Open Beta

MixStūra

Video Downloader & Stream Muxer

An independent browser extension designed for detecting supported media streams and downloading/muxing them through its supported workflow.

Currently in open beta testing. Feedback and bug reports are welcome.
MixStūra Open Beta
Active Tab
Detected Source example.com/media/stream-source
Available Streams 3 detected
1080p
Video + Audio AVC1 / AAC • MP4
Muxing
720p
Video + Audio AVC1 / AAC • MP4
Ready
480p
Video + Audio AVC1 / AAC • MP4
Ready
Stream Muxing Pipeline 78%
Processing Output
Settings
Capabilities

Designed for Stream Processing

Core functionality built directly into a lightweight browser extension architecture.

Stream Detection

Detect supported media streams available on the active browser tab as network requests occur.

Quality Selection

Choose from available stream qualities and resolutions when provided by the underlying source.

Download Manager

Track active download tasks, monitor current progress, and view processing states in real time.

Stream Muxing

Combine compatible media streams into a final unified media file through the supported processing pipeline.

Browser Extension

Designed to work seamlessly inside your browser rather than requiring a separate standalone application.

Open Development

The project is currently undergoing open beta testing, actively welcoming community feedback and suggestions.

Workflow

How It Works

A straightforward four-step process from stream identification to output file.

01 — Detect

Detect

Find supported media streams automatically as you browse content on the active web page.

02 — Select

Select

Choose the preferred stream format, resolution, and audio track from available detected sources.

03 — Download

Download

Start a download and track its progress directly in the extension.

04 — Mux

Mux

Combine compatible streams into the final media container for seamless local playback.

Public Testing

MixStūra is in open beta

MixStūra is an independently developed project currently in open beta. Some features and behaviors may change as development continues. If something does not work as expected, reporting it helps shape the product.

Compatibility

Browser Support

Targeted browser platforms supported during the beta testing phase.

Google Chrome

Manifest V3 compatible

Beta Build Beta Available Soon

Mozilla Firefox

Gecko / WebExtension build

Beta Build Beta Available Soon
Community & Support

Get in Touch

Direct channels for reporting issues, contributing ideas, and asking questions.

FAQ

Frequently Asked Questions

Common questions regarding the MixStūra project and the open beta.

What is MixStūra?

MixStūra is an independently developed browser extension designed for detecting supported media streams and downloading/muxing them into standard media containers through its built-in processing pipeline.

Is MixStūra free?

During the current open beta phase, MixStūra is free for all beta testers to use and evaluate.

Is MixStūra still in development?

Yes. The extension is actively undergoing open beta testing. Some features and UI elements are being refined based on user reports and testing results.

Which browsers are supported?

MixStūra is currently targeted for Google Chrome and Mozilla Firefox, subject to active beta builds and platform compatibility.

Where can I report a bug?

Bug reports can be submitted directly on the official GitHub Issues tracker. Please include reproducible steps and browser details.

Where can I suggest a feature?

Feature suggestions and improvements are discussed on GitHub Discussions (Ideas category).