MKV to MP4
Drag the MKV file, tap Shift and drop it on MP4. PlanetOS converts it on your computer, so a 4 GB file is no problem and nothing is uploaded.
How to convert MKV to MP4
- 1
Start dragging the MKV file, from the desktop or any folder.
- 2
While you're still holding it, tap Shift. A ring of planets opens around the file, one for each format it can become.
- 3
Drop the file on the MP4 planet. The MP4 copy appears next to the original a moment later.
MKV and MP4
MKV (Matroska) is a flexible container that's common for downloaded films and screen recordings from OBS. Apple devices, many TVs and most video editors prefer MP4.
PlanetOS uses ffmpeg for formats like MKV. On a Mac it's built into the app; on Windows it's downloaded once, the first time a conversion needs it, and checked against its published checksum.
PlanetOS does all of this on your computer. Your files are never uploaded, and it works without an internet connection.
Questions
How long does it take?
It depends on the codec inside the MKV and your computer. Short clips take seconds; a full film can take a few minutes.
Can I go from MP4 to MKV?
Yes, MKV, WebM, AVI and WMV are all in the same ring.