Unverified50% confidenceTradeoffExact time
均匀采样按固定时间间隔抽帧，实现简单且计算开销可预测，但对视频内容一无所知，容易错失信息密度不均视频的关键瞬间
1
Sources
50%
Confidence
Long-term
Relevance
8/7/2026
First Seen
Sources
Related Claims
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