Back to all tools
Convert MP4 to MKV
Convert MP4 to MKV format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
MP4
MPEG-4 Part 14The most widely used video container. Supports H.264/H.265 video with AAC audio, offering excellent compatibility across all devices and platforms.
Best for
Web videoStreamingSocial mediaMobile video
Advantages
- + Universal compatibility
- + Good compression
- + Streaming support
- + Hardware accelerated
Limitations
- − Proprietary codecs (licensing)
- − Not ideal for editing
Target
MKV
Matroska VideoOpen-source container that can hold many video, audio, and subtitle tracks. Popular for high-quality video archiving and media libraries.
Best for
Video archivingMulti-track contentSubtitlesMedia libraries
Advantages
- + Open source
- + Any codec
- + Multiple tracks
- + Chapters & subtitles
Limitations
- − No native browser support
- − Not streamable
- − Limited mobile support