How to convert MKV to MP4 on a Mac
Simple, fast MKV conversion: Movavi Video Converter
Free trial available
Supports conversion between all popular formats
Beginner-friendly user interface
Premium version required to access all features
To convert MKV for free: VLC
Totally free to use
You can use VLC as a media player to watch your videos
UI can be a little confusing
To convert MKV files online: Online Video Converter
Works online in your browser
No downloads or installations needed
Very easy to use with a simple UI
Doesn't work with batch conversion
Max file size
How to use Movavi's MKV-to-MP4 converter on a Mac
What is the SuperSpeed mode?
Step 1. Download the installation file for Movavi's transcoder
Download the installation file for Movavi Video Converter to your hard drive, open it, and install the program.
Step 2. Open files for conversion
Locate the files you want to convert on your device by clicking Add Media in the upper left corner, selecting Add Video, and choosing the video or videos that you want to convert. If you want to use SuperSpeed Conversion, your MKV files will need to be encoded with H.264 or MPEG-4 codec. Without these file formats, you cannot use SuperSpeed mode for your video conversion.
Step 3. Select the output format
Open the Video tab and find the icon associated with the format you want to use. Since you want to convert MKV to MP4 on a Mac, you will want to select the MP4 icon. You will then see a list of MP4 formats. Choose the one that best meets your needs. The preset with the SuperSpeed icon will convert fastest, allowing you to view your video more quickly. As you convert your MKV to MP4 on your Mac, however, make sure that you choose the format that best fits your needs.
Step 4. Start the conversion
By default, all converted files are stored in the Movavi Library folder. If you want to use a different folder, click Save to and locate the desired folder on your computer. Click the Convert button to start the process. Since the Movavi app supports one of the fastest video processing technologies, your files will be converted in no time.
How to convert MKV to MP4 on a Mac for free using VLC
Step 1. Upload your file to the app
Select File, then choose Convert / Stream. Click the Open Media button to upload your file. Choose the MKV file that you want to convert to MP4 format. You can also drag and drop files onto the list, which can prove more convenient if you have the file list open in another location.
Step 2. Select the profile
In the Choose Profile section, select Video – H.264 + MP3 (MP4). Click the Customize button if you want to edit the selected profile.
Step 3. Customize your settings (optional)
If you’ve decided to edit the profile, go through your tabs to make sure that you have chosen the right settings for your file conversion. This includes:
On the Encapsulation tab, make sure you have selected MP4/MOV.
Check the Video codec tab, then click both Video and Keep original video track.
Visit the Audio codec tab and make sure that both Audio and Keep original audio track are selected.
Your settings can make a big difference in your final file, so make sure you've gone through the settings to ensure that it will convert the way you want it to. If you notice any settings that aren't quite right, fixing them now will save you from having to go back and do it again. Once you've checked your settings to ensure that they fit your needs, click the Apply button.
Step 4. Start the conversion
You likely have a specific destination where you want to save your video file. Select it in the Choose Destination section by clicking Save as File. Then click Browse, enter the file name, select your destination, and click the Save button. To start converting your MKV files, click Save.
Once you start converting, you can observe your progress by watching the progress bar in the main window. This progress bar will let you know how long you have until your video conversion is complete and you can watch the video in your desired format. You can then visit your destination file to watch the video. Now you know how to convert MKV to MP4 on your Mac using VLC.
Pros and cons of using VLC
Here are the pros of using VLC as a free MKV-to-MP4 converter on your Mac:
VLC is available for free
There are no ads in this free MKV converter for Mac
After the conversion, you can use this player to watch your videos
The drawbacks of this method are the following:
The conversion process is a little confusing
Some users may find the interface design outdated
How to use an online MKV converter on your Mac
Step 1. Go to the Online Video Converter website
Step 2. Upload your MKV file
To upload your video, click the Add Your Media button and locate your MKV file.
Step 3. Choose your destination file type
You will need to select MP4 as your intended end file type for the conversion. To do this, just open the Convert to drop-down menu and find MP4 from the list.
Step 4. Convert the video
Click the Convert button to start the conversion process. Once you have converted your MKV file to MP4, the file will be downloaded automatically. Again, this may take some time, depending on the length of the file.
Pros and cons of using Online Video Converter
There are the pros of converting your files using this online tool:
You don’t have to download and install software
A simple interface makes it very easy to use
The drawbacks of this conversion method are the following:
It doesn’t support batch conversion
The file size is limited
The editing features aren’t available
MP4 vs. MKV comparison
H.264, H.265, MPEG-2, MPEG-4, H.263, VC-1, Dirac, others
H.264, H.265, MPEG-4, MJPEG, Theora, VP9, DV, others
AAC, MP3, AC-3, Apple Lossless, ALS, SLS, others
AAC, AC3, MP3, ALAC, Vorbis
Device and OS compatibility
Compatible with almost all devices and operating systems
Some TVs, media players, and mobile devices. Windows PC (with a special codec installed), no native support in macOS
Frequently asked questions
What is an MKV file?
The MKV file format is a common multimedia file. It contains video and audio content in one easy file, which makes it easier for others to view. The MKV file type supports high-quality H.264 video. MKV files are very large file formats, which can make them unwieldy. While they offer an excellent viewing experience, they may be difficult to watch in some formats, including on mobile devices and Apple computers.
MKV files are very large-format files. If you're trying to convert an MKV file, it probably hasn't taken you long to figure out that the format is very large – especially if you've attempted to perform that conversion online. The codecs used for the content inside the MKV file take up a great deal of space. In short, these large files are the price you pay for high-quality video playback. It's important to take that into consideration, both as you're deciding what format you want to use for your videos and as you're evaluating what steps you need to take when converting your MKV videos.
What is the MKV format used for?
MKV (which stands for Matroska Video) is a universal format designed as a new standard for high-quality video compression. MKV can combine HD video with multiple audio tracks and subtitle tracks – that’s why it is a good choice for storing movies, TV shows, and concerts.
Can I play MKV files on a Mac?
Unfortunately, Mac users may encounter difficulties when viewing MKV files, and iPhones do not support MKV at all. To open MKV files on Apple hardware, you need to convert MKV to a more common format, for example, MP4. The best way to do this is to use a dedicated conversion program. Movavi Video Converter can help you transform your files fast, thanks to its SuperSpeed mode.
Can MP4 files be played on a Mac?
Although Mac’s default player supports the MP4 video format natively, it can only play files compressed with MPEG-4, MPEG-2, and H.264 codecs. If you want to play an MP4 file encoded with a different codec, you’ll need to install a player that supports that codec, or convert the video clip to another format, like MOV.
Is MKV better than MP4?
Which format is better – MKV or MP4? Both MKV and MP4 are popular video formats that support H.264 video. However, Apple smartphones and Mac computers don’t support MKV natively, while MP4 is a default format for iPhone, iPad, and many other devices. So, if you want to transfer videos to your iPhone, it’s better to choose MP4, but if your device supports MKV, you can keep your files in this format.
Will converting MKV to MP4 reduce the file size?
Yes, it will help to make the file smaller. MKV files are usually larger than MP4s because of some attributes like multiple tracks and subtitles. A smaller file size means quicker downloads as well as savings in storage space. So if you need your MKV video to be smaller, try converting it to the MP4 file format. If you’re worried about quality loss, use the Movavi MKV-to-MP4 converter for Mac – it enables you to change the format of your videos while retaining good quality.
How can I convert MKV to MP4 on a Mac with Handbrake?
Handbrake is an open-source MKV-to-MP4 converter software with a free download. You can download and install it for free from the official site. Open the program and add your files. Then adjust the settings however you like before clicking the Start button to begin re-encoding and conversion.
How can I convert MKV to MP4 for free?
You can use various programs and tools to convert MKV to MP4 for free, such as Movavi's Online Video Converter or VLC Media Player.
How do you play MKV files on an iPhone?
iPhone doesn't support MKV natively, but you can use third-party media player apps that will either play or convert MKV files. The best option is to usually convert MKV files using a desktop or an online tool.
How can I import MKV to iMovie?
You can't import MKV files to iMovie without converting them first. You'll need to use a converter tool or program like Movavi Video Converter to convert your MKV files to a format supported by iMovie, like MP4.
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