How to Add a Voiceover to a Loom Video (Free + AI)

Loom is brilliant for capturing a screen recording in one take, but the audio is rarely as polished as the visuals. If you want to add a voiceover to a Loom video — or replace the original audio entirely — you don’t have to re-record anything. Whether your delivery rambled, you stumbled over words, your accent muffled a key point, or you simply need a clean, professional Loom voiceover in another language, there are several ways to fix the narration after the fact. This guide walks through every option in 2026, from quick AI voiceover to manual re-recording, and shows you which one actually saves time.

The core problem is that Loom records your live microphone in real time. That means every “um,” every pause to think, and every off-the-cuff tangent gets baked into the file. The good news: modern AI tools can generate a brand-new, perfectly timed voice track from your footage, so you keep the screen recording and swap the audio for something far more listenable.

Why Replace the Audio on a Loom Video?

People reach for a fresh voiceover on a Loom recording for a handful of recurring reasons:

• Rambling delivery. Live narration drifts — long pauses, repeated points, and filler words make a short demo feel twice as long.
• Clarity and accent. A clear, consistent voice helps a global audience follow along, especially for technical walkthroughs.
• Multilingual reach. One recording, many markets — you may need the same demo in English, Spanish, German, and Japanese.
• Professional polish. A clean script and a natural voice make a product demo, onboarding video, or sales walkthrough feel finished rather than improvised.
• Background noise. Dogs, keyboards, and air conditioning all sneak into a live take and are hard to remove cleanly.

The Easiest Way: AI Voiceover Synced to Your Screen with ScreenStory

The fastest route — and the one we recommend — is to let ScreenStory generate a voiceover directly from your footage. It analyzes what happens on screen, writes a clean narration script, and produces a natural AI voice that is timed to your on-screen actions. You edit the words as text and re-generate the voice instantly, so there is never a microphone or a retake involved.

1. Paste your public Loom share link. In ScreenStory, choose “Import from Loom” and paste the share URL. ScreenStory downloads and processes the recording for you. Note that only public Loom links work, so set the video’s sharing to public first.
2. Let the AI write a clean script. ScreenStory watches the footage and rewrites a tidy narration script based on what’s actually happening — no rambling, no filler words.
3. Pick a voice and language. Choose from multiple natural voices and 15+ narration languages. Want the demo in Spanish or German? Select it here.
4. Edit any line as text. Read through the script and tweak wording, fix a product name, or shorten a sentence. Re-generate the voice for that line in seconds — you never re-record.
5. Export a polished MP4. ScreenStory renders the final video with the new voiceover, word-level karaoke captions, and an optional realistic lip-synced talking avatar. Download the MP4 and share it anywhere.

Because the voiceover is generated against the timeline of your screen recording, the narration lands on the right moment — the voice describes a button just as your cursor reaches it. ScreenStory runs entirely in the browser with no install, on self-hosted H100 GPUs that keep costs low, with plans from $9.99/mo and a free trial. For a deeper look at trimming and refining the result, see our guide on how to edit a Loom video.

Option: Record a New Voiceover Yourself

If you’d rather use your own voice, you can re-voice the recording manually. First, download the Loom video as an MP4. Then drop it into a video editor (DaVinci Resolve, Premiere, CapCut, or similar), mute or detach the original audio track, and record a fresh narration over the footage.

This gives you full control, but the friction is real. You have to write a script, record it cleanly, and — the hard part — match your pacing to the on-screen action. Miss the timing and you’ll be doing retakes or nudging clips around the timeline. For a single short clip it’s manageable; for anything longer or for multiple language versions, it gets tedious fast.

Option: Generic Text-to-Speech Tools

A middle path is to write a script and feed it into a standalone text-to-speech (TTS) tool to generate an audio file, then import that audio into a video editor and lay it over your downloaded Loom. The voices have improved a lot, so the audio itself can sound natural.

The catch is alignment. A generic TTS tool knows nothing about your footage, so the audio is not synced to the screen. You’ll still need to chop the generated audio into chunks and manually line each one up with the matching moment in the video — essentially the same timing work as recording yourself, minus the microphone. It works, but it’s the most manual of the AI-assisted options.

Voiceover Methods Compared

Tips for a Great Voiceover

• Keep the script concise. Cut tangents and say one thing per sentence. A tight script is easier to follow and easier to translate. If your original take was full of “ums,” our guide on removing filler words from a Loom video helps.
• Match pacing to the action. The voice should describe what’s on screen as it happens — not race ahead or lag behind. Tools that auto-sync handle this for you.
• Add captions. Many viewers watch muted, so on-screen text dramatically lifts engagement. See how to add captions to a Loom video.
• Aim for a finished feel. A clean voice, consistent pacing, and captions together are what make a Loom video look professional.

Frequently Asked Questions

Can I add a voiceover to a Loom video without re-recording?

Yes. With ScreenStory you import the public Loom link, and the AI writes a script from the footage and generates a natural voiceover synced to the screen. You edit the narration as text and re-generate the voice — there’s no microphone and no retakes involved.

Can I replace the original Loom audio with an AI voice?

Absolutely. The original live audio is set aside and a fresh AI voice track takes its place, timed to your on-screen actions. You keep the screen recording exactly as it was and swap only the narration.

Can I add a voiceover in another language?

Yes. ScreenStory supports 15+ narration languages and multiple voices, so you can produce the same demo in several languages from one recording without re-shooting anything.

Is there a free way to add a voiceover to a Loom?

You can download the Loom and re-voice it in a free editor like DaVinci Resolve or CapCut, which costs nothing but takes manual effort to time correctly. For an automatic, synced AI voiceover, ScreenStory offers a free trial, with paid plans starting at $9.99/mo.

What if I want a talking-head presenter too?

ScreenStory can add an optional realistic, lip-synced talking avatar that speaks your new script — useful when you want a human face on screen without filming yourself. If you’re still weighing tools, compare options in our best Loom alternatives roundup.