MEC constructs one query-conditioned, nested ranking of video frames whose prefixes work for any frame budget, improving accuracy over uniform sampling by 3.77 points and cutting selection latency by about half.
Event-anchored frame selection for effective long-video understanding, 2026
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One Ranking, Any Budget: Matryoshka Evidence-to-Context Frame Selection for Long-Video Understanding
MEC constructs one query-conditioned, nested ranking of video frames whose prefixes work for any frame budget, improving accuracy over uniform sampling by 3.77 points and cutting selection latency by about half.