Blue Line Filter AI: The Time Warp Scan Face, Starring You
A thin blue line slides down the screen, freezes everything it passes and leaves you with a stretched, warped face. One photo of you is all it takes.
Updated : Page published.
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The blue line filter (also sold as blue light scan) is the TikTok Time Warp Scan effect, in which a cyan line sweeps down the screen and freezes each row it passes so a moving face ends up stretched and warped; videosi makes it from one photo of you.
- Fast facts
- First seen
- Stage
- Past its peak
- Started on
- TikTok (unconfirmed)
- Sound
- No single sound: most posts use their own original sound.
- Meaning
- The blue light scan is the TikTok Time Warp Scan effect: a cyan line sweeps across the screen and freezes everything it has passed, so moving during the scan leaves a stretched or doubled picture.
- Related trends
- Prank Filter, S Line Filter AI
Page updates
- November 3, 2026 — Page published.
The Blue Line Filter AI prompt and model
Blue Line Filter AI is made with Seedance 2.0 / 2.5 (you pick the tier) by ByteDance. The prompt behind it has 5 parts, and the timing is what makes or breaks it.
- Model
- Seedance 2.0 / 2.5 (you pick the tier)
- Mode
- Photo + motion reference to video
- Length
- 9 seconds, 9:16, 1:1 or 16:9
- Input
- 1 photo
- Replace The person in the motion reference is swapped for the person in your photo, keeping the selfie framing and the timing of the scan.
- Identity lock Your photo is the only source for the face, hair, skin tone and outfit, and your face shape is never slimmed toward the reference.
- Scan rule Everything the cyan line has passed freezes and stays frozen; only the part below the line is still live.
- The warp You pull a face and drop your chin as the line crosses, so the frozen face comes out stretched.
- Rules One adult, one continuous phone shot, no speaking or singing, no text or watermark; the trend sound is added after the render.
Replace the person in Video 1 with the person from Image 1. Keep the selfie close-up and the thin glowing cyan scan line that sweeps from top to bottom…
Why it goes wrong when you do it yourself
- Asked for a time warp scan in words alone, most video models draw a moving blue line but do not freeze anything behind it, so there is no warp.
- Without a motion reference the line moves too fast or the face never moves, and the frozen image is just a normal photo.
- If the identity is not locked first, the stretched part of the face drifts into a stranger's chin and mouth.
- Each try costs credits and several minutes, and getting a funny stretch in one continuous shot often takes more than one try.
More videos from this trend
Trend inspiration · not a selectable template
How to make your Blue Line Filter AI video
Upload one photo of yourself
A clear, front-facing photo with your whole face and some neck in frame. The hair and top in the photo are what you wear in the video.
Pick the format
9:16 for TikTok, Reels and Shorts, or 1:1 and 16:9.
Generate and download
Press Generate and the 9-second blue line clip is rendered for you, an MP4 with no watermark and the trend sound already on it.
Post it
Post it as it is or swap the sound in your app, and label the clip as AI-generated.
What is the Blue Line Filter AI trend?
Updated · videosi is an independent tool. It is not affiliated with TikTok, Instagram, YouTube, or with the owners of any trend, song, game or brand named on its pages.
The blue light scan is what many people call the Time Warp Scan, a TikTok camera effect. A thin glowing cyan line sweeps across the screen, top to bottom or left to right. Everything the line has already passed freezes like a photo, while everything it has not reached keeps moving. Move your face, your chin or your whole body as the line goes by and the frozen picture comes out stretched, doubled or in pieces.
The effect took off on TikTok in October 2020. The most viewed post we found is a November 2020 close-up by a pop star whose face melts into a long rippled chin, with about 400 million plays; other big posts from October and November 2020 used it for floating heads, mirror twins and pretend vape smoke. It never fully went away: in 2023 and 2025 bathroom-mirror versions passed 40 million and 12 million plays, and in 2026 AI apps began selling a one-photo "blue light scan" template.
There is no single song. Most posts use their own original sound, and some add a track such as "Little Dark Age" by MGMT.
This page makes the classic face-warp version from one photo: the cyan line slides down while you pull a face, and the frozen result is your own stretched face. The trend sound from the most viewed post is already on the video. As of November 2026 the blue light scan wave is fading after a short spike in mid October.
Blue Line Filter AI: shot by shot
- 0-1 s
Line appears
A close-up selfie of you lying back. A thin glowing cyan line appears at the very top of the frame.
- 1-4 s
Hair freezes
The line slides over your hair and forehead. Everything above it is now a still picture while your eyes still move.
- 4-6.5 s
Over the eyes
The line crosses your eyes and nose. You start to pull a face and drop your chin as it goes.
- 6.5-9 s
The warp
The line reaches your mouth and neck while you slide down, so the frozen face stretches into a long rippled chin. The line exits at the bottom.
Tips for a better result
Face the camera
A straight, front-facing photo gives the model the face it has to stretch. Side profiles warp badly.
Show your chin and neck
The warp happens around the mouth, chin and neck, so crop below the collarbone, not at the chin.
Plain background
A simple wall or pillow behind you keeps the frozen part clean and makes the stretch easy to read.
No sunglasses or masks
Clear glasses are fine. Sunglasses, masks and hands over the face hide what the scan is about.
Good to know before you make a Blue Line Filter AI video
- This is the classic top-to-bottom face warp. The sideways mirror and floating-head versions in the examples need a real camera and are not made here.
- The warp is generated, not computed row by row like the TikTok filter, so the stretch looks different on every render.
- Likeness is not guaranteed, and it is weakest in the stretched lower half of the face.
- Only adults. A failed, timed-out or blocked render returns its credits automatically.
Blue Line Filter AI: questions
What is the blue light scan trend?
The blue light scan is the TikTok Time Warp Scan effect, popular since October 2020: a thin cyan line sweeps across the screen and freezes everything it passes. videosi makes a 9-second version from one photo, with the line sliding down your face and leaving a stretched, warped result.
How do I make the blue light scan video from one photo?
On videosi you upload one clear, front-facing photo, pick 9:16, 1:1 or 16:9 and press Generate. About 9 seconds of video come back with the cyan line sweeping down, your face freezing behind it and the trend sound already on it. You do not write a prompt.
Is there a blue light scan AI generator or website?
Yes. videosi has a blue light scan AI generator on this page that turns one photo into the time warp scan video in about 9 seconds of footage. It runs in the browser on phone or desktop, with no app to install.
Is the time warp scan a TikTok filter or a CapCut template?
Both exist. Time Warp Scan is a free TikTok camera effect that needs you to film yourself live, and CapCut has templates with the blue line. videosi is for when you only have a photo: it generates the scan and the warp from one picture.
What AI model and prompt are used?
videosi uses ByteDance's Seedance 2.0 family (you pick the tier) with the most viewed time warp scan post as a silent motion reference. The prompt swaps in your face, locks your identity and tells the model to freeze everything above the line. The full prompt is not published.
How much does the blue light scan AI cost?
A Standard 720p blue light scan video costs 10 credits on videosi. The Single pack is US$6.99 for 10 credits, and bigger packs and plans lower the price per video. A failed render returns its credits automatically.
Why does my face not look like me?
The stretched lower half of the face is where likeness drops most, because the model has to invent a warped chin and mouth. Use a sharp, front-facing photo with your neck in frame and good light; that fixes most cases on videosi.
Can I use a friend's photo or my pet?
Yes, on videosi you can use a photo of any adult who agreed to it. The page is built for one human face; pets work less well because the warp relies on a face pulling an expression as the line passes. Photos of children are not accepted.
What does the blue line filter mean?
"Blue line filter" is another name for the Time Warp Scan: the blue line is a moving freeze line. Anything above or behind it is frozen, so people use it to make melting faces, floating heads and mirror twins. videosi recreates the face-warp version from one photo.
What song is used in the blue light scan trend?
There is no single confirmed song. Most time warp scan posts since 2020 use their own original sound, and some use tracks such as "Little Dark Age" by MGMT. The videosi version carries the original sound of the most viewed post.
Is the blue light scan still trending?
As of November 2026 the blue light scan is fading: the name spiked around 16 October 2026 and was past its peak by 27 October. The underlying Time Warp Scan has come back every year since October 2020, with new posts still passing millions of plays. The videosi page stays up as a reference.
Can I do the mirror or sideways version?
Not on this page yet. The sideways mirror and floating-head versions depend on real camera tricks, so videosi only makes the classic top-to-bottom face warp from a photo, 9 seconds long.
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