Video-Audio Synchronization via Tempo Point Extraction
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Solution Overview
Problem
Current video processing methods fail to effectively synchronize video and audio data, resulting in low correlation between the two, which limits their cooperative playback and integration of effects such as tempo-based adjustments and superimpositions.
Innovation Solution
A method and apparatus that process circuitry to obtain tempo information from audio data, determine target tempo points, and adjust video frames accordingly to synchronize video effects with audio tempo, enabling improved correlation and integration of video and audio during playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If video and music are processed independently, then processing simplicity is maintained, but video-music correlation and cooperative playback are poor
Solution Approach 1:
The patent merges video processing and music processing into a unified system where music tempo information serves as the basis for video effect timing. The music processing module extracts tempo points, and the video processing module uses these tempo points to trigger video effects, creating a combined video-music processing framework that ensures synchronization and correlation between the two media types.
2Reliability
If video effects are synchronized with music tempo, then video-music integration is improved, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by first processing the music to extract tempo information and tempo points before processing the video. The music processing module pre-extracts tempo characteristics and stores them as timing references. Then, during video processing, these pre-extracted tempo points are directly used to trigger video effects at appropriate moments, avoiding the need for complex real-time synchronization calculations.
Solution Approach 2:
The patent uses music tempo points as an intermediary element that mediates between music processing and video processing. The tempo points serve as a common language or reference framework that both modules can understand and use for synchronization, simplifying the integration process by providing a clear timing reference rather than requiring direct complex interaction between video and music processing systems.
3Reliability
If tempo-based video effects are implemented, then video-music cooperativity is enhanced, but computational requirements increase
Solution Approach 1:
The patent extracts only the essential tempo information from the music signal, specifically identifying tempo points at beat changes rather than processing the entire music waveform continuously. This extraction approach focuses computational resources on the critical timing information needed for synchronization, discarding unnecessary detailed audio processing while maintaining effective video-music cooperativity through the extracted tempo points.
Data Source
AI summary
Aspects of the disclosure provide methods and apparatuses for generating video data. In some examples, an apparatus for generating the video data includes processing circuitry. The processing circuitry obtains tempo information from audio data that is inserted in a target video. The processing circuitry determines a plurality of target tempo points in the tempo information according to video effect time description information included in a video effect description file. The video effect description file includes video effect data that is used to adjust one or more video frames of an original video. The processing circuitry obtains the one or more video frames from the original video according to the plurality of target tempo points. The processing circuitry adjusts the one or more video frames with the video effect data. The processing circuitry generates the target video including the adjusted one or more video frames and the audio data.