Audio out of sync? Compare the start, middle and end

For a harmless diagnostic sample, use a visible action that produces a short sound you can identify, or a clearly spoken syllable with visible lips. Repeat it near the beginning and later in the take. Avoid relying on an animation whose sound is intentionally delayed.

When examining an existing lesson, choose comparable visible/audio events at the start, middle and end. Keep their timestamps. A vague sense that the recording “feels late” is less useful than three explicit observations.

Open the original in another supported player if practical. Compare it with the uploaded or exported rendition. Wireless listening or an overloaded playback system can complicate perception, so use a consistent playback arrangement while checking.

If the original is aligned but an edited copy is not, investigate that export or track edit first. If the same mismatch is present in the original across players, the capture path becomes a more useful subject for support.

In an illustrative example, the sound arrives 0.16 seconds after the picture at all three checkpoints. That suggests a roughly constant offset worth investigating. In another example it is late by 0.10, 0.30 and 0.50 seconds as the take progresses; a single track shift cannot align every checkpoint.

These are fictional measurements showing the method, not results from a Reel test. Record the direction as well as the magnitude: audio early and audio late require opposite corrections. Keep the observation separate from an assumed technical cause.

An editor that exposes separate audio and video may allow a fixed offset correction on a copy. Use its current documentation, then inspect all checkpoints after export. This guide does not claim Reel contains a timeline editor or automatic drift repair.

OBS lists a Render Delay filter for delaying a visual source in its own live composition. That is not a generic remedy for every finished recording, nor does a fixed delay resolve progressive drift. Choose a tool whose correction matches the diagnosed problem.

If the fault began after changing a microphone, wireless route, capture configuration or editor, make a short controlled sample with that change isolated. Do not change several devices and settings at once. Preserve the problematic original for support.

For a critical long lesson, include a late checkpoint in the rehearsal rather than testing only the first five seconds. If reliable alignment cannot be established, consider shorter takes or a separate narration workflow with explicit timing markers. Do not promise recovery of an unusable original.