CONVERT 3GP → MOV (3GP to MOV)
Fast, secure 3GP to MOV conversion. No registration required.
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HOW TO CONVERT 3GP → MOV
Provide the 3GP clip
Upload through the browser; transfers are encrypted end-to-end and files are quarantined per session.
Convert to MOV
The conversion keeps resolution, frame rate and bit depth identical to the source unless you explicitly override them.
Save to your device
Click download to pull the MOV to local storage; share the short-lived URL with collaborators if needed.
3GP is a container defined by 3GPP for mobile networks, built around H.263 or MPEG-4 Part 2 video and AMR-NB or AAC audio. It was designed for constrained bandwidth and storage on feature phones, which means the video stream is typically encoded at very low bitrates, narrow resolutions — often QCIF (176x144) or CIF (352x288) — and frame rates below 15 fps. MOV is Apple's QuickTime container, which wraps the same codec families (H.264, H.265, ProRes, AAC) but without the aggressive restrictions 3GPP imposed. When a user converts 3GP to MOV, the driving reason is almost always compatibility with macOS or iOS editing tools — iMovie, Final Cut Pro, and QuickTime Player handle MOV natively but treat 3GP as a foreign format that may not seek cleanly or export without an intermediate step. The conversion rewraps or re-encodes the stream into a container macOS considers first-class, restoring drag-and-drop editing, timeline previews, and AirDrop sharing without codec warnings.
Why convert 3GP to MOV
The main trigger is editing on Apple hardware. iMovie and Final Cut Pro accept MOV without any additional codec installation, while 3GP files often cause import failures or audio sync issues in those apps. A secondary reason is archival: 3GP files from old Nokia or early Android phones carry no embedded color profile and are stored without the moov atom index at the front, making them slow to open on desktop players. Rewrapping to MOV repositions the moov atom and gives the file a proper track structure that QuickTime and VLC read instantly without buffering.
3GP vs MOV — Technical specifications
Side-by-side comparison of the technical details.
3GP
- MIME types
- video/3gpp, video/3gpp2
- Extensions
- .3gp, .3g2
- Container
- MPEG-4 Part 14 subset
- Video codecs
- H.263, MPEG-4 SP, H.264
- Audio codecs
- AMR-NB, AMR-WB, AAC
- MIME Type
- video/3gpp
- Extension
- .3gp
- Category
- Video Files
- Full Name
- 3GPP Video
- Conversion Engine
- FFMPEG
MOV
- Extensions
- .mov, .qt
- Container
- QuickTime File Format (ISO Base Media File Format)
- MIME Type
- video/quicktime
- Extension
- .mov
- Category
- Video Files
- Full Name
- QuickTime Movie
- Conversion Engine
- FFMPEG
- MIME type
- video/quicktime
- Common codecs
- ProRes, H.264, HEVC, DNxHD, Animation
- Max file size
- 2^64 bytes
| Specification | 3GP | MOV |
|---|---|---|
| MIME types | video/3gpp, video/3gpp2 | — |
| Extensions | .3gp, .3g2 | .mov, .qt |
| Container | MPEG-4 Part 14 subset | QuickTime File Format (ISO Base Media File Format) |
| Video codecs | H.263, MPEG-4 SP, H.264 | — |
| Audio codecs | AMR-NB, AMR-WB, AAC | — |
| MIME Type | video/3gpp | video/quicktime |
| Extension | .3gp | .mov |
| Category | Video Files | Video Files |
| Full Name | 3GPP Video | QuickTime Movie |
| Conversion Engine | FFMPEG | FFMPEG |
| MIME type | — | video/quicktime |
| Common codecs | — | ProRes, H.264, HEVC, DNxHD, Animation |
| Max file size | — | 2^64 bytes |
3GP vs MOV — Strengths and limitations
What each format does best, and where it falls short.
3GP Strengths
- Extremely low bitrate and file size — great for 2G/3G networks.
- Universal playback in feature phones and early smartphones.
- Based on MP4 — easy to convert and handle with modern tools.
- Mandatory codec in every 3G device since 2001.
Limitations
- Tiny resolutions — rarely above 320×240 in practice.
- H.263 video is far behind H.264 in compression efficiency.
- Metadata support is minimal.
MOV Strengths
- Professional-grade container — supports ProRes, DNxHD, and every pro codec.
- Multi-track friendly — video, audio, subtitles, chapters, markers all coexist.
- Native in every major NLE (Final Cut, Premiere, Resolve, Avid).
- Low overhead — the ISOBMFF structure is efficient.
- Timecode, alpha channels, and HDR metadata are first-class citizens.
Limitations
- Windows and Linux need QuickTime or FFmpeg-based players to read all features.
- ProRes-encoded MOVs are gigantic — 4K clips run 400-900 MB/minute.
- Metadata format diverges slightly from MP4, which causes interop bugs.
Quality & Compatibility
The video codec inside a 3GP file is most often H.263 or MPEG-4 Part 2, both lossy. If the converter rewraps without re-encoding, the existing lossy stream is preserved byte-for-byte inside the MOV container — no further quality loss occurs, but the low-bitrate, low-resolution original remains. If the converter re-encodes to H.264 (the common choice for MOV output), a second lossy generation is introduced, which at typical mobile-phone source bitrates of 64–256 kbps produces visible blocking at motion edges. Alpha channel is not a concern: 3GP has no alpha support, and neither path introduces transparency. AMR-NB audio (the dominant audio codec in 3GP) is typically re-encoded to AAC because MOV players on macOS do not include an AMR-NB decoder by default, making audio transcoding in this direction necessary rather than optional. That transcoding is lossy but negligible given AMR-NB source quality of 4.75–12.2 kbps. Metadata such as creation date and GPS tags embedded in the 3GP moov atom may or may not survive depending on the tool; KaijuConverter passes through standard timestamp fields.
Tips for Best Results
- Keep the source 3GP file after conversion — the re-encoded MOV will be larger but not sharper, so if storage matters on a device you can always re-convert the original rather than the MOV.
- If you need the MOV only for playback on a Mac and not for editing, request H.264 video output explicitly; some converters default to MPEG-4 Part 2 inside MOV, which QuickTime Player supports but iMovie may reject.
- Check audio sync after conversion: 3GP files from older Android handsets sometimes store the AMR audio stream with a slightly misaligned start timestamp that becomes visible only after the container is changed — if sync is off by a fraction of a second, trim the audio track by that offset in QuickTime Player.
Frequently Asked Questions
Only when it has to. If the codecs inside 3GP (usually H.264 or H.265 for video, AAC for audio) are accepted by MOV, we stream-copy — the bytes are repackaged into the new container with zero re-encoding and no quality loss. When the source uses a codec the target does not support, we transcode at a matching bitrate to keep the visual quality close to the original.
With stream copy, expect the job to finish in seconds to tens of seconds regardless of video length — the work is mostly rewriting the container. Transcoding is slower (roughly real-time: a ten-minute clip takes about ten minutes) because every frame must be decoded and re-encoded. The progress bar shows which mode applies.
Yes. Resolution, frame rate, colour space and bit depth are preserved by default; stream copy is literally bit-identical on these parameters. If you explicitly pick a lower bitrate or a different codec in Advanced, the output is rebuilt to those settings, but the default is always "match the source".
3GPP Video
Source format3GP is a multimedia container designed for 3G mobile phones. It stores video and audio at low bitrates optimized for limited bandwidth. Many early mobile phone recordings use this format.
QuickTime Movie
Target formatMOV is Apple's QuickTime container format, widely used in video production on macOS and iOS. It supports high-quality codecs like ProRes and is the default recording format for iPhones and professional cameras.
Going the other way? Convert MOV back to 3GP with the same engine.
Common Use Cases
Share across platforms
Send MOV files to anyone without worrying about whether they have the right software for 3GP.
Embed in documents
Drop MOV output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
MOV often produces smaller files than 3GP for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
3GP vs MOV — Typical file sizes
Approximate file sizes for common scenarios.
- 1-min MMS video (176×144) 300-800 KB
- 5-min phone clip (320×240) 5-15 MB
- iPhone 4K clip (HEVC, 1 min) 170-300 MB
- 4K ProRes 422 (1 min) 400-600 MB
- 1080p ProRes 4444 (1 min) 800 MB - 1.5 GB
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Related comparisons
See these formats side by side to understand which fits your use case best.
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