How to remove dead air from a podcast video recording

The podcast editing problem

A typical raw podcast recording has 20–40% dead time. That is all the thinking pauses, the "um"s, the moments when someone reaches for their water, the awkward silences after a question before the guest starts speaking. Removing these manually means scrubbing frame by frame through the entire recording looking for each gap, marking it, and cutting it.

For a 90-minute episode, that's several hours of editing time spent on mechanical tasks rather than narrative decisions. The Remove Silence tool does the mechanical part in one pass.

Step-by-step

1. Open your raw recording with ⌘O or drag it onto the app window.
2. Open the smart tools panel and choose Remove Silence.
3. Set threshold to approximately −40 dB for a typical podcast with a close-mic'd guest in a quiet room. This catches genuine silence without cutting breath sounds.
4. Set minimum silence duration to 1 second. Gaps shorter than this are normal speech rhythm - cutting them will make the output feel rushed.
5. Set padding to 0.1 seconds on each side of kept segments. This prevents cutting off the last syllable before a pause or the first word after one.
6. Run Remove Silence. The timeline updates with a new selection marking everything that will be kept.
7. Review and adjust. Play through the timeline, especially around cut boundaries. Drag segment edges to restore any clipped word. Add back intentional pauses where the rhythm calls for it.
8. Export with ⌘E.

Recommended settings for different podcast setups

These are starting points. Run the scan, listen to the first few cuts, and re-run with adjusted settings if needed. Re-running is instant and non-destructive.

What the padding setting does

When Remove Silence finds a gap to cut, it marks the boundaries of the silence precisely. Without padding, the kept segments start and end exactly at those boundaries - which can feel abrupt. The first syllable of the next sentence begins with no lead-in, and the last word before a pause is cut right at the vowel.

Padding extends each kept segment by the specified amount on both sides. Even 50–100 ms of padding makes a significant difference to how natural the cuts feel to a listener. Always use at least 50 ms; 100–150 ms is comfortable for most conversational content.

After silence removal - refine with speech search

Remove Silence handles the structural gaps. For individual segments that are still weak - a tangent you want to remove, a question that landed badly, a repeated story - use Speech Search to find the exact line by typing a few words from it. Navigate directly to that moment and remove it manually from the timeline.

The combination of automatic silence removal plus targeted speech search typically reduces a 2-hour raw recording edit down to 20–30 minutes.

Exporting for video podcasts

For upload to YouTube or a video podcast platform, export as a merged MP4 - a single file containing all your kept segments joined together. The video track is copied losslessly between segments and the audio transitions are handled cleanly at each cut boundary.

If you want separate segment files for further editing in a video editor, use the split export option instead - one file per segment.