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How do I create a video using Assistant?

Learn how to create and refine a video using Assistant — a chat-based AI that helps you write scripts, select templates, choose a delivery style, and improve your video directly inside the Editor.

Written by Meg Farley

📌 Assistant is available on Starter, Creator, and Enterprise plans.


📌 Using a brand kit with Assistant is an Enterprise only feature

If you would like to upgrade your plan, check out our plan upgrade guide.


What is Assistant?

Assistant is a chat-based AI agent built directly into Synthesia that helps you create and refine videos from start to finish. Because it’s agentic, Assistant doesn’t just suggest improvements — it can take action inside your video, updating scripts and visuals for you in real time.

It can:

  • Turn a prompt (and supporting files) into a complete first draft

  • Write and improve your script

  • Create and update visuals

  • Suggest ways to make your video more engaging

Instead of generating a video in one attempt, Assistant works with you through iteration — so you can refine your video step by step inside the Editor.


How to Create a Video with Assistant

Prompt to video

  1. On the Home screen, select Create video.

  2. In the prompt field, describe the video you want to create. Include:

    • The topic

    • The target audience

    • The objective

  3. (Optional) Select Attach to add supporting materials, such as PDFs, PowerPoint files, Word documents, or URLs. You can add more than one file at once.

  4. Choose a Video duration: Short, Medium, or Long.

  5. Submit your prompt to open the Assistant setup screen.

  6. Under Style, choose a Delivery style:

    • Presentation

    • Dynamic

  7. Under Style, set your Template:

    • Leave Template on Auto to let Assistant choose one for you, or

    • Choose a template from By Synthesia or from Your library.

  8. Under Style, choose a Brand kit to apply your brand colors, fonts, and logos. To skip branding, choose No Brand Kit. See how to use a Synthesia brand kit.

  9. Review the Outline. Assistant drafts your video as a set of numbered sections. You can:

    • Edit the text in any section

    • Delete a section

    • Select Add to add a new section

  10. Select Generate video to create the full video, or select Continue to editor to open your video in the Editor first.

Other ways to start: On the Home screen, select More to open Explore templates, Import script, or Use legacy assistant.


Import script

Use Import script when you have a finalized script and want Assistant to use it without rewriting.

  1. On the Home screen, select More, then select Import script.

  2. In the script field, paste or type your script.

  3. (Optional) Select Upload files to add a script file.

  4. Under Style, choose your Delivery style, Template, and Brand kit.

  5. Submit your script to continue.


Create with legacy AI Assistant


💡 Example of a strong prompt:

"Create an onboarding video for new product managers at a fintech company. The goal is to explain our product development lifecycle and key collaboration tools. Keep the tone professional but friendly."

The more relevant context you provide, the stronger your first draft will be.


Reviewing and Refining Your Video with Assistant

After selecting Create video, you’ll enter the Storyboard layout.

✍️ Storyboard is a macro-level view of your video where you can see:

  • Script on the left

  • Scene visuals in the center

  • The Assistant chat panel on the right

This layout allows you to review and refine your entire video in one place.

Use the Assistant chat panel to iterate on your video. You can ask it to:

  • Make the video shorter

  • Adjust the tone (e.g., “Make this more executive”)

  • Improve engagement

  • Rewrite specific scenes

  • Change visuals

  • Suggest improvements

Assistant can:

  • Create and revise scripts

  • Update visuals

  • Generate relevant images

  • Provide feedback on how to improve your video

💡 If you prefer scene-level editing, select Collapse in Storyboard to return to the traditional canvas view. You can switch between Storyboard and canvas at any time.


💬FAQs

Is Assistant a replacement for the AI Video Assistant?

Not yet. Assistant will eventually replaces the legacy AI Video Assistant as it can provide a more powerful, iterative, chat-based experience.

Does Assistant consume credits?

No. Assistant is free to use and does not consume credits.

Will my Assistant chat history be saved if I leave or refresh the page?

Yes. Your Assistant conversation persists and is private to you, so you won’t lose progress if you leave and return later.

What does “agentic” mean?

“Agentic” means Assistant can take actions on your behalf, such as writing a script or creating visuals. These actions are limited to the capabilities we’ve enabled inside Synthesia.


📚 Want to get the most out of Assistant? Work through the Work Smarter with Assistant learning path in Synthesia Academy to master the full video creation workflow.

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