MP4E — Interactive video that travels in the file

Overview

A “project” in Studio is a video plus its MP4E metadata (objects, layers/overlays, variables, rules, scenes, plugins, and settings).

Typical flow

1) Open Studio (Editor)
   - Studio routes to /editor/new by default

2) Library → Projects
   - Upload a video (Plus button), or click an existing project tile to open it

3) Edit
   - Objects, Layers/Overlays, Variables, Rules, Scenes

4) Export
   - Export Video (MP4 with embedded MP4E metadata)

Open or Create a Project

The editor starts at /editor/new. From there you can upload a new video or pick an existing one from the library.

Where projects live in the UI

Use Library → Projects to browse your available videos/projects. Clicking a tile loads it into the editor.

Upload a Video

In Library → Projects, click the Plus button to upload a video file. After upload completes, Studio opens that video in the editor.

Upload first, then process

Uploading stores the asset. Processing is what generates the tracked objects and core metadata (see Video Processing).

Saving, Undo/Redo, Versioning

Studio supports Save plus Undo/Redo. Under the hood, Studio keeps a version history so you can step backward/forward safely while iterating.

While you have unsaved edits, Undo and Redo first ask you to confirm, because both discard every change made since the last save — not just the last edit. Undo then returns the project to that saved version; with nothing unsaved, Undo keeps stepping back through the saved versions one at a time and Redo walks the same path forward.

Autosave and conflicts

Studio uses optimistic versioning when saving. If the server version changes (for example, another session saved first), Studio will surface a version conflict so you can reload and continue from the latest state.

Project Settings

Project settings are configured in two places:

Library Panel → Projects → Settings: Project name, editor settings (auto-save), runtime flags
Player Panel (right side): Playback behavior, controls skin, interactions, menu config, chapter markers, thumbnails

Player Panel

Switch to the Player Panel (right side) to configure how your video plays: controls skin, click/double-click behavior, chapter markers on the progress bar, and thumbnail previews. These settings are saved to metadata.player.

Metadata Import/Export

Use the top menu File for:

Export Metadata JSON: download the full current metadata state (including your local edits).
Import Metadata JSON: upload a metadata JSON file and replace the project metadata.
Export Video: download the MP4 with MP4E metadata embedded.

Metadata JSON is a power tool