Video Recording Synchronization via Reverse Speed-Varying Processing
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Solution Overview
Problem
The issue of video special effects not matching video content when using speed-varying templates in video recording, leading to poor video quality, is addressed.
Innovation Solution
A method involving reverse speed-varying processing on speed-varied videos to obtain an original speed video, displaying this video for synchronized shooting, and then applying speed varying processing to ensure the recorded video matches the desired special effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If speed varying processing is applied to video templates to create dynamic special effects, then video creativity and visual appeal are improved, but the synchronization between special effects and video content deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-processing the speed-varied video to generate a time mapping relationship before the user records their video. This mapping is calculated in advance based on the speed variation curve, allowing the system to pre-determine how to adjust the template video's playback speed at different time points to achieve accurate synchronization with user-recorded content.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting the playback speed parameter of the template video based on a speed variation curve. The system modifies the playback speed at different time points according to pre-calculated mapping relationships, transforming the video playback from uniform speed to variable speed to achieve both creative effects and precise synchronization.
2Productivity
If the user imitates the time sequence of a speed-varied video template, then video creation efficiency is improved, but the special effect matching accuracy deteriorates due to speed changes
Solution Approach 1:
The patent applies copying by creating a time mapping relationship that copies the temporal structure from the speed-varied template video to the user's recording process. Instead of requiring the user to manually synchronize with changing speeds, the system copies the time sequence information and uses it to automatically adjust playback speed, maintaining both efficiency and accuracy.
Solution Approach 2:
The patent implements feedback by using the pre-calculated time mapping relationship to continuously adjust the playback speed of the template video. The system compares the actual playback position with the expected position based on the mapping, and automatically adjusts the speed to ensure special effects appear at the correct moments, creating a closed-loop synchronization system.
3Manufacturing precision
If uniform speed playback is used for video templates, then synchronization accuracy is improved, but video creativity and dynamic effects deteriorate
Solution Approach 1:
The patent applies dynamics by transitioning from static uniform speed playback to dynamic variable speed playback. The system uses a speed variation curve to make the playback speed change dynamically over time, allowing the video to have both creative dynamic effects and precise synchronization by adjusting speed based on pre-calculated time mapping relationships.
Data Source
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AI summary
A video recording method and device, an electronic device and a storage medium are provided. By acquiring (S101) speed varying information of a speed-varied video, where the speed varying information is used to represent a playing speed change of the speed-varied video; performing (S102) reverse speed-varying processing on the speed-varied video according to the speed varying information to obtain an original speed video; displaying (S103) the original speed video, and synchronously performing video shooting to generate an original speed target video; and performing (S104) speed varying processing on the original speed target video according to the speed varying information to obtain a target speed-varied video, since a playing speed of the original speed video obtained by reverse speed varying is the same as a normal speed of a video recorded by a user, by displaying the original speed video to the user to guide the user to record the video, a special effect in a template can be matched with video content shot by the user, so that the special effect in the original speed-varied video is directly available for the video recorded by the user, thereby solving the problem that the video special effect does not match the video content, and improving the special effect performance of the video recorded by the user.