Compare Two Videos, or Check One
Two versions of a clip? See exactly where they differ. Just one? Find out what is wrong with it, in plain words.
Two files
Compare two videos
Upload the original and the new export. DiffALL lines them up, scores how similar they are second by second, and plays both side by side with a heatmap that marks every change.
- A similarity score for the whole clip, and the worst moment
- A live side-by-side player with a synced heatmap
- Starts lined up automatically when one begins a little later
- 4K and phone footage handled, compared at 720p above 1080p
One file
Check one video's quality
No original needed. DiffALL reads the file, names its weakest point, and shows the measurement behind every finding.
- Bitrate against the recommended upload rate
- Focus, noise, blocking and exposure
- A frame rate that is not real, and repeated frames
- Camera shake and uneven motion
- Frozen moments, found without watching
Subtitles too
Comparing two subtitle files for the same video? See every wording change and how far the timing drifted.
Compare subtitles →Free, no sign-up. Your files are deleted as soon as the job finishes.