Convert WebM to 3GP Online

About WebM (source)

WebM is a web-focused container designed for HTML5 video. It usually holds VP8 or VP9 video with Opus or Vorbis audio. Chrome, Firefox, and Edge play WebM natively; Safari support improved in recent versions. Screen recorders and web apps often export WebM.

Where WebM shows up:

• HTML5 <video> players on websites
• Chrome and OBS screen recordings
• Discord and web app exports
• Open, royalty-free web delivery

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 WebM 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 WebM 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.