How to choose an MKV-to-MP4 converter?

July 15, 2019
8 min

Just follow these simple steps:

  1. DownloadDownload and run Movavi Video Converter
  2. Add your files to the app
  3. Select the desired format
  4. Launch the conversion

By clicking the button, you’re downloading the free version of Movavi Video Converter.

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How to Do MKV-to-MP4 Conversion

In this article, you will learn everything you need about MKV-to-MP4 conversion, the formats themselves, and solutions to commonplace problems related to MKV files.

Can’t open a media file?

Most likely, your TV, tablet, or smartphone does not support the file type. Try to update your device firmware or just convert the file to a more popular format.

Is your video choppy or jerky?

The file is probably a little too heavy. You can make it smaller without any visible loss of quality.

No sound?

The audio codec in the file must be incorrect. Just change the audio codec using an MKV-to-MP4 converter.

Not enough space for a movie?

You can easily reduce the file size from 8 GB to 2 GB and have four times more movies on your smartphone or flash drive. You won’t see any difference in quality.

How to Convert MKV to MP4 without Losing Quality in Movavi Video Converter

With Movavi Video Converter, you can transfer MKV to MP4 without losing quality using the revolutionary SuperSpeed mode. The program supports batch processing that makes conversion even faster.

You can also use this smart software as an MP4-to-MKV converter if you need to do the reverse – convert MP4 to MKV. Movavi Video Converter provides one of the easiest ways to do fast conversion between more than 180 multimedia formats. So once you download the Movavi MKV-to-MP4 Converter, you can forget about format compatibility limits forever.

    1. Install the Program on Your Windows PC or Mac

    Download the installation file for Movavi Video Converter to your hard drive, open it when the download is complete, and install the program.

    2. Open Files for Conversion

    First, add the files you want to encode into a different format: click Add Media in the upper-left corner and select Add Video. Thanks to support for batch conversion, you can quickly change the format of multiple files from your video collection at once.

    3. Select the Output Format

    Open the Video tab to access the list of supported formats and choose the required format – MP4 or MKV – depending on your goals. Each format has a list of ready-made presets, offering a choice of resolutions. Select the one that best meets your needs. You can specify a custom resolution and other video parameters by clicking the Cogwheel icon.

    4. Start Converting MKV to MP4 or Vice Versa

    By default, all output files are stored in the Movavi Library folder. If you want to use a different folder, click the Save to button and locate the required folder on your computer. To start processing your media files, just click the Convert button. Since the Movavi software supports the latest video-processing technologies, conversion takes almost no time. No matter whether you switch your MKV files to MP4 or MP4 to MKV, the results will always be perfect!

Movavi Video Converter

  • Convert video, audio, DVDs, and image files
  • Enjoy lightning-fast conversion without quality loss
  • Improve quality, adjust sound, trim and join files before converting
  • Save video and audio clips for easy mobile access

How to Convert MKV to MP4 Online

Wondering how to convert your videos to MP4 online? Services like offer you this option.

    1. Go to the Website

    First, click the link below to visit the online converter page.

    Visit the service website

    2. Add Your MKV File

    Select the MKV video you want to convert by clicking Add Your Media. You can also drag and drop the video onto the page.

    Note that the service has a couple of restrictions – the size of files that can be uploaded is limited, and you can only convert one file at a time.

    3. Launch the Conversion

    Hit Convert and wait for the conversion process to end. When the file has been converted, it will be automatically downloaded to your computer. It’s that easy!

How to Use VLC to Convert MKV to MP4 for Free

As an alternative, you can use a free MKV-to-MP4 converter like the VLC media player. It doesn’t offer fast conversion of large files, but as a freeware product it might suffice.

    1. Install the Free Video Converter

    Run the downloaded application file and follow the installation instructions.

    2. Add Your Files

    Go to Media > Convert / Save in the top left-hand corner of the interface. Add the MKV files to the program by using the Add button and then click Convert / Save.

    3. Select the Desired Format

    In a new window, change the target format to MP4 next to the Profile field.

    4. Select the Output Folder

    Select the desired destination folder and enter the file name. Click Start to launch the conversion.

MKV vs. MP4 Comparison

MKV (Matroska Video) is a free container format that lets you combine multiple audio, video, and subtitle streams – which is why it became so popular for movie storage. One file can keep audio tracks in all languages and many subtitle streams that can be switched on the fly. However, MKV files can have different properties, and the fact that your TV or smartphone is able to play one MKV file doesn’t mean that there won’t be any issues with another. Therefore, many users prefer converting movies to a single format (usually MP4) that will definitely be opened by their devices.

MP4 is currently the most popular container format for storing media content: video, audio, subtitles, and even images (for example, images of movie intros). Even though there is an MPEG-4 video codec, files with an MP4 extension can contain videos encoded by other codecs – for example, H.264 or H.265. Due to a good ratio of quality and size, this format has gained immense popularity and is supported by the largest number of devices and platforms, including iOS and Android.

Comparison Parameter MKVMP4
File extension .mkv.mp4
Video-encoding formatsH.264, H.265, MPEG-4, MJPEG, Theora, VP9, DV, othersH.264, H.265, MPEG-2, MPEG-4, H.263, VC-1, Dirac, others
Audio-encoding formatsAAC, AC3, MP3, ALAC, VorbisAAC, MP3, AC-3, Apple Lossless, ALS, SLS, others
Device and OS compatibilitySome TVs, media players, and mobile devices. Windows PC (with a special codec installed), no native support in macOSCompatible with almost all devices and operating systems

So, despite the fact that MKV is quite a popular format, it’s still not supported by many platforms. That’s why you might consider converting it to MP4.

Frequently Asked Questions

You can use desktop software like the Mac version of Movavi Video Converter. Or just convert your files online via services like There is also a free alternative for your desktop – the VLC player.

Just download a media player that supports this format – the VLC player will do.

It’s a file in the MKV format – a free, open-source file type that can hold large amounts of video, audio, image, and subtitle tracks. The term “Matroska” actually derives from the Russian “Matryoshka” – the name for the famous nesting dolls.

You can learn that from our guide on how to convert video to iTunes.

Use an app like Movavi Video Converter – it lets you convert entire batches of video files in a matter of minutes.