Video Converters

Convert MP4 to MKV online

Convert MP4 files to MKV online for playback compatibility, publishing, and production handoff workflows with secure cloud processing and quick downloads.

What this converter does

Upload a MP4 file and get a ready-to-download MKV file with private cloud processing and short-lived download links.

File size limit

4096 MB

Runtime limit

3600 seconds

Secure Cloud Converter

Convert files online with secure cloud upload, private storage, and fast background processing.

Secure Uploads

Reliable Processing

Clean Output

Converter route

Choose file

How it works

1. Upload your MP4 file securely from your browser.
2. TooloraHUB processes the conversion in the background.
3. Download the MKV result when processing completes.

Supported formats and limits

Source format: MP4

Target format: MKV

Maximum input size for this route: 4096 MB.

Maximum processing window: 3600 seconds.

Related converters

MP4 to ASF MP4 to AVI MP4 to FLV MP4 to M2TS MP4 to MOV MP4 to MTS MP4 to TS MP4 to VOB MP4 to WEBM MP4 to WMV

Frequently asked questions

Is MP4 to MKV conversion secure?

Uploads are sent directly to private S3 storage through presigned URLs. Processing runs in AWS workers and output links are short-lived.

What are the limits for this converter?

This converter accepts files up to 4096 MB and uses a processing window of up to 3600 seconds.

Can I automate this conversion?

Yes. MP4 to MKV can be run manually or included in repeatable workflows and API-driven automation.

When should I convert MP4 to MKV?

Use this route when you need MKV output from MP4 source files for playback compatibility, publishing, and production handoff workflows.