Dual compression format digital video production system
First Claim
1. A digital audio/video production system adapted for use with an on-line video editing facility, the production system comprising:
- a digital video recorder capable of simultaneously recording information representative of the same program source material, including correlated edit-time-code information, onto first and second removable storage media in first and second formats, respectively, the information in the first format being data-compressed relative to the information in the second format;
a programmed personal computer configured to receive the first removable storage medium, enabling an operator to edit the information representative of the program source material in the first format in off-line fashion so as to develop an edit decision list; and
means to transfer the edit decision list to an on-line video editing facility, the on-line editing facility being further configured to receive the second removable storage medium, whereby an operator of the on-line facility may edit the program source material in the second format using the edit decision list to create a final video production.
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0 Petitions
Accused Products
Abstract
An audio/video production system is implemented on a PC-based platform, preferably utilizing various forms of removable magnetic, optical, or magneto-optical storage media. Specially modified cameras or other sources provide digitally data-compressed audio and video program materials in two formats, a first format having a higher data-compression ratio and intended for use in off-line systems to develop edit decision lists, and a second format having a lower data-compression ratio and intended for use in on-line editing and to produce the final representations of the programs. Off-line editing decisions may thus be developed on a PC using removable storage media, and final representations of the programs may be produced on-line in accordance with stationary-head or rotary-head digital-tape-based formats, such as DAT, 6-mm or 8-mm tapes. In an alternative embodiment, automatic and unattended editing, or extended program playback of more than 40 hours duration of digital video, is available.
140 Citations
39 Claims
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1. A digital audio/video production system adapted for use with an on-line video editing facility, the production system comprising:
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a digital video recorder capable of simultaneously recording information representative of the same program source material, including correlated edit-time-code information, onto first and second removable storage media in first and second formats, respectively, the information in the first format being data-compressed relative to the information in the second format; a programmed personal computer configured to receive the first removable storage medium, enabling an operator to edit the information representative of the program source material in the first format in off-line fashion so as to develop an edit decision list; and means to transfer the edit decision list to an on-line video editing facility, the on-line editing facility being further configured to receive the second removable storage medium, whereby an operator of the on-line facility may edit the program source material in the second format using the edit decision list to create a final video production. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. The method of producing a final video program, comprising the steps of:
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providing video program source material in first and second digital formats, the material in the first format being compressed relative to the material in the second format; recording the material in the first and second formats, respectively, onto first and second removable storage media along with correlated edit-time-code information; interfacing the first storage medium to an off-line video editing system to develop edit decision information; transferring the edit decision list to an on-line video editing system; accessing the program material in the second storage medium using the on-line video editing system; and editing the material in the second format on the second storage medium in accordance with the edit decision list to produce a final video program. - View Dependent Claims (11)
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12. A digital video production system adapted to deliver program material and an accompanying edit decision list to an on-line video editing facility for the purpose of creating a final program, the system comprising:
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digital video recording apparatus, including; an input to receive a video program, means to digitally compress the program in accordance with more than one compression ratio, an interface to a first removable storage medium, an interface to a second removable storage medium, and means no simultaneously record the video program onto the first removable storage medium at a first compression ratio and onto the second removable storage medium at a second compression ratio, the first compression ratio being greater than the second; and an off-line digital video editing system, including; an interface co receive the first removable storage medium. a display to review portions of the video program, enabling a user to make edit decisions concerning the program, and an interface to a third removable storage medium to store a list of the edit decisions, whereby an on-line video editing facility, upon receiving the second and third storage medium, may be used to produce a final, edited version of the program in accordance with the decision list. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A digital video recording apparatus adapted or use with an on-line video editing facility and a personal computer configured to perform off-line editing, including edit-list development, the apparatus comprising:
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a camera outputting information representative of a video program; means to digitally compress the program information at a plurality of compression ratios; a removable disk drive to store a highly compressed version of the program information suitable for off-line editing using the personal computer; and a removable tape drive to store a less compressed version of the program information suitable for on-line editing; both versions of the program being stored with correlated edit-time-code information, thereby enabling the on-line editing to use the edit list developed during off-line editing. - View Dependent Claims (23)
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24. A digital audio/video production system, comprising:
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(a) digital video recording apparatus, including; an input to receive a video program, first and second removable digital storage media, and means to simultaneously record the program, including correlated edit-time-code information, onto the first and second removable storage media in first and second formats, respectively, the first format being data-compressed relative to the information in the second format; (b) a first video editing system, including; means to receive the first removable storage medium, and controls enabling an operator to edit the program in the first format and develop a set of edit decision directives; and (c) a second video editing system, including; means to receive the second removable storage medium, means to receive the edit decision directives, and means to edit the program information in the second format in accordance with the edit decision directives to create a final video production. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A video production method, comprising the steps of:
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simultaneously recording information representative of a video program, plus correlated edit-time-code information, onto first and second removable digital storage media in first and second formats, respectively, the pro,ram information in the first format being data-compressed relative to the program information in the second format; receiving the first removable storage medium at a first video editing facility and editing the program information at the first facility in the first format to develop a see of edit decision directives based upon the edit-mime-code information; and receiving the second removable storage medium and edit decision directives at a second video editing facility and editing the program information at the second facility in the second format in accordance with the edit decision directives so as to create a final video production. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification