AI video editor | FastPix Developer Documentation

Q: What's the difference between Save changes and Export?

Save changes stores a draft so you can keep editing later. Export renders the edit as a new clip you can publish or download. Export doesn’t save the draft. See Save and export.

Q: Can I edit an exported clip?

No. Open the original clip again, where the button reads Continue editing, change it, and export again.

AI video editor is a browser-based video editor for clips generated by AI video clipping. You open a clip, cut it on the timeline, add captions, text, images, video, and transitions, clean it up with AI tools, and export the result as a new clip. The original clip stays unchanged.

It’s for creators, marketing teams, and media teams who use AI video clipping and want to polish a clip before they publish it. Everything happens in the dashboard, so there’s no download, re-upload, or separate editing tool.

Key concepts

Use these terms the same way across the AI video editor docs. They match the product.

Term	What it means
Clip	A short video generated by AI video clipping. The editor edits one clip at one aspect ratio at a time.
Generated clip	An original clip from AI video clipping, listed under Generated on the Clips page.
Saved edits	A draft of your edit, stored per clip and per aspect ratio. It is not a video yet.
Export	Renders your edit as a new clip in the same project. The original clip and your saved edits stay unchanged.
Edited clip	The new clip an export creates, listed under Edited on the Clips page. It can be published and downloaded, but not opened in the editor again.
Timeline	The bottom panel. Its rows, top to bottom, are Transitions, Images, Text, Video, and Audio.
Split	A cut point at the playhead. A split on its own removes nothing.
Section	The part of the Video row between two splits. Select a section to delete it.
Overlay	A text layer, image, or transition. Each sits on its own row and can be moved and trimmed.
Playhead	The current position in the video. New items are placed at the playhead.
Transcript	The word-timed text of everything said in the clip.
Caption preset	A ready-made caption style, the same catalogue used when generating clips.
Brand kit	A saved set of caption style and colors, logo, intro, outro, and clean-up settings for the workspace.
AI tools	One-click edits driven by the transcript, such as Remove pauses.

Before you begin

Make sure you have the following:

An AI video clipping project with at least one ready clip. A clip is ready when Download HD is available for it. See AI video clipping.
A desktop browser. Chrome is recommended. Edge, Safari, and Firefox also work. Mobile browsers aren’t supported.
Optional: a brand kit, if you want to apply your branding in one step.

How the AI video editor works

Editing a clip follows five stages:

Open a clip: start from a ready clip in an AI video clipping project.
Edit: cut on the timeline, then add captions, text, images, video, transitions, and AI clean-up.
Save a draft: store your edit so you can come back to it.
Export: render the edit as a new clip.
Publish: publish or download the new clip like any other clip.

The original clip is never changed, saved edits are a draft, and every export is a new clip, so you can experiment freely.

Open a clip in the editor

You always start from a clip. There’s no editor link in the dashboard navigation.

Open your Clips project.
Hover over a ready clip and select the Edit clip icon. You can also open the clip and select Edit Clip.

A generated clip's details with the Edit Clip button

Result: The editor opens full screen. The header shows the clip title and aspect ratio, for example “My clip · 9:16”.

If the clip already has saved edits at this aspect ratio, the button reads Continue editing.

NOTE: Edit clip is available once the clip is ready. Until then, the tooltip reads “Available once the clip is ready”. If generation failed, it reads “Edit clip unavailable — processing failed”.

NOTE: The editor edits the aspect ratio selected in the clip window. To edit another ratio, switch it in the clip window first. Each ratio keeps its own saved edits.

NOTE: Edited clips (exports) can’t be opened in the editor.

To leave, select the back arrow in the header. If you have unsaved changes, an Unsaved changes dialog asks you to choose Leave anyway or Stay.

The editor at a glance

The AI video editor with the transcript on the left, the preview on the right, and the timeline along the bottom

Area	What’s there
Header (top)	Back arrow, clip title and aspect ratio with the project name under it, an Unsaved changes or Saved N ago status, and Save changes and Export buttons.
Tool sidebar (left edge)	AI tools, Captions, Upload, Transitions, Text, and Brand kit. B Roll and Music are greyed out with a Soon pill.
Transcript (left panel)	Always visible. Selecting a tool slides its panel over the transcript. Select the tool again to close it.
Preview (right)	The output frame at the clip’s aspect ratio. Drag text and images here. Playback controls are in the timeline bar, not on the preview.
Timeline (bottom)	A top bar with Undo, Redo, Split, Delete, playback controls, a timecode (current / total), and Hide timeline. Below it are the Transitions, Images, Text, Video, and Audio rows.

Both dividers can be dragged: the one between the left panel and the preview, and the one above the timeline.

What you can do

Each task has its own page:

Edit video on the timeline: play, split, delete, trim, add an intro or outro, and use the transcript to navigate.
Add captions: caption the clip with a preset.
Add text, images, and video: overlay text and images, insert or replace video, and add transitions.
Clean up with AI tools: remove pauses and filler words in one step.
Apply a brand kit: apply your caption style, colors, logo, intro, outro, and clean-up settings at once.
Save and export: save a draft and export the edit as a new clip.

Things to know

The AI video editor is in its first release. The following features appear in the editor with a Coming soon or Soon label and can’t be used yet:

Where	Coming soon
Tool sidebar	B Roll, Music
Captions tool	Font tab, Effects tab
Transitions tool	Auto transitions
AI tools	Auto censor, Speech enhancement, AI emoji, AI keywords highlight, Speaker color, AI voiceover
Brand kit page	Aspect ratio and layout, Highlight keywords, Add emojis, Auto B-roll, Auto transitions
Clip window	Export XML

These are current limits of the editor:

The aspect ratio can’t be changed inside the editor. Switch it in the clip window first. Each ratio has its own saved edits.
The timeline has no zoom.
The transcript can’t be edited, and you can’t cut video by deleting words.
Captions can’t be moved or re-worded, and don’t show over intros, outros, or uploaded video.
Export has no settings. The output matches the clip’s aspect ratio: 9:16 is 1080 × 1920, 16:9 is 1920 × 1080, 1:1 is 1080 × 1080, and 4:5 is 1080 × 1350.
There’s no autosave and no version history.
Edited clips can’t be opened in the editor again.
Uploaded files stay in the Upload library only until you reload.
Brand kits can’t be renamed or deleted.
Desktop browsers only.

Frequently asked questions

Does editing change my original clip?

No. The original clip is never changed. Saved edits are a draft, and every export is a new clip.

What's the difference between Save changes and Export?

Save changes stores a draft so you can keep editing later. Export renders the edit as a new clip you can publish or download. Export doesn’t save the draft. See Save and export.

Can I edit an exported clip?

No. Open the original clip again, where the button reads Continue editing, change it, and export again.