... score on contrast, text readability, face presence, pick the winner - A/B hook testing generate 5 hook openings from your transcript, compare engagement scores - Engagement analytics 7-signal scoring (hook, curiosity, energy, beat sync, face, emotion, virality) with trend tracking - YouTubechapters export, virality scoring,

... each frame - Calculates chi-squared distance between consecutive frames - Flags changes above threshold as scene cuts or dissolves - Shows before/after thumbnails for each detected scene change All processing happens in the browser using Canvas API. No backend needed. 3. YouTubeChapters Export We already had auto-