MKV → MP4
Re-encodes MKV as H.264 + AAC MP4 (yuv420p, faststart) for native playback on smart TVs, phones and browsers.
Drag files here or click to upload (multiple files supported)
Ctrl+V to paste from clipboard
How to convert MKV to MP4
- 1Upload your MKV file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted MP4 file.
About MKV to MP4 conversion
MKV is an open Matroska container released in 2002. It can encapsulate any encoding and multiple audio tracks and subtitles, and is mostly used for media archiving. MP4 is a MPEG-4 Part 14 container, a universal format for all platforms. This conversion is used to fix MKV native compatibility issues.
The conversion is processed based on FFmpeg. It retains the original resolution and frame rate of the source video, supports optional retention of all audio tracks, uses the default CRF constant quality mode to control output quality, and the output file size varies according to the source encoding and quality settings.
Converted files can be played directly on native players of smart TVs and mobile devices, suitable for local playback, web embedding and progressive download scenarios. Single files must be controlled within 50MB, and the source file duration cannot exceed 10 minutes.
MKV vs MP4: technical comparison
| Feature | MKV | MP4 |
|---|---|---|
| Released | 2002 | 2001 |
| Developer | Matroska.org | MPEG |
FAQ about MKV → MP4
Will the image quality decrease after conversion
Original image quality can be maintained with the same parameters. The conversion uses the CRF constant quality mode to control video quality, and you can adjust parameters according to your requirements to get the corresponding output result.
Can multiple audio tracks be retained
You can choose to retain all audio tracks from the source file. MKV supports encapsulating multiple audio tracks, and the output MP4 container also supports saving multiple audio tracks.
What is the file size limit
Only one file can be converted at a time. The maximum size of a single file is 50MB, and the maximum duration of the source video to be converted is 10 minutes. Files exceeding the limit cannot be processed.
Is file privacy secure
Files are uploaded to the server via HTTPS for conversion. After conversion is completed, the server immediately deletes the source file and output file, and does not store any files.