Swap your AI actor without re-recording
Change the actor in any existing UGC video in seconds. Test different demographics, styles, and audiences while keeping the original script, timing, and background intact.
One of the most consistently high-ROI experiments in paid social is testing your ad creative with different actor demographics. The same script, same background, and same hook can produce dramatically different ROAS depending on whether the actor resonates with your specific target audience. Historically, testing this meant re-hiring creators, re-filming entire videos, and waiting weeks for new content. Swap Actor compresses that entire process to seconds — select an existing video, pick a new actor from 1,000+ options, and generate the swap.
BasedUGC's Swap Actor tool preserves everything about your original creative — the script, audio track, background, timing, and pacing — while replacing only the actor's appearance and voice if desired. The new actor's lips are automatically re-synced to the original script timing, and facial expressions are mapped to match the original performance beats. Use Swap Actor to run demographic split-tests, localize actor appearance for different markets, or simply refresh fatigued creative without rebuilding it from scratch — all in the time it takes to pick a new face.
How it works
Pick any UGC video in your library — BasedUGC-generated or an uploaded file. The original script, audio, and background are all preserved through the swap process.
Browse 1,000+ AI actors and select the replacement. Filter by age, ethnicity, energy, or style to find the demographic you want to test against your original.
AI replaces the actor while preserving script timing and background. The new actor's lips are automatically re-synced to the original audio. Done in minutes.
What you get
Join thousands of performance marketers creating AI UGC that converts.
FAQ
Yes. Swap Actor automatically analyzes the phoneme timing of the original audio track and maps the new actor's lip movements to match precisely. The result is a natural-looking performance where the new actor appears to be delivering the script themselves, not dubbed over. Facial expressions and head movements are also adapted to match the general performance beats of the original — so an energetic, emphatic delivery translates appropriately to the new face rather than appearing stiff or mismatched. Audio processing adds less than 30 seconds to overall generation time.
Yes, with some caveats. Uploaded videos work best when there is a single clear actor in the frame with a relatively clean background. Videos with multiple people in frame, heavy motion blur, or fast-cut editing are harder to process accurately. For best results with uploaded footage, use clips where the actor's face is clearly visible for at least 70% of the video's duration and the camera is relatively stable. If you have footage that doesn't meet these conditions, our support team can review it and advise on the best approach before you commit a credit to the swap.
When an ad is performing well, the instinct is to leave it alone — but actor fatigue is a real phenomenon. As audiences see the same face repeatedly across your retargeting and prospecting campaigns, engagement and conversion rates drop even if the copy and offer remain compelling. Swapping the actor refreshes the creative visually without touching the elements that are working. You can also use Swap Actor to create demographic variants of your best-performing creative for different audience segments, testing which actor-audience alignment produces the highest ROAS without rebuilding the underlying ad from scratch.
Unlimited. Each actor swap uses one credit from your monthly plan, so the number of swaps you can run is determined by your available credits rather than any per-video limit. This means you can create 10, 20, or 50 actor variants of a single high-performing video and test them all simultaneously across different ad sets. On the Pro plan with unlimited credits, this is as many swaps as you want at any time. The original video remains in your library throughout, and each swap is saved as a separate named asset so you never overwrite or lose previous versions during testing.
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