How to Convert AVI to MKV for Higher Compatibility & Extra Features

AVI and MKV are both popular video formats, but they work in different ways. AVI is older and widely supported, while MKV is newer and can hold more features like multiple audio tracks and subtitles. Many people choose MKV because it is more flexible. In this guide, you will see easy ways to convert AVI to MKV. Keep reading to learn the steps and enjoy a format that can do more.

Quick Answer: Best AVI to MKV Solutions

• For Windows/Mac: AVAide MKV Converter (Free)
• For Tech Users: FFmpeg (Command Line)
• Online Option: CloudConvert (No Install)

Method 1: AVAide MKV Converter

Supported Operating Systems: Windows & Mac

If you want to change AVI to MKV without hassle, AVAide MKV Converter is the best program to use. It can manage many files at once, so you can save time with bulk processing. You can set the resolution, frame rate, and other output settings to match your needs before converting. Besides that, it lets you edit videos by cropping, trimming, rotating, and more. The interface is easy to navigate, making it perfect for first-time users.

Step 1Start by downloading and installing AVAide MKV Converter on your desktop.

Step 2Once installed, open the program and click Add Files to upload your AVI files.

Step 3Click on the Format drop-down menu and choose MKV under the Video option.

Step 4In case you want to change something in the output settings, just open the Custom Profile button. Here, you can fine-tune the Video Quality, Encoder, Resolution, Frame Rate, Bitrate, etc.

Step 5Are you finished? If yes, click the Convert All button on the lower-right to start the AVI to MKV conversion. Once done, AVAide MKV Converter will automatically open the folder where your output is stored.

Method 2: VLC Media Player

Supported Operating Systems: Windows, Mac & Linux

This popular player is known for handling almost any video format, but it can also change files. VLC lets you change AVI to MKV without adding an extra program. It works with many formats, so you can convert to or from different file types. It is a fast and free approach to get the format you need.

Step 1Open VLC and go to the Media menu at the top left, then choose Convert/Save.

Step 2Click the Add button and pick the AVI file you want to change.

Step 3Under output type, pick MKV, then press Convert. VLC will now start turning your AVI into an MKV file.

Method 3: HandBrake

Supported Operating Systems: Windows, Mac & Linux

Some free tools feel basic, but this one is not. HandBrake is open-source and gets better with updates from its active community. You can convert AVI to MKV easily or fine-tune advanced settings for more control. HandBrake is simple for new users. It also has extra settings for those who want more control.

Step 1Open HandBrake and click Source in the top left, then choose Open File.

Step 2Pick the AVI file you want to convert.

Step 3Under the Destination section, click Browse to choose where you want the new file to save.

Step 4Once ready, click Start, and HandBrake will now change your AVI into an MKV file.

Method 4: FFmpeg

Supported Operating Systems: Windows, Mac & Linux

If you want a program that works like a precision machine, this is it. You can convert AVI to MKV using FFmpeg and do other video tasks. It is command-based, so you must type instructions. It may be tough for beginners, but those who know the commands can do almost anything with their clips.

Step 1First, install FFmpeg on your computer and make sure ffmpeg.exe is ready to run.

Step 2Press the Windows key, search for CMD, and open the command prompt.

Step 3Find where your AVI file is saved. In the command prompt, type:

ffmpeg -i input.avi -vn -ar 44100 -ac 2 -b:a 192k output.mkv

Then, press Enter to start the conversion.

Method 5: AVAide Free AVI Converter Online

Supported Operating System: Any (Web-based)

This free AVI to MKV converter is easy to use. AVAide Free AVI Converter Online supports many formats, including MKV, and can handle multiple files at once. The speed is up to 50× faster, and there is no watermark in the output, which is nice. Even if you know little about computers, you can change AVI to MKV in just a few clicks without losing clarity.

Step 1Go to AVAide Free AVI Converter Online's primary website.

Step 2Click the ADD YOUR FILES button to load your AVI files.

Step 3Head to the bottom and put a bullet beside MKV.

Step 4Once done, click Convert to start the AVI to MKV conversion.

Method 6: CloudConvert

Supported Operating System: Any (Web-based)

CloudConvert is another free online AVI to MKV converter. Besides AVI and MKV, it can also help you convert AVI to MP4, MOV, WMV, etc. You can tweak settings if you want, but the defaults work fine. Free users get twenty-five conversions a day, which is enough for casual use; for heavier use, paid options are available.

Step 1Go to the CloudConvert - AVI to MKV Converter's official website.

Step 2Click Select File to upload your AVI file. Once loaded, MKV is already set as the output format under Convert to.

Step 3You can change extra settings if you want, but the default ones work fine for most people.

Step 4Hit Convert and please wait while your AVI file turns into MKV. Once it is done, download your new MKV file.

Method 7: MKVToolNix

Supported Operating Systems: Windows, Mac & Linux

Not all conversions need re-encoding. MKVToolNix can change AVI into MKV by remuxing, which means it keeps the video and audio as they are. It saves time and keeps the clarity the same. It is perfect if you only need to change the container format. But if you want to change codecs, you will need another program.

Step 1Run MKVToolNix and go to the Multiplexer tool.

Step 2Drag and drop your AVI file into the Source Files area.

Step 3Pick where you want to save the MKV file by setting the destination filename.

Step 4Click Start multiplexing, and please wait until the conversion finishes.

Method 8: Adobe Media Encoder

Supported Operating Systems: Windows & Mac

Part of Adobe's Creative Suite, this program is built for professionals. Adobe Media Encoder can convert AVI to MKV with control over format, codec, and resolution. You can pick a preset or fine-tune everything to fit your needs. It is more advanced than simple converters but gives you full control over the output.

Step 1Launch Adobe Media Encoder and add your AVI file by clicking File > Add Source or pressing the Add button.

Step 2In the Preset Browser, pick an MKV preset that matches your needs. You can also make your own custom settings.

Step 3Drag the preset onto your AVI file in the queue.

Step 4If needed, click the output file name to change where it will save.

Step 5Press Start Queue to begin converting your AVI to MKV.

By Bryan Simmonds on Sep 05, 2025