Video & Audio Muxer

Video & Audio Muxer

Mux video and audio files from selected formats inside your browser!

Video & Audio Muxer promo image
What is Video & Audio Muxer?

Video & Audio Muxer is a Firefox add-on that allows you to mux video-only and audio-only files, generating a video file with embedded audio. It utilizes the FFmpeg library compiled from C and C++ to JavaScript.

Stats date:
By: Loori
Users: 54 ▲ 2
Rating: 5.00 (1)
Version: 0.1.2 (Last updated: 2021-07-10)
Creation date: 2020-01-02
Weekly download count: 6
Firefox on Android: Yes
Manifest version: 2
  • storage
  • contextMenus
Size: 7.00M
Email: Click to see
URLs: Website
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

Video & Audio Muxer is an add-on that helps you easily mux video-only and audio-only files and generate a video file with embedded audio in your browser.

It uses the FFmpeg library which is compiled from C and C++ language to JavaScript with the Emscripten project. Emscripten is a source-to-source compiler that can compile native C/C++ codes to JavaScript language.

To work with this add-on, just open the app UI and drag input files (video & audio) in the app UI. Then, press on the - Command - button to insert the mux command and finally press on the - Mux - button to start the job. Once the muxing is done, a preview for the resulting video will be shown and a - Download - button will also appear.

Note 1: if you are familiar with FFmpeg commands, you can enter your mux command in the input field. The - Command - button in the app only inserts a common mux command.

Note 2: the default extension for the output video is set similar to the input video file. You can change this file extension, but please enter a proper FFmpeg command to change the final file extension, otherwise, the FFmpeg engine will not be able to mux the inputs for the chosen output file extension.

Note 3: if you have a feature request, or found a bug to report, please fill the bug report form on the add-on's homepage.

User reviews
This is exactly what I needed and performed muxing video and audio tracks INSTANTLY! Amazing work, Thank you!!
by Zedd, 2021-05-11
View all user reviews
Risk impact

Video & Audio Muxer is safe to use. It does not request any sensitive permissions.

Risk likelihood

Video & Audio Muxer has earned a fairly good reputation and likely can be trusted.

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