Photo-to-video AI takes one still photo and turns it into a short clip: the AI invents the movement, and often the background and the camera too. A person swap starts from a real video and replaces the people in it with the people from your photos, so the moves, camera, lighting and sound come from the original. Pick photo-to-video when you only have a picture and want it to come alive; pick a person swap when you want to be in a specific scene, dance or trend.
What is photo-to-video AI?
Photo-to-video (also called image-to-video, or "animate a photo") starts from a single picture. You upload it, usually add a short text describing what should happen, and the AI generates a few seconds of motion: a smile, a turn of the head, hair in the wind, a slow camera push.
Everything that moves is made up by the AI. The photo sets how the person and the place look; the motion comes from the AI's guess or from your text. That makes it good for bringing an old family photo or a portrait to life, and much harder to use when you need one exact move, such as the steps of a well-known dance.
What is a person swap in a video?
A person swap starts from a video that already exists. The AI finds the people in it, you add a photo for each person you want to replace, and it generates a new video in which your people take their place. The choreography, the camera work, the timing and the soundtrack stay as in the source.
On vswp, you pick a video from the Trends library, where the people are already found, or upload your own. Everyone without a photo stays as in the original. The deeper mechanics are in how AI video face swap works.
What's the difference at a glance?
| Photo-to-video | Person swap in a video | |
|---|---|---|
| You start from | One still photo | A real video plus photos |
| Where the motion comes from | Generated by the AI | The original video |
| Camera and scene | Invented around the photo | Kept from the original |
| Sound | Generated or added separately, if at all | The original audio |
| Best for | Bringing a single picture to life | Putting yourself into a known scene or trend |
The short version: in photo-to-video the photo is the scene and the AI writes the action; in a person swap the video is the scene and the photo only decides who plays the part.
When is photo-to-video the better choice?
- You have a photo and no video. An old print of your grandparents, a childhood picture or a portrait that you want to see moving for a few seconds.
- The motion is small. A blink, a smile, a gentle turn. Small movements are easier to make believable than a full dance.
- You don't need a specific scene. If any pleasant motion will do, there is nothing for a source video to add.
Results vary a lot with the photo and the text you give. Faces can change as they turn, and long or complex actions tend to drift.
When is a person swap the better choice?
- You want a particular scene. A trending dance, a movie moment, a meme everyone knows. The action has to match the original, and a person swap copies it instead of guessing.
- You want sound and timing. The music, the voices and every beat stay where they were, because the original audio goes back on.
- There are several people. A swap can put a whole group of friends into one clip, each with their own photo; on vswp that's up to 6 different photos per video.
- You want your own clothes. With Keep the original look off, the look (clothes, hair) comes from the photo; a full-body photo of one person carries clothing, hair and silhouette best. With it on, clothes stay as in the video and only faces and hair change.
What do you need for a person swap on vswp?
- A video. One from Trends, or your own: 1 to 120 seconds, up to 150 MB, any common format. Here's how to choose a video that works.
- Wait for the person search. It runs on its own on the first 30 seconds, usually in a couple of minutes, and it's free. For a longer video you can pick another part of up to 30 seconds.
- One photo per person. Up to 6 photos, as JPEG, PNG or WebP. A sharp photo of one person in good light works best; see which photos work best.
- Check the price and press Create video. The app shows the estimated time and the price in Telegram Stars (⭐) first. It depends on length, quality and the number of people.
- Get the MP4. The processed part, up to 30 seconds, with the original audio, at 480p or 720p. Download it, or on a phone share it to Telegram, stories and other apps.
New users can start with a free preview: a few seconds of their video at 480p with a small "vswp.app" mark. Stars for a full video are taken when the render starts and come back automatically if it fails or is canceled.
What are the limits of each?
Both are generative AI, not frame-exact editing, so neither promises a perfect copy of a face.
- Photo-to-video can drift from the photo as the person moves, and the more action you ask for, the more it has to invent.
- A person swap keeps the action, but likeness, hands, things covering the face, very fast camera motion and crowded scenes can need another take. People seen very briefly or heavily blurred may not be found.
Pressing Create video again makes a new take, which is a new render.
What about consent?
The same rules apply to both. Use only photos and videos you have the right to use, and ask before you put someone else's face into anything. If you post the result, a "made with AI" note is a good habit; in the EU, the AI Act's disclosure rule for deepfakes applies from August 2026. Rules differ by country, and this is not legal advice. The AI video glossary explains the terms, and face swap consent and safety covers the rest.
FAQ
Can photo-to-video copy a specific dance?
Not reliably. It invents motion from a still picture, so an exact routine is hard to match. To be in a particular dance, start from a video of it and swap yourself in.
Does a person swap need a video of me?
No. You only need a photo of yourself. The video can be a trend or any clip you have the right to use, and the moves come from the people in it.
Does vswp animate photos?
No. vswp swaps people into existing videos: you add photos, and the moves, camera, lighting and sound stay as in the original.
Which one keeps the sound?
A person swap on vswp keeps the original audio of the video. Photo-to-video starts from a silent picture, so any sound has to be generated or added separately.