How do I create a video using Assistant? | Synthesia Knowledge Base

📌 Assistant is available on Starter, Pro, 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 into Synthesia that helps you create and refine videos from start to finish. Assistant is agentic, so Assistant does not only suggest improvements. Assistant can take action inside your video and update scripts and visuals for you in real time.

Assistant 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.

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

Create a Video With Assistant

Prompt to Video

To create a video from a prompt:

On the Home screen, select Create video.
In the prompt field, describe the video you want to create. Include:
- The topic
- The target audience
- The objective
(Optional) Select +, and then select Attach to add supporting materials, such as PDFs, PowerPoint files, Word documents, or URLs. You can add more than one file at once.
Choose a Video duration: Auto, Short, Medium, or Long.
Submit your prompt to open the Assistant setup screen.
Under Style, choose a Delivery style:
- Presentation
- Dynamic
Under Style, set your Template:
- Leave Template on Auto to let Assistant choose one for you.
- Or choose a template from By Synthesia or Your library.
Under Style, choose a Brand kit to apply your brand colors, fonts, and logos. To skip branding, choose No Brand Kit. To learn more, check out How do I use a Synthesia brand kit?
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.
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.

💡 Want AI video presets in your Assistant video? Use the Dynamic delivery style to include eligible b-roll in your video.

💡 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 is.

Import Script

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

On the Home screen, select More, and then select Import script. If More is not shown, select Start with Assistant, and then select Import script.
In the script field, paste or type your script. Separate paragraphs with a blank line to start a new scene.
(Optional) Select Upload files to add a script file.
Under Style, choose your Delivery style, Template, and Brand kit.
Submit your script to continue.

Create With the Legacy AI Assistant

📚 To learn about the legacy assistant, check out How do I create content with the AI Video Assistant?

Review and Refine Your Video With Assistant

After you select Create video, you enter the Storyboard layout.

✍️ Storyboard is a macro-level view of your video. The view shows the script, the scene visuals, and the Assistant chat panel, so you can review and refine your entire video in one place.

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

Make the video shorter.
Adjust the tone, for example "Make this more executive".
Improve engagement.
Rewrite specific scenes.
Change visuals.
Suggest improvements.

Assistant can create and revise scripts, update visuals, generate relevant images, and give feedback on how to improve your video.

Use Quick Actions on a Storyboard Scene

Quick actions are one-click writing tools on each Storyboard scene. Use quick actions to edit one scene without writing a prompt.

To use a quick action:

In the Storyboard, go to the scene you want to change.
Select one of the quick actions:
- Improve writing
- Shorten
- Longer
- Change tone, and then choose Professional, Entertaining, Casual, Informative, or Engaging

Each scene also has an Ask AI input. Use Ask AI to make scene-specific edits without telling Assistant which scene to change.

✍️ Quick actions run in the main Assistant thread. The chat is not available while a quick action is processing.

💡 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. To rate a reply from Assistant, select the thumbs up or thumbs down.

💬 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.

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

Yes, your Assistant conversation persists and is private to you, so you do not lose progress if you leave and return later.

What are quick actions in Assistant?

Quick actions are one-click writing tools on each Storyboard scene: Improve writing, Shorten, Longer, and Change tone. Each scene also has an Ask AI input for scene-specific edits.

Can I use the Assistant chat while a quick action runs?

No, the chat is not available while a quick action is processing, because quick actions run in the main Assistant thread.

📚 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.

📚 For a full reference, visit Assistant – Synthesia Docs