Does converting 3GP to MP4 reduce quality?

Slightly, because this is a re-encode to H.264 rather than a remux. Early 3GP is already low resolution, so the extra pass is usually less obvious than on a clean 1080p file. Keep the 3GP if it is the only master from an old phone.

Will iPhone play the MP4 if it ignored the 3GP?

That is the usual outcome. H.264 plus AAC in MP4 is what Photos and Messages already expect. If the MP4 also fails, the clip may be corrupt, not merely in the wrong wrapper. Videozify you move the MP4 yourself.

Can I convert AMR audio inside a 3GP?

This page re-encodes the whole file to MP4 with AAC sound. If there is no video track, use the AMR to MP3 converter on the audio stream instead. Speech from MMS-era phones is 8 kHz; neither path will restore a studio mic.

Will this work on iPhone or Android?

Yes. Safari and Chrome run the engine. 3GP clips are usually small, so phones handle them. A long camcorder-style 3GP can still stress RAM. If the tab reloads, convert on a computer..

Can I convert several 3GP files at once?

Not currently. One re-encode at a time keeps memory use predictable. Convert, download, then drop the next clip. After the engine loads once, later files skip that download. A folder from an old card is still one drop each.

Is it legal to convert 3GP to MP4?

Re-encoding clips you recorded on an old phone is the intended case. Re-encoding a commercial 3GP you do not have rights to does not become lawful as MP4. Videozify does not store files and cannot check a licence.

3GP → MP4

3GP to MP4 Converter

Drop a file here

Click to browse, or paste a file from the clipboard.

Choose file

A 3GP to MP4 converter re-encodes a feature-phone or MMS video into H.264 MP4 that modern phones and sites play. Drop the clip, convert, and download an MP4 you can AirDrop or post without hunting for a Nokia player.

How to convert 3GP to MP4

Drop your 3GP file onto the box above, or click Browse to choose it from disk.
Confirm the selected clip is the one you want; this conversion re-encodes to H.264.
Press Convert and wait until the progress bar reaches one hundred percent.
Download the MP4 when it appears; the file saves only to this device.

Why convert 3GP to MP4?

3GP is a mobile video container that 3GPP specified for early camera phones, MMS, and low-bandwidth networks. Nokia, Sony Ericsson, and a decade of Android 2.x handsets wrote .3gp with H.263 or a cramped H.264 profile plus AMR audio. Current Photos apps, iMovie, and Instagram uploaders expect MP4. The file is a time capsule from a 176×144 screen, not a broken download.

People hit this page after finding a folder of holiday clips on an old memory card, or after WhatsApp-from-2012 forwards that only play in VLC. You are not trying to make 3GP look like 4K. You are translating it into the container the rest of the household already uses.

This preset re-encodes to libx264 at CRF 23 with ultrafast, AAC at 128kbps, and fast-start. That is a real second generation. Early 3GP is already soft and blocky, so the extra pass is usually less visible than “this will not open on iPhone.” Keep the 3GP if it is the only copy from a phone you no longer own.

AMR soundtracks become AAC here. Speech survives. Do not expect stereo music fidelity from an MMS clip. If you only needed the voice memo inside the 3GP, extract audio instead of paying for a full video re-encode.

If the new MP4 is still awkward to send, compress the video. If you only needed a few seconds from a long MMS dump, trim the video after it is in MP4.

3GP vs MP4: what's the difference?

	3GP	MP4
Extension	.3gp	.mp4
Type	3GPP mobile container	MPEG-4 container
Typical size (1 min)	1–8 MB	Similar after H.264
Compression	H.263/H.264 + AMR/AAC	H.264 + AAC
Quality	Low-resolution phone capture	Re-encoded (CRF 23)
Device support	Old handsets, VLC	Phones, web, editors

3GP is a mobile video container that early camera phones used for MMS clips modern iPhones and sites still refuse to open.

Will the MP4 look better than the 3GP?

No. Re-encoding cannot invent pixels a QCIF camera never captured. CRF 23 keeps whatever detail survived. The win is playback, not restoration. Upscaling in an editor after this convert will only enlarge blocks.

There is no quality dropdown. The preset is fixed so a browser tab can finish a short clip without a settings maze. If you need a smaller file after it plays, compress the video as a second job.

Some 3GP files are audio-only AMR in a 3GPP wrapper. This page still writes an MP4; a silent or audio-only result means the source had no picture. For those, convert AMR to MP3 instead.

Why doesn't iPhone play a 3GP file?

iOS standardised on MP4, H.264, and HEVC. It never treated 3GP as a first-class camera format the way old Series 40 phones did. Files and Photos may preview some 3GP and fail on others, especially H.263 plus AMR.

Email gateways also rewrite or block 3GP. Converting locally to MP4 avoids a second mystery transcode by a mail server that might crush the already-tiny picture.

If conversion fails, the 3GP may use a profile this wasm build cannot decode. Keep the original and try a desktop ffmpeg if this tab errors rather than looping the same drop.

Frequently asked questions

Does converting 3GP to MP4 reduce quality?: Slightly, because this is a re-encode to H.264 rather than a remux. Early 3GP is already low resolution, so the extra pass is usually less obvious than on a clean 1080p file. Keep the 3GP if it is the only master from an old phone.
Will iPhone play the MP4 if it ignored the 3GP?: That is the usual outcome. H.264 plus AAC in MP4 is what Photos and Messages already expect. If the MP4 also fails, the clip may be corrupt, not merely in the wrong wrapper. Videozify you move the MP4 yourself.
Can I convert AMR audio inside a 3GP?: This page re-encodes the whole file to MP4 with AAC sound. If there is no video track, use the AMR to MP3 converter on the audio stream instead. Speech from MMS-era phones is 8 kHz; neither path will restore a studio mic.
Will this work on iPhone or Android?: Yes. Safari and Chrome run the engine. 3GP clips are usually small, so phones handle them. A long camcorder-style 3GP can still stress RAM. If the tab reloads, convert on a computer..
Can I convert several 3GP files at once?: Not currently. One re-encode at a time keeps memory use predictable. Convert, download, then drop the next clip. After the engine loads once, later files skip that download. A folder from an old card is still one drop each.
Is it legal to convert 3GP to MP4?: Re-encoding clips you recorded on an old phone is the intended case. Re-encoding a commercial 3GP you do not have rights to does not become lawful as MP4. Videozify does not store files and cannot check a licence.