Percify APIRewrite what people say in a video
The clip keeps its scene and performance while the speaker says your new lines, with the lips matched to them. For creators reworking a clip they already have.
- Price
- $0.05 a secondwith InfiniteTalk Fast, plus $0.125 each for step 1
- You send
- the video you already have and the audio from step 1
- You get
- revoiced video
How it works
Send the new lines as text
Text to speech turns it into an audio file of the new lines. That goes with the video you already have in the second call.
We run InfiniteTalk Fast
$0.05 a second, plus $0.125 each for step 1. Charged when it starts, refunded by itself if it fails.
Collect a revoiced video
GET /generations/{id}?wait=55 returns the same video with the speaker saying your new lines, lips in sync, as a file URL. Or pass a webhook and we call you.
Make the new lines as audio first (use voice cloning instead to keep the original voice), then send that audio with the video.
2 models for this, by price
Prices are read from the live catalog. Each one opens the playground with this use case filled in.
The request
Step 2, with a sample file where the audio from step 1 goes. Swap in your own URLs.
curl https://api.percify.io/v3/playground/v1/run \
-H "Authorization: Bearer $PERCIFY_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"modelId": "speech-02-turbo",
"input": {
"text": "Greetings, future humans. Who is in charge here?"
}
}'curl https://api.percify.io/v3/playground/v1/run \
-H "Authorization: Bearer $PERCIFY_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"modelId": "infinitetalk-fast",
"input": {
"audio": "https://cdn.percify.io/media-assets/playground/e320274d-865f-4ea9-ad76-70fcd5d025df-0",
"image": "https://cdn.percify.io/media-assets/playground-examples/infinitetalk-fast/4.mp4"
}
}'Full reference in the docs. Every field InfiniteTalk Fast takes is on its model page.
Questions
What do I send to rewrite what people say in a video?
Two calls. First the new lines as text, which returns an audio file of the new lines. Then the video you already have and the audio from step 1 in one POST to https://api.percify.io/v3/playground/v1/run. You get the same video with the speaker saying your new lines, lips in sync.
What does it cost?
With InfiniteTalk Fast it is $0.05 a second (2 credits a second). The picks on this page range from $0.05 a second to $0.10 a second. The estimate call returns the exact price of your input before you run it, and a run that fails is refunded.
Which model should I use?
Budget: InfiniteTalk Fast ($0.05 a second). Premium: InfiniteTalk ($0.10 a second). Switching is one string in the request: the model id.
Can an AI agent do this for me?
Yes. Connect your agent to the MCP server at https://mcp.percify.io/mcp and ask for it in plain words. The agent calls the generate tool with the same model id and input shown on this page, and the call spends the same credits.
Related use cases
- Turn a voice message into a video greetingA recorded message and a photo become a video greeting someone can share.
- Cinematic shots for trailersA shot description becomes a cinematic clip for a trailer or a pitch.
- Animated scenes for children's storiesEach page of a story becomes a short animated scene.
