MKV2MP4 is a free app to convert video files in the MKV container format to more compatible MP4 video files.

MKV2MP4 can convert files so fast because it doesn't re-encode the video data but just copies it into the more compatible MP4 container format. You can choose in the preferences whether you want highest speed for the audio conversion or the highest compatibility.

Because MKV2MP4 just copies the video data into the new container format there is absolutely no loss of quality, the converted files are pixel-perfect copies. Full-HD videos are fully supported.

MKV2MP4 can convert hundreds of files at once with it easy-to-use queue system and features convenience options for automatically adding many files without any further work.

MKV2MP4 features 3 modes of conversion. You can choose perfect compatibility for files that will play on every MP4 compatible player. Or you can choose highest speed and the files will still play on most player (notably except iOS devices). Additionally there is a custom mode where you can arbitrarily define how to handle audio conversion. There are also options for automatically adding files to the queue and removing them afterwards for batch handling. Most subtitles are fully supported as well (see F.A.Q.).

If your file contains a surround sound track you can use MKV2MP4 to generate files that play with perfect 5.1 surround sound on your supporting target device. MKV2MP4 even supports generation of files that play with surround on the AppleTV, which has special requirements.

- Mac OS X 10.13 "Yosemite" or later

- MKV2MP4 does not do video downscaling, it is not suited for converting HD videos for playback on (old) devices that don't support HD resolutions (like the iPhone 3G(S)).
- Some files (that contain too many ref-frames, 10-bit video or are larger than FullHD) will not play on some devices like the PS3 that don't support these features.
- MKV2MP4 does not preserve all audio tracks. You can select one audio track to convert and optionally include a surround version of the same language (if available).

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What’s New

Version 1.5.1

Bug fix

Ratings and Reviews

5.0 out of 5
17 Ratings

17 Ratings

RGrogan ,

Great Application & Developer is very responsive

This is a great application. It’s functionality is straight forward… it converts (remux’s) MKV files to M4v/M4v files and it does so quickly. It has additional functionality to transcode the audio into other formats to make the audio source compatible with a larger number of devices.

When I have had errors and sent the error file to the developer, he was very quick to respond and let me know what the problem was (usually the source file).

I also made a few suggestions including adding functionality to concurrently process multiple video files and the use of a “watched folder”. These were just implemented in version 1.4.5.

i0n st0rm ,

Best App I found all year

As the year 2017 closes, this has to be the best application I have found all year. Only wish it had a few tweaks so that it converts my Godzilla movies better. It strips all the languages out but English. Sometimes I like to watch them in Japanese with English subtitles… much more fun to hear it with the actor’s voices.

This applciation has saved me so much time. Much faster than handbrake.

Bejeweled Addict #1 ,

Lightning Fast Convertor!

I love everything about this app!
Dark mode! Minimal interface!
Drag and Drop! Batch Converting!
Lightnig Speed!
Great Quality MP4 output!
Convert a season of shows in less than 15 minutes!
No Joke! (13 [42min] mkv = 12 minutes, 1080p aac)

There is nothing to do after you set it up the first time! Really! Enter your files and click each one's button and watch them go! You can even set it up to trash your mkv after convert!

This is the best low cost movie convertor on the mac hands down!
I, and my Library, Thank you!

App Privacy

The developer, CoreCode Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


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    With Family Sharing set up, up to six family members can use this app.

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