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Dev.to
Dev.to
7/21/2026
A 2,181-video field report made my open-source video tool better in one day

A 2,181-video field report made my open-source video tool better in one day

Short summary

A user ran the open-source claude-real-video tool over 2,181 videos and reported a critical bug: percentage-based frame deduplication silently drops frames where small subjects move, causing vision models to miss key events entirely. Version 0.7.16 adds a cell-level change check that preserves frames with small but significant motion, fixing the issue without increasing kept-frame count on normal footage. Several other bugs (non-UTF-8 crash, mislabeled flag, 68GB intermediate pileup) shipped the same day.

  • Percentage-based frame dedup is structurally blind to small subjects in frame — a person at phone distance covers ~0.5% of pixels
  • v0.7.16 adds a cell-level change check: if a few cells change hard, the frame stays regardless of percentage
  • User field reports from 2,181 video runs are a roadmap, not criticism — treasure power users who report bugs

Generated with AI, which can make mistakes.

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