Muscle Filter AI Video Effect
Pop: suddenly huge cartoon muscles. Flex and laugh. Upload one photo and WakeStill turns it into a 12-second vertical video with sound.
One video costs 10 credits ($9.90 on its own) and takes about 3–6 minutes.

What happens in the Muscle Filter video
You stand in a bright gym; with a comic pop your arms and shoulders suddenly grow huge and cartoonishly muscular like bodybuilders, your plain t-shirts stretched tight. You flex, look at your arms in disbelief and burst out laughing. Clearly a playful, exaggerated filter effect.
Muscle Filter at a glance
| Detail | Value |
|---|---|
| Who can be in it | One adult, or two adults (one photo each or one photo of both). |
| Photo options | One person, one photo · Two people, one photo each · Two people in one photo |
| Length | 12 seconds |
| Format | 720×1280 vertical MP4 (9:16) |
| Sound | A comedic boing sound and an upbeat workout beat; no speech, no singing |
| Price | 10 credits = one video ($9.90 on its own) |
| Render time | About 3–6 minutes |
| Video model | Seedance 2.0 Fast (ByteDance) via KIE.ai |
| Category | Transformation |
How to make a Muscle Filter video
- Upload your photo (add a second person if you like).
- Confirm that you have the right to use the photo.
- Press Create. The video uses 10 credits and is ready in about 3–6 minutes.
- Download the MP4 or share it from your library.
Best photos for Muscle Filter
- Use a clear, front-facing photo with good light and the whole face visible.
- Add a second photo if you want a friend in the video too.
- Adults only (18+). Use your own photos or get permission from everyone in them. No celebrities.
- Plain clothes work best: the prompt tells the model to leave out logos and text, so unbranded clothes give the cleanest result.
The exact Muscle Filter prompt
Every Muscle Filter video is made with one of these fixed prompts, picked by the photos you upload. Visitors cannot change them; your photos are the only input. With one photo of both people, the two-photo prompt is used with its subject lines rewritten: the person on the left is the first person and the person on the right is the second.
Vertical 9:16 cinematic video, no dialogue. The person from the reference image is the only subject. They stand in a bright gym; with a comic pop their arms and shoulders suddenly grow huge and cartoonishly muscular like bodybuilders, their plain t-shirts stretched tight. They flex, look at their arms in disbelief and burst out laughing. Clearly a playful, exaggerated filter effect. Nothing sexual, no weapons, no blood, no gore. Audio: a comedic boing sound and an upbeat workout beat, no speech and no singing. All clothing is plain and unbranded: no logos, no brand marks, no lettering, no symbols and no text anywhere in the frame. Only this one person is the subject; no children. The person is an adult. Keep the face and hairstyle identical to the reference image, and keep the outfit as plain as in the reference image.
Vertical 9:16 cinematic video, no dialogue. The person from the first reference image and the person from the second reference image stand in a bright gym; with a comic pop their arms and shoulders suddenly grow huge and cartoonishly muscular like bodybuilders, their plain t-shirts stretched tight. They flex, look at their arms in disbelief and burst out laughing. Clearly a playful, exaggerated filter effect. Nothing sexual, no weapons, no blood, no gore. Audio: a comedic boing sound and an upbeat workout beat, no speech and no singing. All clothing is plain and unbranded: no logos, no brand marks, no lettering, no symbols and no text anywhere in the frame. Only these two people appear as subjects; no children. Both are adults. Keep both faces and hairstyles identical to the reference images, and keep the outfits as plain as in the reference images.
Muscle Filter FAQ
What does the Muscle Filter effect do?
Pop: suddenly huge cartoon muscles. Flex and laugh. The video is 12 seconds long, vertical, with a comedic boing sound and an upbeat workout beat; no speech, no singing.
How much does a Muscle Filter video cost?
Every effect uses 10 credits per video. One video costs $9.90; packs of two and three videos cost less per video. Credits do not expire.
Can two people be in the video?
Yes. Upload one photo of each person, or one photo showing both of you. Both must be adults.
Video model and sources
Videos are rendered with Seedance 2.0 Fast (ByteDance) through KIE.ai.





