Observed arrival · 2026-10-26
SyncProof checks and fixes audio-video sync on Windows
A Windows tool that compares a speaker’s lip movement with speech, reports audio delay and drift, and can retime the audio.
- For
- Windows video editors and camera-facing creators
- Worth noticing
- The page reports a ±25 ms uncertainty in its absolute zero point, despite much smaller errors when following deliberate shifts.
Field notes
The checker is described as locating the active speaker, separating analysis at cuts, and declining to guess when faces are not visible or are in profile. For correction, the page says separate sections can receive separate timing adjustments, with joins placed at a cut or speech pause; it also says the original file is left unchanged. The published accuracy tests use eight clips and seven shift values per clip, and the page distinguishes shift-following error from uncertainty in the absolute zero point.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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