Export, Storage & Drive
Rendering and Downloading
How in-browser WebCodecs rendering works, export times, resolution options, and watermark policies.
3 min read•Last updated: September 2026
In-Browser WebCodecs Rendering
When you click Apply & re-render, Explayner normalizes scenes, loads assets, draws frames onto an off-screen canvas in a Web Worker, and encodes the video locally using your browser's hardware-accelerated WebCodecs.
Audio tracks (narration, music, SFX) are mixed simultaneously into a single, high-bitrate MP4 file.
Downloading & Watermark Notice
Once the status indicates Video complete - ready to play and download, click the export icon to save the MP4 to your downloads folder.
Certain free-tier deployments may include an explayner.com watermark badge in the corner of exports.