Conversion guide
Convert MKV to 3GP Online
This guide explains MKV and 3GP, then covers what to expect when converting between them on Muxara.
Convert your MKV file
About MKV (source)
MKV (Matroska) is an open, highly flexible container built for archival and home theater use. It supports multiple video, audio, and subtitle tracks in one file, plus chapters and attachments. MKV is common for Blu-ray rips, anime fansubs, and Plex/Kodi libraries.
Where MKV shows up:
- Blu-ray and DVD rips with commentary and multiple languages
- Anime and foreign films with soft subtitles
- Plex, Jellyfin, and Kodi media servers
- Preserving multiple audio tracks without splitting files
About 3GP (target)
3GP is a mobile multimedia format defined for 3G phones. It uses low resolutions and bitrates suited to MMS and early smartphones. Modern phones record MP4 instead, but 3GP still appears in old phone backups and carrier MMS attachments.
Where 3GP is used:
- Old mobile phone video clips
- MMS attachments from feature phones
- Legacy surveillance on low-end devices
- Markets where bandwidth was severely limited
Converting MKV to 3GP
Pros
- Plays on very old phones and MMS clients
Cons
- Low resolution and bitrate caps
- Irrelevant for modern HD workflows
Caveats
- 3GP enforces mobile-era limits on resolution and bitrate. HD MKV sources will be downscaled. Use 3GP only when a target device explicitly requires it.
- Muxara maps the primary video and audio streams. Extra subtitle or audio tracks may not carry over unless you choose subtitle handling in the converter settings.
- Uploads are processed on dedicated workers and deleted within 24 hours. For offline batch work, use the free Muxara Mac app.
Pricing and privacy
Muxara processes uploads on dedicated workers and deletes files within 24 hours. Free - convert and download at no cost (up to 500 MB per file, fair-use rate limits apply). For offline batch work on your Mac, the free Muxara app converts locally with no upload.