What is MKV?

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 inside a single file.It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows. Matroska is similar in concept to other containers like AVI, MP4 or ASF, but is entirely open in specification, with implementations consisting mostly of open source software. Matroska file types are .MKV for video (with subtitles and audio), .MK3D for stereoscopic video, .MKA for audio-only files and .MKS for subtitles only.

How to convert MKV to MP4 using Video Converter

Encode HD Video (inc. AVCHD, TS, TOD, AVI HD, M2TS, etc.), AVI, MP4, WMV, Blu-ray, 3GP, DVD, VOB, MPEG, H.263/H.264 codecs, DVR-MS, MKV, FLV, etc. with AVS Video Converter or Mac Video Converter.

Free download Video Converter (Windows User | Mac User).

Step 1: Load or drag MKV videos to Video Converter.

Step 2: Click image button at right of each video item, and choose MP4 as output format from Format list. You are also allowed to trim, crop, and add effect to MKV videos before converting.

Step 3: Click "Convert Now!" to start to convert MKV to MP4.

When the process is over the following window will be opened.