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视觉上的剧烈变化未必等同于语义上的重要性，可能导致空镜头触发大量采样而静止画面的关键表情被忽略

1

Sources

50%

Confidence

Long-term

Relevance

8/7/2026

First Seen

Sources

帧选择即一切：如何让大模型真正看懂视频

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