sangtao.ai
API key

Video (Motion)

Editing in the editor

Change words and pictures, add / remove / split / merge scenes, change the look and ask the AI assistant in the video editor.

Once AI has built it, the project opens in the editor: the content as a form on the left, the video preview on the right — it updates as you edit. Every change saves itself to your account; open the project again from Your projects on the Motion page.

The editor: on the left the Assistant / Content / Sound / Look tabs, on the right the video preview and player bar; in the top bar the Undo button and the "Export video" button circled in red

Layout

  • Top bar: Projects (back to the list), switch between the basic editor and Advanced, Undo / Redo (Ctrl+Z / Ctrl+Shift+Z), the More options menu and the Export video button.
  • Tabs on the left (depending on the template): Content, Sound, Look, and Assistant on your own projects. A red dot on a tab means a field to fix; an amber dot means a scene still has no picture.
  • On the right: the video preview. Press the video or the player bar to play / pause; press a scene on the left and the video jumps to it.
  • On a phone, switch between Edit and Preview in the bottom bar.

Change content and pictures

Step 1. Change the words

In the Content tab, edit right in the fields. Words & captions lets you fix the words of any caption, or find and replace a word across the video — the voice stays as it is.

Step 2. Change a scene's picture

Press Change on the scene's Picture. Pick a version you have, search free stock photos / videos, upload your own, choose from the illustrations, or Create with AI (charged, about 15–60 seconds a picture). The new picture replaces the old one — Ctrl+Z brings it back.

Step 3. Add, remove and reorder scenes

The buttons at the top of each scene card (hover to see their names; which ones show depends on the template): up / down, Duplicate, Add scene after, Split scene, Merge with next scene and ✕ to remove.

  • Free and undoable: deleting a scene (its words are cut from the voice, with a preview of the join), reordering, splitting, merging.
  • Add scene or Duplicate reads new words in the video's voice, so you see the price before it is added.

A scene card in the Content tab: the row of up / down / duplicate / add scene after / split / merge / ✕ buttons at the top, and the Picture field with its "Change" button

Change the look

The Look tab holds the template's look options, for example Style (the text and colour set) or AI picture style (used for new AI pictures; pictures already made stay). Changing the Style here costs nothing — pictures and voice stay. Advanced settings at the bottom of each tab holds the fields you rarely need. Voice and music are in the Sound tab — see Voice and background music.

Ask the AI assistant

The Assistant tab takes requests in plain words: "make the music livelier", "bigger, easier captions", "check my video"… Type "/" to pick something quickly, attach up to 5 pictures. The assistant proposes a change and you press Apply or Discard; anything that costs credits (like making pictures) always asks Yes with the price first.

Paper cut-out videos

A paper cut-out project has a Change pictures panel in the Content tab: press an object, backdrop or side character, describe the new picture and press Draw again (charged, 1–3 minutes). The new picture changes in every scene that has it; the one just before can be brought back for free.

More tips

  • The More options menu: view each Format, Duplicate project, turn Use brand kit in this project on or off, see Project costs.
  • The Advanced editor (timeline, every element by hand) opens on a computer only.
  • The same project open in two tabs: when both change the same thing, you are asked which to keep.

See also