M4V to 3GP Converter

How to Convert M4V to 3GP Online

1. Upload Your M4V File: Drag and drop, click "Add Files", or paste a URL. The converter accepts both .m4v and .mp4 (the underlying container is the same MPEG-4 / ISO BMFF structure). Batch conversion is supported — queue several clips and they process in sequence.
2. Pick Quality Preset and Bitrate Mode: The Preset dropdown defaults to "Very High (Recommended)" and ranges Highest → Lowest. For finer control switch to Constant Bitrate, Variable Bitrate, Constant Quality, or Constraint Quality, or set a Specific file size target. The default video codec is H.263 with AMR-NB audio (the canonical 3GP combination); switch to H.264 + AAC under Advanced settings for sharper output on smartphones that support it.
3. Resize and Trim (Optional): Use Preset Resolutions (4320p down to 144p — most legacy 3GP devices want 176×144 or 320×240), Width × Height, Resolution Percentage, or Keep original. Time Range trimming accepts seconds or HH:MM:SS.sss so you can ship just the clip you need.
4. Convert and Download: Click Convert. Files are processed in your browser session — no sign-up, no watermark, and inputs are not retained after the session ends.

Why Convert M4V to 3GP?

M4V is Apple's MPEG-4 video container, introduced alongside the iTunes Store launch in 2006 and used today for iTunes purchases, TV episodes, music videos, and Apple TV app downloads. It's structurally almost identical to MP4 — same ISO BMFF layout, typically H.264 video plus AAC (and sometimes Dolby AC-3) audio. 3GP is a different container entirely: defined by the Third Generation Partnership Project (3GPP) and first published April 4, 2003, it strips the MPEG-4 family down to what fits on a 3G mobile network — H.263, H.264, or MPEG-4 Part 2 video; AMR-NB, AMR-WB, or AAC-LC audio.

• Feature-phone and legacy-handset playback — Nokia Series 40, Sony Ericsson, BlackBerry, and pre-2010 Samsung handsets play 3GP natively but ignore M4V. If you're sending video to a relative on an older phone or to a device in a region where feature phones are still common, 3GP is often the only format that works.
• MMS and low-bandwidth sharing — 3GP was designed for MMS payloads and 2G/3G streaming. Re-encoding a 50-100 MB iTunes M4V down to a 5-15 MB 3GP at 176×144 keeps it under typical carrier MMS caps.
• Embedded systems and dashcams — Many older car DVRs, baby monitors, and industrial cameras record and play only 3GP. Converting M4V source footage to 3GP lets you load reference clips onto the device.
• Archival storage on small media — A 30-minute lecture in 3GP at AMR-NB 12.2 kbps audio plus H.263 64 kbps video fits on a 32 MB SD card — useful for cheap classroom hardware or one-time-use review devices.
• Nintendo 3DS / older handhelds — The 3DS YouTube app historically used 3GP, and several aftermarket media players for PSP and similar handhelds still expect the 3GP container.

M4V vs 3GP — Format Comparison

Codec and Resolution Quick Guide

Frequently Asked Questions

Will this convert FairPlay-protected iTunes Store M4V files?

No. M4V files purchased or rented from the iTunes Store / Apple TV app are encrypted with Apple's FairPlay DRM, which ties playback to authorized Apple IDs. No browser-based converter (this one included) can re-encode FairPlay-protected content — the encryption blocks reading the underlying video stream. This tool works on unprotected M4V: clips you exported yourself from iMovie, Final Cut, QuickTime, or Compressor, or M4V files that don't carry the FairPlay signature. If your file is DRM-locked, you'll need to play it back through an authorized Apple device and capture or re-record by other means.

What's the actual difference between M4V and MP4?

Structurally, almost nothing. Both use the ISO Base Media File Format and typically carry H.264 video with AAC audio. M4V exists as a separate extension primarily so Apple can flag files for FairPlay DRM and so iTunes / the Apple TV app recognize them as their content. Many players (VLC, mpv, even some browsers) treat unprotected .m4v as .mp4 if you simply rename the extension. For conversion purposes, you can feed either to this tool — the output container changes regardless of input.

Why is my 3GP file so much smaller — what's the trade-off?

3GP at the default H.263 + AMR-NB combination is heavily compressed for sub-100 kbps bandwidth: H.263 is a 1995 codec optimized for very low bitrates, and AMR-NB is a 4.75-12.2 kbps voice codec. You'll see noticeable blockiness on motion, washed-out color, and tinny audio compared to your H.264 + AAC source. That's the design — 3GP exists to fit video onto 2G/3G networks and 200 KB MMS payloads. If you want a sharper 3GP file, switch the codec to H.264 Baseline + AAC-LC under Advanced settings; just verify the target device actually supports H.264-in-3GP (many feature phones don't).

Should I pick H.263 or H.264 for my 3GP output?

Pick H.263 if the target is a feature phone, an older Nokia / Sony Ericsson / Samsung handset, an embedded device, or any 3GP-only player from before roughly 2008 — these often fall back to a black screen on H.264. Pick H.264 Baseline if the target is a more recent Android phone, a player app like MX Player or VLC, or any device whose manual lists H.264-in-3GP support. AAC audio pairs naturally with H.264; AMR-NB pairs with H.263.

Can I convert MP4 files here too, not just M4V?

Yes. The converter accepts both .m4v and .mp4 inputs because they share the MPEG-4 container structure. If your source is already .mp4, the dedicated MP4 to 3GP converter is functionally identical for this output.

What about going the other direction — 3GP back to a modern format?

Use 3GP to MP4 for that. Note that 3GP-to-MP4 won't recover quality lost in the original down-encode — it just rewraps and (optionally) re-encodes into a more universally playable container. If your starting point is M4V and you want a modern, DRM-free output rather than 3GP, M4V to MP4 is the more common path.

Does the trim apply before or after re-encoding?

Trim is applied during the conversion pass, so only the selected segment is encoded. That means a 10-second trim from a 90-minute M4V converts in seconds, not minutes — the rest of the source is skipped, not re-encoded and discarded.

Will Dolby Digital (AC-3) audio in my M4V transfer over?

No. 3GP doesn't carry AC-3; the audio is re-encoded to AMR-NB (default), AMR-WB, AAC-LC, or HE-AAC depending on what you pick under Advanced. For dialog-heavy content AMR-WB at 12.65-23.85 kbps is a reasonable middle ground. For music, switch to AAC-LC at 96-128 kbps.

What's the maximum resolution I should use for 3GP?

There's no hard ceiling in the 3GPP spec — H.264-in-3GP can technically carry HD — but practical compatibility falls off fast above 480×360. If you need anything bigger, compress MP4 is usually a better workflow than trying to push 3GP past its design envelope.