3GP to MKV Converter (.3gp to .mkv)

Convert 3GPP Mobile Multimedia Container (.3gp) files to Matroska Multimedia Container (.mkv) directly on your device. 3GP is commonly used for restoring and converting old mobile phone videos into modern mp4 files, while MKV is ideal for remuxing obs studio recordings to mp4 for premiere/davinci resolve or extracting audio tracks. Every conversion runs locally in your browser with zero server uploads.

100% On-Device Processing • Files Never Leave Your Browser (0 KB Uploaded)

Why Convert 3GP to MKV Locally?

Preserve old personal mobile videos privately on your computer. Unlike cloud converters that upload your .3gp files to remote servers, Artoons processes your files directly on your device.

How to Convert 3GP to MKV

  1. Download the free Artoons Desktop App to enable the native 3GP conversion engine.
  2. Drop your .3gp files or folders into the queue and select MKV (.mkv).
  3. Click Convert to save your .mkv files locally with no file size limits.

Frequently Asked Questions

Do my 3GP files ever get uploaded anywhere?

Never — 100% of the conversion runs locally inside your own device memory with 0 KB sent over the network.

Will 3GP to MKV look or sound worse?

Both 3GP and MKV keep crisp detail when swapped locally on your own hardware. You can also tweak output quality in Preferences anytime.

How big of a .3gp file can I convert here?

Supported in the Artoons Desktop App via FFmpeg.

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