📌 This feature is only available for Synthesia Starter, Creator and Enterprise Plan Customers.
If you would like to upgrade, use our Plan upgrade guide
To create content with AI:
Click the New video button in the top right-hand corner of your screen.
Choose your template, you are able to use any template with this feature, including custom templates.
Select a Brand kit, if required.
Click the Create with AI button
Select your Source: File, URL, Prompt, or Script
For Prompt, describe your video's topic and provide any relevant instructions.
For Script, insert your text into the box to be used word-for-word in the video script. Divide your script into scenes by using paragraph breaks.
Select the length of your project. This will not be the exact duration but an approximation.
Add any additional fields you wish your video to have:
Objective
Audience
Language
Speaker
Tone
Click Create Outline. This will draft an outline of the script.
Edit this outline to cover the right topics and tweak the structure of the outline.
Click Create Video. Script and scenes will be displayed.
Select Replace layout to replace any scene generated by the AI assistant with another one from the selected template.
Click Generate Video to create the video as is, or click Continue in Editor to modify any elements.
Once complete, click Generate at the top right of the page.
Find out more about AI assistant in the AI Assistant documentation.
You can also find out more details about how this data is processed, by visiting the Synthesia legal hub.
💬 FAQs
What file types can I upload?
What file types can I upload?
You can upload .ppt, .pptx, .pdf, .doc, .docx, or .txt files.
What are the upload limits?
What are the upload limits?
File size: Max 50MB
Script length: Max 30,000 tokens (≈20,000 words)
What are the limits for URLs?
What are the limits for URLs?
Minimum: 60 tokens (≈45 words) or 1 image
Maximum: 30,000 tokens (≈20,000 words)
How are PowerPoint files used?
How are PowerPoint files used?
If your PowerPoint includes speaker notes, those will be used to generate the script.
How long can AI Assist videos be?
How long can AI Assist videos be?
AI Assist videos have a 5-minute limit. For longer videos, you can:
Split the content into multiple videos
Use the Editor, which supports longer durations
Can I keep editing in the AI Assistant after starting?
Can I keep editing in the AI Assistant after starting?
No. Once you enter the Editor or click Generate, the video becomes a regular project.
To make script changes after that, use Edit with AI or start a new video in the AI Assistant.