Video A/B Testing API

Submit two video variants. Get comparative emotional intensity scores segmented by demo and geography. Authentic reactions, not surveys.


What It Does

Comparative Emotional Intelligence

Brands submit two video variants via API. Reactr distributes both to a matched audience panel. Each viewer's genuine emotional reaction is captured via front-facing camera in real-time.

The system returns frame-by-frame emotional intensity scores, comparative peak analysis, and demographic/geographic breakdowns. No surveys. No self-reported data. Just authentic, measurable emotional response.

Know which version wins before you spend a single dollar on media. Reactr transforms subjective creative decisions into data-driven ones.


Use Cases

Built for High-Stakes Decisions

🎬

Trailer Testing

Studios test two trailer cuts before $100M+ marketing spend. Know which cut triggers stronger emotional peaks across every key demographic.

📺

Ad Creative Optimization

Brands compare video ad variants for emotional resonance before campaign launch. Stop guessing which creative will perform and start knowing.

📦

Packaging & Reveal Testing

CPG brands test product reveal videos across demographics. Understand which unboxing moment creates the strongest emotional connection.

🗳️

Political Campaign Messaging

Test two versions of campaign ads across geographic segments. Identify which message resonates in swing districts before media buys.


How It Works

Four Steps to Clarity

1

Upload Two Variants

Submit your two video variants via the Reactr API.

2

Distribute to Audience

Reactr distributes both to a matched audience panel.

3

Capture Real Reactions

Front cameras capture genuine emotional reactions in real-time.

4

Receive Analysis

Get comparative emotional analysis with demographic breakdowns.


The Advantage

Why Emotional Response Beats Click & View Metrics for A/B Testing

Traditional video A/B testing relies on proxy metrics: click-through rates, view duration, completion rates. These tell you what people did, but not how they felt. A viewer who watches a full trailer out of confusion registers identically to one who watches out of excitement.

Emotional A/B testing changes the equation. Reactr measures the authentic involuntary response: the gasp, the smile, the lean-forward moment. It predicts downstream behavior far more reliably than any click metric. When you know which variant triggers a stronger emotional peak at the key moment, you know which variant will drive word-of-mouth, ticket sales, and engagement.

Click metrics are lagging indicators. Emotional response is the leading signal. Reactr's video A/B testing API gives you the leading signal before you commit your media budget.


FAQ

Frequently Asked Questions

How is emotional A/B testing different from traditional video testing?

Traditional video testing relies on surveys (what people say they feel) or engagement metrics (what people click). Emotional A/B testing with Reactr captures involuntary facial and audio reactions at the moment of first exposure. Authentic emotional response that cannot be faked or filtered through social desirability bias. The result is a direct comparison of how two variants actually make people feel, not what they report afterward.

What metrics does the A/B Testing API return?

The API returns frame-by-frame emotional intensity scores across 7 sentiment categories (Joy, Surprise, Disgust, Fear, Sadness, Contempt, Neutral) for each variant. You also receive comparative peak analysis, demographic breakdowns, geographic segmentation, and an overall emotional intensity score with a confidence interval for each variant.

How many reactions do I need for statistically valid A/B test results?

For most use cases, 200-500 reactions per variant provide statistically significant results at a 95% confidence level. For geographic or demographic sub-segmentation, larger panels (500-1000+) are recommended. The API returns confidence intervals with every response so you can assess significance in real-time as reactions come in.

Can I A/B test trailers before theatrical release?

Yes. Reactr is designed for pre-release testing. Content is distributed to a controlled audience panel under NDA-equivalent terms. Participants see the content through the Reactr platform, and no content is downloadable or shareable. Studios routinely use Reactr to test trailer cuts, TV spots, and marketing materials before committing to media spend.


Ready to get started?

Stop guessing which content resonates. Start measuring real emotional response.

View Pricing Contact Us