MP4 to MKV Converter

Select files for conversion or just drag and drop them to the upload area

How to convert MP4 files to MKV online?

Step 1.

Upload MP4-file

Click "Choose File" button to select a mp4 file on your computer. MP4 file size can be up to 50 Mb.
Step 2.

Convert MP4 to MKV

Click "Convert" button to start conversion.
Step 3.

Download your MKV

Let the file convert and you can download your MKV file right afterwards.

Information about MP4 and MKV file formats

Name MP4 MKV
Full name MP4 - MPEG-4 Part 14 MKV - Matroska
File extension .mp4, .m4a, .m4p, .m4b, .m4r, .m4v .mkv, .mk3d, .mka, .mks
MIME type video/mp4 video/x-matroska, audio/x-matroska
Developed by International Organization for Standardization www.matroska.org
Type of format Media container Container format
Description MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.
Technical details Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org). Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF), but is entirely open in specification, with implementations consisting mostly of open source software.
Associated programs Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player VLC Media Player
Wiki https://en.wikipedia.org/wiki/MPEG-4_Part_14 https://en.wikipedia.org/wiki/Matroska