Sadtalker
2 modes on this page
Sadtalker animates a still image into a video clip. Pick a mode, write the prompt, run it in the studio.
Input
FormMode
Face Model Resolution
Source Image Url*
Preprocess
Expression Scale
Result
PreviewMotion preview, not Sadtalker output
Credits·~90s
What Sadtalker is for
Sadtalker animates a still into a short video clip. Upload the starting frame, describe the motion, and the studio returns a clip in about 90 seconds (Credits). Available modes: Standard and Reference.
Sadtalker is cheap enough that a generation usually fits the free Knowlify plan's credits. A typical run is about 90 seconds.
Pick Sadtalker for image to video at Credits and ~90s. Compare it with Ai Avatar, Argil Avatar on the related cards below if you need a different look, speed, or input type.
How to use Sadtalker
- 1. Upload the still Sadtalker should start from, then write the change or motion in Input.
- 2. Run it. The prompt and file hand off to the Knowlify studio, where Sadtalker generates.
- 3. Stay in the studio if you want that frame or clip inside a longer narrated video.
What you need
- A source still (PNG or JPG) for the model to start from.
- Face Model Resolution (256, 512).
- Preprocess (crop, extcrop, resize, full, and more).
- Optional toggles on this model, such as audio or quality flags.
Example prompt
a sumo wrestler standing in falling snow, steam off the skin, hard-flash editorial, Kodak portra, sharp, no text, no watermark, no logo, slow cinematic camera move, natural motion
Frequently asked questions
How do I run Sadtalker?
Run Sadtalker on Knowlify at /generate/sadtalker. This page has 2 modes in one dropdown. Write the prompt on this page and it opens in the studio, where Sadtalker generates a short clip. The same studio also turns documents into full narrated videos.
Where can I use Sadtalker online?
On Knowlify (knowlify.com/generate/sadtalker). You do not need a separate playground. Sadtalker runs in the studio next to document-to-video.
Can I make a longer video with Sadtalker?
Sadtalker itself produces a short clip. On Knowlify you can take that output, or skip it and upload a document, and generate a full narrated video with a script you can edit.
What do I need to run Sadtalker?
A prompt and a source still. Sadtalker will not invent the starting frame for you on this mode.
How long does Sadtalker take?
Plan on about 90 seconds for a typical run, then whatever queue time the studio has. Video models sit at the high end of that range.
Does Sadtalker have more than one mode?
Yes. This page has 2 modes: Standard and Reference. Switch them in the Mode dropdown instead of opening a new URL.
What does Sad Talker cost?
Knowlify charges this as credits, at the compute cost.
What is Sad Talker best for?
Learning Realistic 3D Motion Coefficients for Stylized Audio-Driven Single Image Talking Face Animation. It animates a still image into a video clip.
Do I need an account to use Sad Talker?
A free Knowlify account, yes. This page composes the prompt; the studio is where Sad Talker actually runs.