Aimersoft Video Converter Ultimate

Best Video Converter to Convert MP4 to MKV

  • Convert MP4 to MKV format easily at 90X faster speed.
  • Support more than 500 formats for conversion, including MP4, MKV, WMV, MOV, AVI, etc.
  • Supports batch MP4 to MKV conversion.
  • Edit video before converting to other format. You can trim, merge, add subtilte and more.
  • Download videos from 1000+ online sites like YouTube.
  • More: burn DVD/CD, record screen, compress video/audio, etc.
Aimersoft Video Converter Ultimate

MP4 to MKV: How to Convert MP4 to MKV on Mac/Windows

Jun 25,2019 • Filed to: Convert MP4 • Proven solutions

We can literally conclude that much is known about MP4 than fellow MKV and that there is a notion that MP4 is superior to any other video format in various ways including MKV. However, we can confidently detest about that theory by showing you what MKV is capable of and hence the need to convert MP4 to MKV.

MKV files are also regarded as Matroska Video files are open source multimedia container. MKV file does not act as a compression format for audio or video but different files with different codec can be merged into an MKV video container. This is a noble property which cannot find from any other video containers. Also, MKV does not use the separate .srt file to embed subtitles instead they embed in the audio files, and you can effectively turn off the soft subtitles in the MKV movie. Furthermore, in a single MKV file, there is no limit of the number of images, subtitles, and video and audio you can store. Surely, is this not substantive reasons to start looking for free MP4 to MKV converter?

Part 1. Best Way to Convert MP4 to MKV without Losing Quality

Aimersoft Video Converter Ultimate lets you convert MP4 to MKV and other popular files at a 90X fast speed. This program has a vast number of output formats for DVD; DVD disc, DVD folder, ISO files, and VOB files, Audio; MP3, M4A, AC3, AAC, WMA, and WAV, video; MP4, MOV, QT, WMV, MTS, and F4V. Coupled with this wide range of formats is a simple interface, customizable output formats, batch processing, and more. Perhaps, Aimersoft Video Converter Ultimate is worthy of the best free MP4 to MKV video converter. See the main features of Aimersoft Video Converter Ultimate below:

Aimersoft Video Converter Ultimate

Aimersoft Video Converter Ultimate

  • Batch convert MP4 to MKV or other 500+ format, including MOV, AVI, WMV, TS, MPEG, etc.
  • Enhance and customize MP4 videos before converting to MKV with the full packed video editing tools including video crop, trim, add text/image watermark, adjust video brightness, contrast, and saturation.
  • Download and convert online videos from 1000+ sites including Dailymotion, YouTube, VEVO, Vimeo, and Facebook.
  • Extract audio from video easily in MP3, WAV, OGG, FLAC or other formats.
  • Burn DVD with the help of free templates.
  • More features: compress video, record screen, make GIF image, convert image, etc.

How to Convert MP4 to MKV with Aimersoft Video Converter Ultimate

01 Import MP4 file(s)

First, download Aimersoft Video Converter Ultimate and install it on your Mac or PC then launch it. Tap the + Add Files button and a File Explorer appears. It is on this window that you navigate up to the MP4 storage and select those you intend to convert to MKV. After selecting all the videos click Open. Alternatively, you can use the drag-and-drop method to add the target MP4 files.

add video

02 Select MKV as Output Format

If you have selected several MP4 videos, you can perform batch conversion. Perform this workaround by clicking Convert all files to followed by clicking Video. Select MKV from the list of output files and on the right of the output file formats choose an appropriate resolution.

add video

03 Start Converting MP4 to MKV

After you’ve set everything, click the Convert All button to convert all the videos at once. Also, you can convert a single MP4 to AVI by clicking Convert button on the right of the video. the converted videos are on the Converted Window. Afte a few seconds, you can see your MP4 files have been converted to MKV format.

MP4 to MKV converter

Part 2. Free MP4 to MKV Converter Online Introduction

Online MP4 to MKV video Converter tools are perfect and handy utilities when you are in a hurry of video conversion. They have the same abilities to Desktop versions as seen in the following online suites.

1. KeepVid Video Converter

This free MP4 to MKV converter has been in the media conversion market for a while. It has a couple of useful features and along with a good number of output formats you can convert your video to. For you to convert MP4 to MKV you just need to import MP4 and choose MKV as the output format and initiate the conversion process.


  • Has a high conversion speed.
  • Automatically download the converted files into your computer.


  • Has a file limit of 100 MB.
  • Internet dependence.

keepvid online mp4 to mkv converter

2. Zamzar Video Converter

This is also a well-known video converter like the one mentioned above. Its interface and functionality are directly designed to just convert MP4 to MKV online and other video formats.


  • User-friendly interface
  • Very easy to use


  • There are cases of lower video quality after conversion.

zamzar online mp4 to mkv converter

3. Apowersoft

Apowersoft is among the few online MP4 to MKV video converter which has no restriction to file size to be uploaded. Moreover, it is a powerful utility akin to any professional converter as its name suggests.


  • Features an intuitive interface which is very easy to use.


  • You may experience very slow video conversion with large video files.
  • Has limitas to video size and length.


4. Convert.Files

This is an online utility which newbie individual is glad of due to its simplicity. It is utterly easy to use and absolutely user-friendly. It lets you convert MP4 to MKV without prompting for a third-party software or plug-in installation.


  • Features a simplest video conversion process compared to other online video converters.


  • You may experience a delay of converted files reaching download folder.

convert files

5. Clip Converter

Clip Converter is a fully Web-based free Mp4 to MKV Converter which lets download video via URL and converts to your best choice format. It can extract audio from your video does so in without interfering with the file in any kind.


  • Provides a user manual on the interface.


  • It offers a maximum limit of the file size to be uploaded which is 100MB

clipconverter online mp4 to mkv converter

Part 3. MKV vs MP4

At this point, you might have noticed how good MKV file is and therefore it is fit contrast it to MP4.

Both MKV and MP4 are multimedia container formats and MKV supports FLAC audios and ASS/SSA but MP4 does not. When it comes to compatibility, MP4 can be played with all available video players while MKV can only be played with VLC and any other rarely used media players.

In summary, we can conclude that MKV files boast being open source and high-quality videos while MP4 brags being advantageously compatible with all video editing software.

Adam Cash

staff Editor

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