How to Merge Audio and Video Files Together without Quality Loss?

Sometimes people may want to merge audio and video files for different purposes. But there are so many video audio mergers on the Web that you may not be clear about which one to choose. So this post is here to provide several reliable video and audio combiners to help you merge audio and video files on Windows and Mac.
HD Video Converter Factory Pro can help Windows users join video and audio files with high-quality preserved and no watermark left. Get it here now and follow the instructions below to start the audio and video merging task.

Carina Carina | Updated on July 21, 2023

How to Merge Audio and Video on Windows?

How to Combine a Video and Audio File on Mac?

How to Join Video and Audio Files Online?

Part 1. How to Merge Audio and Video on Windows?

As stated before, WonderFox HD Video Converter Factory Pro is highly recommended for Windows users who want to combine audio and video files. It is an all-in-one video & audio processing program that is capable of editing videos. You can use this software to merge audio and video files at a fast speed without losing quality. It allows you to combine video and audio together in only four steps with its self-explanatory interface and intuitive operations. You can also take this video editor to remove audio tracks, cut and split video, merge multiple files together, and so forth in an effortless way.

Just downloaddownload it here now, and let’s get started with the audio and video merging task.

Fast & Easy Video Audio Merger

HD Video Converter Factory Pro offers an easier way to combine a video and audio file at 50X speed. High quality, feature-packed, no watermark, and easy to get started. Just download this efficient audio and video combiner and start the video and audio merging process now!

Detailed Steps about How to Merge Video and Audio Files

Step 1. Import the Video Files

Launch HD Video Converter Factory Pro on your PC and enter its “Converter” module. Click “+ Add Files” or “Add Video Folder” to import the videos that you want to merge with audio. You can also directly drag and drop the source files into the workspace. (HD Video Converter Factory Pro enables you to import multiple video files and export the merged video-audio filed simultaneously with its batch processing mode.)

Import the Video File

Step 2. Select an Output Format

HD Video Converter also enables you to change video formats so that you can convert your uncommon video formats to MP4, MKV, AVI, etc. for better compatibility. You can just click the format image on the right side and choose one video format under the "Video" tab. (You can also select a device-compatible format.)

Select Output Video Format

Step 3. Combine Video and Audio Files

Press the second “+” icon below each video task to add audio files from the local drive: locate the audio file folder, select the audio file you want to add, and then click “Open”. If your imported video contains a soundtrack, this will automatically replace the original audio track with the added one.

Tips: In Step 2, if you set the output format as MP4, MOV, or MKV, which supports multiple audio tracks in one video, then you can add multiple audio files to the video. Don’t forget to check the box to select your desired soundtracks.

How to Merge Audio and Video in Windows 10

Step 4. Export Final Files

After joining audio tracks to each video, you can then press the down-arrow icon at the bottom of the interface to specify an output path. Press Run to combine audio and video files. With the support of hardware acceleration, the video and audio merging process can be completed at a lightning-fast speed.

Export Final Files

More of HD Video Converter

Batch convert video to 500+ formats and devices;
Reduce video & audio file size with high-quality preserved;
Edit audio/video files by cutting, rotating, cropping, etc.
Make animated GIFs, ringtones, split screens...
Record screen and audio in high quality...

Part 2. How to Combine a Video and Audio File on Mac?

To combine video and audio files on Mac, iMovie is the best software that you can’t miss. It is the default video editing program that is pre-installed on Apple devices, including iPhones, iPads, and Macs. It is well-designed with many basic video editing features like cutting, cropping, and rotating video clips, adding video transitions, boosting audio volume, and, of course, merging audio and video. More than that, it also provides many cool filters, movie templates, special effects, and so on to make your video look professional.

Without further ado, let’s see how to merge video and audio in iMovie.

Step 1. Launch iMovie on your Mac. Create a new project and add a video to it. Then drag the video to the timeline for editing.
Step 2. Switch to the Audio tab and select the wanted audio source from iTunes, Sound Effects, and GarageBand. Then drag the selected one to the timeline.
Step 3. Edit the audio and video clips if needed.
Step 4. After finishing the video and audio combining and other editing processes, you can go to “Share” > “File” to export the video. iMovie also enables you to quickly upload the edited video to YouTube.

How to Merge Audio and Video in iMovie

Part 3. How to Join Video and Audio Files Online?

Apart from using desktop video editing apps to merge audio and video files, some users may wonder how to combine a video and audio file online, as there are many online video editors now. So this part also shows you how to merge audio and video online with a handy online video editor— It is one of the most popular online video editors that can do many edits to your video, including combining video and audio together. Just let’s see how to combine audio and video online with

Step 1. Visit the official website of;
Step 2. Click “Create your first video” from the initial interface to enter the video editing workspace;
Step 3. Press “Upload a File” to import the video from your local drive, or you can also choose to add a video from Dropbox and a link.
Step 4. Hit the Audio icon at the left side of the interface to add audio to the video. You can right-click the video on the timeline and select “Audio” to mute the original audio.
Step 5. Click “Export” > “Export Video” and wait for the video audio merging process. You can then preview the video and click the download icon at the right side of the interface or share it to Facebook, Twitter, etc.

How to Merge Audio and Video Online

Note: With, you can merge video and audio clips on any operating system without downloading software. But there will be a watermark on the output video, and the video quality is limited to standard unless you upgrade to the pro version.


With the three ways provided, you can now combine video and audio files on Windows, Mac, and online without hassle. Just choose one according to your actual needs and start merging audio and video now. Hope this post can help you with your problem. Thanks for reading. Wish you have a nice day!

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