MotionShine01 / Drop
Choose the MKV file
Drag it in or click to pick it. It is read from your own disk.
Free tool
MKV to MP4 converter.
Turn an MKV, such as an OBS recording, into an MP4 that QuickTime Player, iPhone and video editors open. When the picture can be copied, there is no quality loss. It runs in your browser, so nothing is uploaded.
This runs in your browser. Your files are never uploaded.
How it works
Three steps, nothing to install.
02 / Convert
Turn it into MP4
Press convert. It runs in the page.
03 / Save
Download it
Play the result in the page, then download it.
Questions
Good to know.
Is my file uploaded?
No. It is converted in this tab with your browser, so the file never leaves your computer.
What is a MKV file?
MKV (Matroska) can hold almost any kind of video and sound. OBS Studio can record to it, but QuickTime Player cannot open it.
Why convert to MP4?
MP4 is the most widely accepted video format: phones, editors, YouTube and most websites take it.
Does it lower the quality?
Usually not. When the picture and sound can go into the new file as they are, they are copied with no loss, and the result says so. If not, they are re-encoded, with a small loss.
Is there a size limit?
The file is handled in your browser's memory, so very large files can fail. Close other tabs and try again.
Which browsers work?
Copying works in current Chrome, Edge, Safari and Firefox. When the picture must be re-encoded, use Chrome, Edge or Safari.