How to Use AVIMux GUI to Combine Audio and Video AVIMux GUI is a powerful, classic Windows utility designed to multiplex (mux) and demultiplex audio, video, and subtitle streams into AVI and MKV containers. Unlike heavy video editing software, AVIMux GUI combines these files without re-encoding, ensuring zero quality loss and blazing-fast processing speeds.
Here is a step-by-step guide to merging your audio and video files using this tool. Step 1: Download and Launch the Application
AVIMux GUI is a portable application, meaning it does not require a formal installation process.
Download the official ZIP archive from a trusted software repository.
Extract the contents of the ZIP folder to your preferred directory. Double-click the AVIMux_GUI.exe file to launch the program. Step 2: Import Your Media Files
The user interface is divided into two primary panes: the upper pane for source files and the lower pane for output streams. Open the folder containing your video and audio files.
Drag and drop both the video file and the audio file into the upper pane of the AVIMux GUI window.
Alternatively, right-click inside the upper pane, select Add, and browse for your files. Step 3: Generate the Output Streams
Once your source files are listed in the top section, you need to let the software recognize the individual data streams. Click on the video file in the upper pane to highlight it.
Click the Generate data source from files button located directly below the upper pane.
The application will automatically populate the lower pane with the individual video, audio, and subtitle tracks extracted from your source files. Step 4: Configure Stream Settings and Audio Delay
Before saving your new file, verify the stream configuration in the lower pane.
Select Active Tracks: Check the boxes next to the video and audio streams you want to keep. Uncheck any unwanted default audio tracks.
Adjust Audio Sync (Optional): If your audio and video are out of sync, double-click the audio stream in the lower pane. Enter a value in milliseconds in the Delay field. Use positive numbers if the audio plays too early, or negative numbers if it plays too late. Step 5: Multiplex and Save the File
The final step joins the selected streams into a single container. Click the Start button located at the bottom of the window.
A dialog box will appear prompting you to choose an output destination and a filename.
Select your desired container format (typically .avi or .mkv) from the “Save as type” dropdown menu. Click Save to begin the muxing process.
A progress bar will appear, and because no re-encoding takes place, your new combined file will be ready in just a few seconds.
If you run into any issues during the process, let me know. I can help you troubleshoot if you tell me:
The file formats of your original video and audio (e.g., MP4, AVI, AAC, MP3) Any error messages that popped up during the process If the final output has sync issues or missing streams
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