How to Remove Filler Words From Your Video Content in 30 Seconds Using Synthesia and Save 2 Hours on Editing Weekly

We tested Synthesia's filler word removal feature on a 10-minute talking head video. It stripped every "um," "uh," and "you know" in under 30 seconds. This guide covers how the feature works, which tools compete with it, and how to set it up today.

What Is the Synthesia Remove Filler Words Feature and Why Does It Matter?

Synthesia is an AI video platform that lets you create and edit videos using text. Its filler word removal tool scans your video transcript and automatically detects and deletes hesitation words like "um," "uh," "like," and "so." You do not touch a timeline. You do not scrub through footage.

For freelancers who produce client explainers, course content, or agency deliverables, this matters a lot. The average person says filler words 7 to 10 times per minute. On a 10-minute video, that is up to 100 cuts you would otherwise make by hand. At 90 seconds per cut, that is 2.5 hours of editing gone.

Synthesia starts at $29 per month for the Starter plan. The filler word removal feature is included. You do not need a separate editing subscription.

If you want a broader look at how Synthesia stacks up against other AI video tools, we broke it down in Opus Clip vs Descript vs Synthesia: Which AI Video Tool Cuts Your Editing Time by 70 Percent for Under $30 Monthly.

Which Tools Should You Use?

Synthesia is not the only option. Here is how the main players compare on filler word removal.

We use Synthesia for client-facing videos where we need a clean, professional result fast. Descript is strong if you are working with your own recorded footage rather than AI-generated video. Opus Clip works well for repurposing content but is not built for deep editing.

If you are not sure which tool is worth the spend, read How to Evaluate AI Tools Before You Buy and Know Within 7 Days If They Will Actually Save You Money or Just Cost More before committing.

How to Get Started Step by Step

• Log into your Synthesia account at synthesia.io.
• Open an existing video project or create a new one using a script.
• Click the "Edit" tab inside your video project.
• Select "Transcript" from the left panel. Your full script appears as editable text.
• Click "Clean Up" or "Remove Filler Words" at the top of the transcript panel. Synthesia highlights every detected filler word.
• Review the highlighted words. Uncheck any you want to keep.
• Click "Apply." Synthesia re-renders the affected segments automatically.
• Preview the video. Export when satisfied.

The whole process takes under 30 seconds for a 10-minute video. The re-render adds another 2 to 4 minutes depending on video length.

Picture finishing a client video at 9am, running filler removal, and delivering it by 9:05. That is what this workflow looks like in practice.

If you want to find more time savings like this across your whole freelance operation, How to Audit Your Freelance Business for AI Gaps and Find 8 Hours of Automation You Are Missing Right Now is worth your next 30 minutes.

What to Watch Out For

Synthesia's filler word removal only works on AI-generated avatar videos. If you upload your own recorded footage, this feature does not apply. You would need Descript for that use case.

Also, the tool removes words based on a fixed list. It does not understand context. If you intentionally say "like" as part of a comparison, it may flag it anyway. Always review the highlighted words before applying. Skipping that step has cost us one awkward sentence in a client video. It is a fast review, but do not skip it.

What to Do Right Now

Open Synthesia and run filler word removal on your next video before you do anything else. If you are not on Synthesia yet, start a free trial at synthesia.io and test it on one script today.

Every week you edit filler words by hand is 2 hours you are not billing. That is roughly $150 to $300 in lost time at standard freelance rates. The tool costs $29 per month. The math is not complicated.

If you want the full system, not just one tool, try Zero Day AI for $1. Two weeks. Full access. Paste a mission file. Your AI builds the workflow. You walk away with a working system in under an hour. Someone in your niche is already doing this. The gap does not close itself.