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Merge 3GP Files into One Video

Found a folder of short 3GP clips from an old phone? Join them into one MP4 you can watch and share today, or save as MOV, AVI, VOB or MP3. Nothing is uploaded.

Convert a video
Works with
  • MP4
  • MOV
  • AVI
  • VOB
  • MKV
  • WEBM
  • MPG
  • MPEG
  • M4V
  • 3GP
  • TS
  • MTS
  • M2TS
  • Runs in your browser
  • 100% free
  • Private
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How to merge 3GP files

  1. Get the clips off the phone

    Copy the .3gp files from the phone or its memory card to your computer, then drop them onto the page.

  2. Order the clips

    Adapterry lists the files in filename order. Drag any clip, or use its arrow buttons, to change where it plays.

  3. Merge and keep

    Click Merge & convert to MP4, or pick another format first. Play the preview, then download one file.

Why people use Adapterry

  • Nothing is uploaded

    Your videos are processed in your browser and never leave your device.

  • No account needed

    Open the page and start. No email, no password.

  • No watermark

    Your video comes out clean, with no logo stamped on it.

  • Works offline

    Once the page and video engine have loaded, you can keep working without an internet connection.

Supported formats

Add MP4, MOV, AVI, VOB, MKV, WebM, MPG, M4V, 3GP, TS or MTS files, or a mix, and get back one MP4, MOV, AVI or VOB, or an MP3 of the sound. MP4 plays almost everywhere.

InMP4MOVAVIVOBMKVWEBMMPGMPEGM4V3GPTSMTSM2TSOutMP4MOVAVIVOBMP3
See all formats

Small clips from older phones

Feature phones and early Android phones saved video as 3GP to save space. The clips are small and low resolution, usually with H.263 or H.264 video and AMR or AAC audio. Most 3GP clips are fully converted, but H.264 and AAC clips with matching settings can be joined into MP4 or MOV without re-encoding.

The merged video keeps the first clip's size, so a small phone clip stays small rather than being blown up. If a clip has a different shape, black bars fill the gap. AMR voice audio is converted to AAC for MP4 and MOV.

Questions and answers

Why won't my old 3GP videos play on a new phone?

Many 3GP clips use H.263 video and AMR audio, which newer phones and apps often don't support. Converting to MP4 with H.264 and AAC fixes that.

Will merging make my 3GP clips look sharper?

No. The video keeps the first clip's resolution. Converting can't add detail the phone never recorded.

Can I merge 3GP clips on my phone?

Yes. 3GP clips are small, so they suit a phone browser well. For a large batch, a desktop computer with Chrome or Edge copes more easily.

Can I mix 3GP clips with newer MP4 videos?

Yes. Add them to one list in any order. The first clip sets the frame size, so put the clip with the size you want at the top.

Can I get just the sound from old 3GP clips?

Yes. Choose MP3 as the output and the clips' soundtracks are joined into one MP3, back to back.