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.