Fix retention before you upload.
Get more views when you do.
Higher retention means YouTube pushes your video to more people. Virality Lab uses visual AI and audience modelling to find the exact moments that kill watch time, and tells you how to fix them before you hit publish.
Beyond the transcript
Three AI layers analyze every second
Most tools only read the transcript. Virality Lab sees what the viewer sees: visuals, audio, pacing, and spoken content analyzed together for the first time.
Visual AI Analysis
Watches every frame for scene changes, pacing, on-screen text, facial expressions, and visual monotony. Not just a transcript reader.
Transcript + Audio Intelligence
Maps spoken content for clarity, repetition, dead air, verbal stumbles, and promise-payoff timing across the full video.
Synthetic Audience Panel
AI viewer personas vote on every segment. Predicts where real audiences would click away before a single viewer sees it.
Visual intelligence
AI watches your video
like a viewer would
Every segment gets scored across six dimensions. The retention timeline shows exactly where attention holds and where it breaks, color-coded so you can scan the full video in seconds.
- Green zones: holding attention, earning runtime
- Yellow zones: light touch, small edit, big improvement
- Red zones: high drop-off risk with specific fixes
- Real retention curve overlay when connected to YouTube
Six-Dimension Retention Score
Does the first 5 seconds earn the next 30?
Are promises resolved before patience runs out?
How often does the video introduce something new?
Can a first-time viewer follow without rewinding?
Does the emotional register shift or flatline?
How frequently does the visual composition change?
From upload to actionable fixes in minutes
Four steps. No learning curve. Your video goes in, retention intelligence comes out.
Upload or import
Drop a video file, paste a YouTube URL, or select from your connected channel. Works with published and unpublished content.
AI analyzes every moment
Visual models scan each frame. Audio and transcript are mapped for pacing, clarity, and engagement signals. Audience personas predict drop-off points.
Get ranked fixes
Each risk zone gets a specific fix: cut a stumble, tighten dead air, reorder a payoff. Ranked by impact and confidence with exact timecodes.
Edit or brief your editor
Fix the moments directly in Satura's editor, or generate a detailed brief to send to your editor with every fix, timecode, and priority.
Cut Verbal Stumble
Remove the 1.7-second stutter: 'It's not, it's really, it's not that bad.'
Eliminate Dead Air
Remove the 1-second pause between 'online' and 'just start'.
Eliminate rhetorical setup
Cut the entire rhetorical question and jump-cut directly to the explanation.
Fixes that move the needle,
not just noise
Every fix tells you exactly what to change, where it is, and how much it matters. Impact and confidence scores help you prioritize. Edit the three things that will make the biggest difference, not fifty things that won't.
- Ranked by expected impact on retention
- Exact timecodes for every fix
- Specific instructions, not vague suggestions
- One-click editor brief for your team
One click to brief your editor
Don't edit yourself? Generate a complete editor brief with every fix, timecode, priority ranking, and description. Your editor gets exactly what they need to improve retention without back-and-forth or guessing.
#1 [0:14-0:18] Cut verbal stumble. Remove the 1.7s stutter "It's not, it's really, it's not that bad." Impact: 90%
#2 [0:23-0:29] Eliminate dead air. Remove 1s pause between "online" and "just start". Impact: 88%
#3 [0:03-0:07] Cut rhetorical setup. Jump-cut to explanation or first step of the payoff. Impact: 85%
Virality Lab vs. transcript-only tools
Most retention tools can only read words. Virality Lab sees what your viewers see.
Built for creators who care about retention
YouTube creators
Analyze any video before or after publishing. Catch the moments that cost you watch time and fix them before they hurt your performance.
Video editors
Get AI-backed evidence for every cut. Stop guessing which sections to trim and let retention data drive your editing decisions.
Content teams
Generate editor briefs automatically. The creator runs the analysis, the editor gets a detailed fix list with timecodes and priorities.
Data-driven creators
Connect your YouTube channel for real retention curve overlay. Calibrate AI predictions against actual viewer behavior.
Short-form creators
Every second matters in Shorts and Reels. Virality Lab catches the micro-moments like a half-second stumble or a missing hook that tank retention on short content.
Agencies & managers
Standardize retention review across clients. Run any video through the same rigorous analysis and share professional briefs.
Frequently asked questions
More tools for creators
Virality Lab works best alongside Satura's editor, AutoClip, and Trust Score for a complete content optimization pipeline.
AutoClip
Turn long videos into viral short-form clips with AI.
Trust Score
Get your channel's algorithmic health score.
Creative Library
Discover trending videos, outlier content, and niches.
AI Video Editor
Edit videos with AI-assisted speed and control.
Quick Subtitles
Add viral-style captions to any video in one click.
AI Image Generator
Create thumbnails and visuals from text prompts.
Stop losing viewers to fixable moments.
Upload a video. Get every retention risk identified and ranked. Fix the moments that matter most in minutes.
Analyze Your First Video