Add Multiple Audio Tracks to a Video: Make It Multi-Language

If you’re a content creator or a movie buff, you know that multiple language audio tracks will perfect a video, whether for gaining international views or making whole of a classic film.

Are you planning to add two or more audio tracks to your video? If so, this article is for you.

Below, I’ll share a fast way to help you achieve your goal on a Windows computer. It’s OK if you’re not so tech-savvy, as the instructions will be plain and easy. Let’s start!

• Only MKV, MP4 and MOV video formats support multiple audio tracks.
• Adding audio tracks can be done without re-encoding the video, hence no quality loss and extremely fast.

The tool we’re going to use is WonderFox HD Video Converter Factory Pro. This is a feature-rich software program on Windows with a primary focus on video and audio conversions.

It provides advanced functions besides basic format conversion, including the option to adjust the audio tracks of a video.

With it, you can easily add, replace or delete an audio track of any video. To add multiple audio tracks, just make sure the output format is set to MKV, MP4 or MOV. Similarly, you can also modify the subtitle tracks as needed.

The program can handle the process losslessly without re-encoding the video, if the video settings are kept as the original. Moreover, it supports hardware acceleration that can boost the conversion speed by up to 30x.

Next, follow the instructions below to try to add multiple audio tracks to your video.

Click the download button here to download HD Video Converter Factory Pro on your PC. Then finish the installation.

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Download for Free

* The trial version lets you process five minutes of each file for free. You can test the software before getting a full version.

Launch the software and enter the Converter module. Click + Add Files to add a video to the program. You can also drag and drop the file into the interface.

Expand the format page on the right and select MKV, MP4, or MOV under the Video tab.

💡 It’s recommended to select MKV for versatility, MP4 for compatibility, or MOV for Apple-friendly use.

Click the button next to the Audio Track option to add as many audio files as you want. Then unfold the Audio Track and select all the tracks.

To ensure that all your audio tracks can be played back normally, you can open Parameter settings and change the audio encoder to AAC, a universal audio format that can be played on various devices and software.

Click the ▼ button at the bottom to set an output folder. Finally, click Run to start the process.

💡 If the video settings are unchanged, a lightning icon ⚡ will appear in the middle of the task, indicating that the process will be instant and lossless.

💡 If your computer comes with a compatible graphics card (Intel QSV or Nvidia NVENC), the GPU acceleration will be automatically triggered to speed up the process. The performance depends on your hardware model.

When adding multiple audio to a video file, there are a few things to pay attention to if you want to obtain a perfect result:

To avoid issues with out-of-sync audio, you need to first align the audio tracks with the video, making sure they are the same length and that the audio matches what the character is saying. You can easily adjust these using an audio editing program like Audacity.

You can name each audio track by language (e.g., English, Spanish) so that you and your viewers can easily distinguish them.

Not every audio format can be played on all devices. For universal playback, it’s recommended to set the audio track as AAC format.

Check the output file for any unsatisfactory parts and modify them again.

Adding multiple audio tracks to a video is a valuable skill to master. With the software introduced above, you can now easily add audio tracks to MP4 or add audio tracks to MKV according to your needs.

By the way, the same software also lets you compress large videos, edit video and audio files, download online movies and music, and achieve more. You can download the software and explore more features:

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Download for Free

That’s all I want to share in this article, hope it’s useful to you. Thanks for reading. Have a nice day!

You can add multiple audio tracks to a video with the help of WonderFox HD Video Converter Factory Pro:

• Step 1: Add a video to the program.
• Step 2: Select MKV or MP4 as the output format.
• Step 3: Add multiple audio tracks and make sure all tracks are selected.
• Step 4: Export the final file.

Unfortunately, HD Video Converter Factory Pro does not allow you to mix all audio tracks into one. You may need video editing software like Premiere Pro to do that.

MKV, MP4, and MOV formats support multiple audio tracks.

Yes. HD Video Converter Factory Pro lets you add multiple audio tracks without converting the video as long as the output video settings are the same as the original.