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Event based audio-video sync detection

專利號
US11659217B1
公開日期
2023-05-23
申請人
Amazon Technologies, Inc.(US WA Seattle)
發(fā)明人
Hooman Mahyar; Avijit Vajpayee; Abhinav Jain; Arjun Cholkar; Vimal Bhat
IPC分類
H04N21/242; H04N21/234; H04N21/233
技術領域
audio,video,frames,bins,feature,bin,frame,sets,may,component
地域: WA WA Seattle

摘要

Techniques are described for detecting desynchronization between an audio component and a video component of a media presentation. Feature sets may be determined for portions of the audio component and portions of the video component, which may then be used to generate correlations between portions of the audio component and portions of the video component. Synchronization may then be assessed based on the correlations.

說明書

The audio and/or video component may be modified to improve synchronization (310). Synchronization may be improved in various ways. For example, either of the audio component or the video component may be modified such that higher correlating video frames and audio bins become corresponding relative to the shared timeline. In some implementations, audio bins and/or video frames may be stretched, compressed, or otherwise transformed to account for any modifications that are performed to improve synchronization. Alternatively, or in addition, new video frames and/or audio bins may be generated or existing video frames and/or audio bins may be removed. For example, as discussed further herein, audio bins may be analyzed to generate predicted video feature sets. The predicted video feature sets may be used to generate portions of a video frame. Similarly, video frames may be analyzed to generate predicted audio feature sets, which may be used to generate an audio bin. The generated video frame and/or audio bin may be inserted into the audio component or video component to improve synchronization. In some implementations, stretching and inserting video content or audio content may include duplicating video frames or audio bins.

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