Apple researchers launch LVSum, a benchmark for timestamp-aware long video summarization
Apple ML Research · rss · 2026-07-20
- Apple ML Research introduces LVSum, a benchmark for timestamp-aware long video summarization.
- The benchmark targets a core failure mode in multimodal LLMs: keeping summaries both semantically correct and temporally grounded across long videos.
- LVSum includes 72 videos across 13 domains, with an average length of 16 minutes.
- Each video is human-annotated with up to 10 summaries that include temporal references, enabling fine-grained evaluation of alignment over time.
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