How to Remove Filler Words and Fix Mistakes in Video Presentations Using Descript

A polished video presentation demands smooth delivery — no “um”s, no stumbles, no factual errors. But re-recording is time-consuming and often produces new mistakes. Descript‘s AI-powered filler word removal and Overdub voice cloning let you fix these issues post-production without re-recording. Here’s how.

Step 1: Record Your Presentation

Use Descript’s built-in screen recorder or import a pre-recorded presentation video. If recording within Descript, click “Screen Record,” select your screen and camera layout, and start presenting. Descript captures both your screen content and camera feed simultaneously, then auto-transcribes upon completion.

Step 2: Transcribe and Identify Issues

Review the auto-generated transcript. Mark three categories of issues: (1) filler words like “um,” “uh,” “basically”; (2) factual errors or misstatements; (3) awkward pauses or tangents. Color-code these by highlighting with different marker styles in Descript.

Step 3: Batch Remove Filler Words

Click “Remove Fillers” for automatic filler word detection and removal. Descript identifies all common filler words across your entire presentation. Review the highlighted instances — you can keep intentional pauses and only delete true fillers. Confirm removal and Descript eliminates all selected fillers, creating a smoother flow.

Step 4: Fix Misstatements with Overdub

For factual errors or misstatements, use Overdub. If you said “2024 revenue was $$5 million” but meant$$50 million, highlight “5 million” in the transcript, type “50 million,” and Descript replaces the audio using your cloned voice. The correction sounds natural because it’s synthesized from your own voice pattern.

Step 5: Set Up Voice Cloning (First-Time Only)

If you haven’t created your Overdub voice clone yet, Descript guides you through recording a 10-minute voice sample. Read the provided script clearly and naturally. After processing (about 30 minutes), your clone is ready. Subsequent Overdub corrections work instantly with no additional recording.

Step 6: Smooth Out Abrupt Transitions

After deletions and replacements, some audio transitions may sound abrupt. Use Descript’s “Smooth” transition feature at edit points — it applies a brief audio fade that makes cuts imperceptible. For video edits, Descript applies subtle visual transitions to maintain continuity.

Step 7: Final Review and Export

Play back the entire edited presentation. Listen for any remaining issues — unnatural Overdub segments, choppy transitions, or content gaps. Make final adjustments. Export as MP4 video with embedded captions derived from your edited transcript. Upload to YouTube, LinkedIn, or your company platform.

ProTips:

• Record Overdub voice samples in a quiet environment for highest clone quality
• For short presentations, remove fillers manually to maintain intentional rhetorical pauses
• Export captions as SRT files alongside your video for accessibility compliance