence of video and audio manipulations which each effect a particular one of the editing events.

32. The method of claim 31, wherein said accepting step includes digitizing an input signal to generate said video.

33. The computer-implemented method of claim 30, wherein a format specifier includes a control section defining global variables and flags indicating semantic choices for the format, and a list of entries, wherein each entry corresponds to one edit event.

34. A computer implemented method for converting a first video edit decision list in a first syntax for a first machine to a second video edit decision list in a second syntax for a second machine, wherein a video edit decision list comprises a formatted list of computer instructions for an edit controller for assembling a video program, wherein each instruction defines source material and a destination of a video editing event, the method comprising the steps of:

receiving the first video edit decision list for assembling a video program,

selecting a first format specifier from a plurality of format specifiers, wherein each format specifier specifies a syntax of a video edit decision list for a different machine;

generating, according to the first video edit decision list and the first format specifier, a representation of the video program as sequence of edit events,

selecting a second format specifier from the plurality of format specifiers;

generating, according to the sequence of edit events and the second format specifier, a formatted list of computer instructions, in the second syntax, and

outputting the formatted list as the second video edit decision list.

35. The computer-implemented method of claim 34, wherein a format specifier includes a control section defining global variables and flags indicating semantic choices for the format, and a list of entries, wherein each entry corresponds to one edit event.

36. A computer implemented method for generating a representation of a video program as a sequence of edit events to be used by a digital video editor for editing the video program, the method comprising the steps of:

receiving a video edit decision list in a first syntax for a first machine wherein the video edit decision list comprises a formatted list of computer instructions for an edit controller for assembling the video program,

wherein each instruction defines source material and a destination of an edit event;

selecting a format specifier from a plurality of format specifiers, wherein each format specifier specifies a syntax for a video edit decision list for a different machine;

generating, according to the video edit decision list and the selected format specifier corresponding to the first syntax, the sequence of edit events which corresponds to the video edit decision list.

37. The method of claim 36, further comprising the step of outputting the sequence of edit events to a digital video editor.

38. The computer-implemented method of claim 36, wherein a format specifier includes a control section defining global variables and flags indicating semantic choices for the format, and a list of entries, wherein each entry corresponds to one edit event.