Multimedia Playback Time Deviation Calculation for Editing Accuracy
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Solution Overview
Problem
Existing multimedia editing technologies face challenges in accurately determining multimedia editing information, particularly when setting playback multi-times speed, as the correspondence between playback times of edited multimedia data and the original data is not accurately maintained.
Innovation Solution
A method is provided to determine multimedia editing information by calculating a time deviation based on the first and second playback times and the playback multi-times speed, allowing for accurate correspondence between playback times of the original and edited multimedia data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If playback multi-times speed is set for multimedia data, then playback speed is improved, but the accuracy of correspondence between playback times of edited and original multimedia data deteriorates
Solution Approach 1:
The patent calculates a time deviation value in advance based on the first playback time, second playback time, and playback multi-times speed. This pre-calculated deviation is then used to adjust subsequent playback time correspondences, ensuring accuracy is maintained from the outset rather than requiring continuous correction during playback
Solution Approach 2:
The patent establishes a feedback mechanism where the time deviation is continuously applied when determining playback times for frames after the first target frame. Each subsequent playback time calculation incorporates the deviation information, creating a self-correcting system that maintains accurate correspondence throughout the edited multimedia data
2Productivity
If playback multi-times speed is set for multimedia data, then productivity is improved, but manufacturing precision of edited multimedia data deteriorates
Solution Approach 1:
The time deviation is pre-calculated using the formula involving first playback time, second playback time, and playback multi-times speed. This preliminary calculation enables rapid processing of entire multimedia sequences without requiring frame-by-frame manual adjustment, thus improving editing efficiency while maintaining precision
Solution Approach 2:
The patent transforms the editing process by changing from direct frame-by-frame time mapping to a parameter-based approach. By introducing the time deviation as a key parameter and using it to systematically adjust all playback time correspondences, the system achieves both high-speed processing and precise results
Data Source
AI summary
A method for determining multimedia editing information includes: obtaining a first playback time of a first target frame in first multimedia data to be edited, a second playback time of the first target frame for second multimedia data after editing and a playback multi-times speed set for the first multimedia data; determining, based on the first playback time and the second playback time, a time deviation that occurs while editing the first multimedia data at the playback multi-times speed for the first multimedia data; and determining, based on the time deviation, the first playback time, the second playback time and the playback multi-times speed, a playback time of the first multimedia data corresponding to each playback time of the second multimedia data after the second playback time.