Diagnose why the first 6 seconds of your short-form video loses viewers — get a second-by-second evidence timeline, up to 3 named findings, 3 structurally different replacement hooks, and a timecoded edit table you can cut today.
Second-by-second retention forecast for your video's first 6 seconds — which seconds bleed, why, and 3 ranked hook fixes. Every prediction goes on an auditable ledger.
Predict second-by-second viewer retention for the first six seconds of a short-form video hook, then provide concrete opening fixes.
Analyze the first 6 seconds of any finished video or video script. Get second-by-second retention predictions, clear explanations of why viewers stay or leave, and actionable Hook improvements. AI-generated and calibrated with real retention data.
Send a topic and a length and get three different short-video scripts that each fit 15, 30, 45 or 60 seconds, timed line by line from the reading pace. Question-first (answer held to the last line) or hook-body-payoff. With on-screen text, stock search terms, title, caption, SRT and CSV.
A free single-file tool that tells you whether a short-form script fits your target length before you record it. Open the HTML in any browser - no install, no signup, no API key, no coding tool of any kind. Paste your script and get the estimated spoken length, a per-line breakdown marking your first cuts, a hook-length check, a warning for lines too long to read as captions, and a stopwatch that measures your own pace and recalibrates to it. Runs offline; your script is never uploaded.
Keep a permanent, hash-chained ledger of public forecasts and see who has actually earned weight. Add calls before they resolve, add outcomes later, and get hit rate with confidence intervals, calibration, and naive versus track-record-weighted consensus on open questions. Edited or removed entries are detected. Offline deterministic script; calls recorded after the answer was known earn no weight.
Send your short video and get its first six seconds read frame by frame: what is on screen and heard each second, where the picture freezes or the sound drops, a risk level per second with the reason, and three replacement openings to film. One report image plus the findings, for TikTok, Reels and YouTube Shorts.
Upload a video and HookScan measures its first 8 seconds: when the first word is spoken, when the picture first changes, cuts, movement, on-screen text, faces, loudness and silences. Each check is PASS or FIX with the change in seconds. You also get two re-cut videos: trimmed_open.mp4 with the silent start and long pauses removed, and cold_open.mp4 that opens on your strongest line. No retention guesses, only measured numbers. A 10-minute 1080p file took about 3 minutes in our test.