Free video to prompt: the AI prompt behind any clip
The videosi Video to Prompt tool writes the text prompt that would make an AI video model generate a clip like yours. Upload a video of up to 60 seconds and it describes the subject, the action beat by beat, the setting, the camera and the look, in one paragraph you can paste into Seedance, Kling, Wan or Veo. The first 3 readings are free, with no sign-up.
The file stays on your device: only 6 to 16 small keyframes are read. 3 free readings, no sign-up.
- 3 free readings, no sign-up
- Seedance, Kling, Wan, Veo
- Clips up to 60 s
What an AI video prompt covers, and where the tool gets it
| Prompt element | What it says | Read from your clip |
|---|---|---|
| Subject | Who or what the video is about, described by look | The people and objects in the keyframes |
| Action | What happens, beat by beat | Changes between keyframes over time |
| Scene or context | Where it happens | The setting in the frames |
| Camera angle and movement | Shot size, angle, pan, push, handheld | How framing changes from frame to frame |
| Visual style and lighting | Look, color, light and mood | Color, contrast and light in the frames |
| Length and aspect ratio | Duration and 9:16, 1:1 or 16:9 | The clip itself |
| Negative prompt | What to keep out | Written as a short list for models that take one |
The elements follow Google's Veo prompt guide (subject, action, scene, camera angles and movements, visual style and lighting, negative prompts), which describes the same anatomy Seedance and Kling prompts use.
How to use the Video to Prompt
Drop the video
Pick an MP4, MOV or WEBM of up to 60 seconds. Your browser takes 6 to 16 small keyframes from it.
Read it
The keyframes go to the analysis model, which writes the prompt, a short version and a shot list. It takes about half a minute.
Copy and generate
Paste the prompt into the video model you use, or star in the clip yourself with videosi's AI body swap.
What is the videosi Video to Prompt?
A video to prompt tool works backwards from a finished video to the words that describe it. The videosi tool looks at keyframes spread across the clip and writes what an AI video model needs: who is in it (described, never named), what they do in order, where, how the camera moves, the light, the style and the length.
It reads the picture only, not the sound, and it describes people by their look rather than guessing who they are. The result is a starting point: models differ, so expect to adjust a word or two. To star in the clip yourself, videosi's AI body swap on the home page keeps the original moves and camera and puts you in the lead, from one photo.
Worked example: from a 12-second dance clip to a prompt
Say you drop a 12-second vertical clip of someone dancing on a rooftop at sunset. The tool takes 12 keyframes, one per second, and returns a prompt along the lines of: a young woman in a white tank top and wide jeans dances on a city rooftop at golden hour, steps side to side, spins on the beat, then points at the camera; medium-wide shot, slow push-in, warm backlight, handheld feel; 12 seconds, 9:16.
It also gives a short version under 40 words, a shot list with timings and a negative prompt such as "extra limbs, warped hands, text". Paste the full prompt into Seedance or Kling, or use the short one where a model limits prompt length.
What the Video to Prompt can and cannot tell you
- It reads the picture only, not the sound, so dialogue and music are not in the prompt.
- Keyframes are spread across the clip, so a very fast move between two keyframes can be summarized rather than described step by step.
- People are described by their look and never named, so a prompt never reproduces a specific real person.
- No prompt reproduces a video exactly; each model renders people and motion its own way.
Sources, checked November 4, 2026
- Google Cloud: Video generation prompt guide (Veo)
- Kling AI: Kling VIDEO 3.0 model user guide
- BytePlus ModelArk: Seedance prompt guides
Platforms change their apps and limits without notice; open the official page before a decision that depends on an exact number.
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Star in the video instead
AI body swap on videosi keeps the original moves, camera and setting and puts you in the lead, from one photo. The breakdown is free; you see the price before you pay.
Try AI body swapQuestions
How do I get the prompt from a video?
Open videosi.io/tools/video-to-prompt, drop a clip of up to 60 seconds and press Get the prompt. videosi reads keyframes of the video and returns a full prompt, a short prompt and a shot list you can copy. Your first 3 readings are free, with no sign-up.
Which AI video models does the prompt work with?
The prompt is plain, model-neutral English that works in Seedance 2.0 and 2.5, Kling, Wan and Google Veo. It states the aspect ratio and the length, which most models also take as settings.
Is the video uploaded or stored?
The video file stays on your device. Your browser sends 6 to 16 small keyframes (512 pixels on the long side) to DeepSeek, the model that reads them, and videosi does not keep them after the answer.
Will the AI video look exactly like the original?
No prompt reproduces a video exactly: each model renders people, places and motion its own way. The prompt gets the scene, action and camera close. To keep the original footage and put yourself in it, use videosi's AI body swap instead.
Does it work on TikTok videos?
Yes. Save the TikTok, Reels or Shorts video to your phone, then drop the file in. The tool reads the file, not a link.
Is there a limit on free readings?
Each person gets 3 free readings in all, counted by IP address and by account. After that, readings are included with any videosi plan. Each reading runs an AI model that videosi pays for, and videosi also caps the total free readings across all visitors each day; when that is used up, the tool says so and works again the next day.
Can it name the people or brands in the video?
It describes people by their look, never by name, and it does not guess who anyone is. On-screen text is copied as written.