Ensure safety & accessibility

Video Flash Analysis

Scan video flashes to meet accessibility standards and protect viewers with PSE and other sensitivities.

Note: Processing runs locally in your browser. Video never leaves your device.

How it works

Upload your video

Select or drag & drop a video into the upload box. Available formats: MP4, MOV, WEBM, AVI, MKV, FLV, WMV, M4V, TS, MPG, MPEG, 3GP, OGV

Start the analysis

Review the video metadata and configure your analysis settings::
  • Standard Selection: Choose between WCAG 2.2 (Criterion 2.3.1), Ofcom 2017, and Trace24 definitions.
  • Engine Tuning: Enable sensitivity adjustments, Reduce Motion Noise, or a WCAG 66ms qualifying window.

Processing video

Analysis runs in your browser, so please keep this tab open. Processing time is based on your computer’s speed and mode selected.

Interpreting results

Interactive Timeline maps luminance & red-ratio fluctuations. Scrub the timeline to sync with Frame Previews showing exact highlighted Flash Zone Overlays (color-coded spatial clusters) where safety violations occur. A detailed Violations Log pinpoints precise timecodes, failing standards, and hazard sizes.

FAQ

Answers to common questions about photosensitive epilepsy, WCAG 2.3.1 compliance, and using Video Audit.

Video creators, developers, and accessibility specialists should use this tool to test animations and videos for photosensitive epilepsy triggers. This includes video creators, editors, web and game developers, and accessibility specialists. For example, web developers can use it to test animated banners or game scenes, and video producers can check their film or ads for safety. WCAG explicitly notes that all content on a webpage must meet seizure-safety criteria w3.org. Our video analysis tool serves the same audience: if your website or video might have flashing content, it’s wise to check it.

Product roadmap

Features roadmap
FeatureDescriptionDelivery
BlogLaunch a blog featuring guides and best practices focused on video accessibility.Q2 2026
Regulatory Standards ComplianceFull client-side integration and validation of Trace24, NHK, and Ofcom 2017 regulatory compliance engines.Q2 2026
Enterprise APIProvide a headless API wrapper for enterprise CI/CD deployment pipelines.Q3 2026
AI Context FilteringIntegrate AI models to classify strobe sources and drastically reduce false positives.Late 2026