How does video comparison work?

The tool samples frames at your chosen FPS from both videos and measures pixel differences. It also decodes audio and compares waveform differences over matching time windows.

Can I change the frame split rate?

Yes. Set sampling FPS between 1 and 30. Higher FPS gives finer detail but takes longer to process.

Is my video uploaded to a server?

No. Everything runs locally in your browser. Your files are never uploaded.

What outputs do I get?

You get average and max difference scores for video and audio, plus a list of timestamps with the biggest differences.

Video Compare - Compare Video A/B Frames and Audio Differences | VideosKit

Free online video compare tool. Upload Video A and Video B, set frame sampling FPS, and detect differences in images and audio. Private browser-side processing with no uploads.

How to Compare Two Videos

Find visual and audio differences between Video A and Video B in your browser.

Step 1

Upload Video A and Video B

Add two videos you want to compare.

Step 2

Set sampling FPS

Choose the frame sampling rate for comparison.

Step 3

Run comparison

Start analysis to compare frame and audio differences.

Step 4

Review difference timestamps

Inspect the top moments with the largest differences.

Use Cases

Before/After Edit Validation

Compare source and exported versions to quickly find where visuals or sound changed more than expected.

Encoder and Preset Testing

Use repeatable FPS sampling to compare outputs from different codecs, bitrates, or export presets.

QC for Localization and Dubbing

Spot timeline sections where audio differs significantly after dubbing or language replacements.

Frequently Asked Questions

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