YouTube Shorts· Powered by Meta's TRIBE v2 fMRI AI
Your Shorts hook decides whether YouTube's algorithm distributes your video. See exactly what's happening in your viewer's brain — second by second.
No credit card required · First analysis free
Upload your video
Drop in your video file. MP4 or MOV, up to 30 seconds.
AI encodes neural responses
A vision language model prompted as a senior paid-social strategist watches the whole cut and writes up what happens in each segment.
Get your results
Hook, Bridge and Offer scored 0–100 separately, a timestamped critique of each segment, concrete fixes, and rewritten hook lines.
Hook score
0–100 for your opening, validated against 218 videos with real retention labels
Segment critique
What is wrong at 0–2s, 2–5s and 5s onward, in writing, with timestamps
Hook rewrites
One to five alternative opening lines you can shoot tomorrow
Drop-off diagnosis
The moment the ad loses the viewer — and the reason why
YouTube Shorts uses completion rate as a primary distribution signal — the algorithm rewards videos where viewers watch to the end. The hook (first 3 seconds) is the single highest-leverage optimization point, since completion rate depends heavily on whether viewers get past the opening at all. VidCognition analyzes vertical Shorts optimally — the 9:16 aspect ratio, fast-cut pacing, and text overlay patterns common in Shorts are all accounted for in the critique.
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Upload your first YouTube Shorts video and get neural engagement data in minutes. Your first analysis is free.