The Matroska video file format, .mkv, is an open source video file container which is part of the larger open source Matroska Multimedia Container which includes .mka (audio), .mks (subtitles), and .mk3D (stereoscopic video). It was first developed in 2002 and is today favored by many video authors because of the size of produced files. In 2010 the mkv format became the basis of the popular browser independent open format called WebM with several free video players providing playback support for video files encoded in .mkv. Microsoft Windows does not have native support for .mkv video files but there are plans to include native playback support in Microsoft's upcoming operating system Windows 10.
The MP4 file format and the .mp4 filename extension refer to the MPEG-4 part 14 digital multimedia format developed by the Moving Picture Experts Group. It is used as a multimedia container to wrap encoded digital video and audio streams, including subtitles and still images if required. In recent decades, the format has been popularized as one of the main standards for streaming media over the internet and other computer networks and for the digital distribution of large multimedia files. MP4 supports a large number of compression audio codecs allowing files in this format to maintain a relatively small size without discounting playback quality.
FreeFileConvert uses tuned encoding for MKV to MP4 conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload MKV files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized MP4 results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent MP4 audio with dependable progress tracking.
Any video player that supports DirectShow parser filters can play .mkv files once the correct decoder filers for the video file are installed. Players such as VLC or Xine have native support for .mkv files which eliminates the need to install the DirectShow decoder filter onto the operating system. The .mkv file format is capable of supporting chapter points, subtitles, different audio streams, video, and well as metadata such as file descriptions, synopsis, cover art and more.
The MPEG-4 Part 14 is standardized as part of the MPEG-4 format in ISO/IEC 14496-14:2003. It is recognized as a container format for audio and video streams and references several filename extensions of which .mp4 is one. The MPEG-4 Part 14 is in many ways identical to Apple's QuickTime format which formed the basis of MPEG-4. However, there are slight differences in compatibility with other previously standardized MPEG features and the added support for IOD or initial object descriptors which describe elementary data streams and set profile information of the resources needed for content playback.
Upload your video file in the MKV format from your device, Dropbox, or Google Drive.
Select MP4 as the output format and click Convert. Adjust optional settings if needed.
Download the converted video file. Each file stays available for up to 5 downloads.