HEVC to 3GP Converter

Convert HEVC to 3GP: What This Tutorial Covers

This guide is for anyone who needs an HEVC (H.265) recording to play on an old feature phone, a legacy 3G handset, or an app or device that only accepts .3gp. Be clear about the trade-off going in: HEVC is a modern, efficient HD codec, while 3GP is a small, low-resolution 3GPP container built for old GSM/UMTS phones using an older, far less efficient codec — so this conversion deliberately downscales the picture and re-encodes it down to fit an obsolete mobile target. If you actually want modern playback, convert to MP4 instead; this page covers the 3GP path step by step and what to do when it goes wrong.

How to Convert HEVC to 3GP

1. Upload Your HEVC File: Drag and drop your .hevc or .h265 file onto the page, or click "Add Files" to browse. You can queue several clips and convert them with the same settings.
2. Pick a Quality Preset: Open Advanced Options and choose a Quality Preset, or set a Specific file size if you have a hard upload cap to hit. The default output uses H.264 video with AMR audio inside the 3GP container.
3. Set the Video Resolution (Optional): Under Video resolution, choose a Preset Resolution like 240p or 176x144 for genuine feature-phone compatibility — this is where most of the size savings come from. You can also Trim a Time Range to export just the part you need.
4. Convert and Download: Click Convert and download your 3GP file. No sign-up, no watermark.

Walk-through: Choosing the Right Codec and Resolution

3GP is a simplified relative of MP4 — both are built on the ISO base media file format — so this is a real transcode of the video and audio into codecs an older handset can actually decode, not a rename. The choices that matter live under Advanced Options:

• For the oldest handsets, set the Video Codec to H.263 and the Audio Codec to AMR Narrow Band — this is the most universally compatible pairing for genuine 3G-era phones.
• For slightly newer 3GP players, the default H.264 video with AMR audio gives broader support while keeping the file small. You can also pick MPEG-4 (Part 2) or Xvid if a specific device documents them.
• If the target plays AAC, switch the Audio Codec to AAC for clearer audio than AMR's 8 kHz narrowband speech — but only if you have confirmed the device supports it.
• Resolution is the biggest lever: classic 3GP sizes are QCIF (176x144) and QVGA (320x240). Picking one of these under Preset Resolutions matches the small screen and shrinks the file far more than the quality slider alone.

Common Errors and How to Fix Them

• "The 3GP has no sound" — A raw .hevc stream carries video only, with no muxed audio track. If your source was a bare HEVC elementary stream rather than a full container, there is no audio to carry into the 3GP. Start from the original container file (for example the .mov or .mp4 the camera produced) if you need the soundtrack.
• "The file is still too large to send" — Drop the Preset Resolution to 176x144 and lower the Quality Preset, or set a Specific file size target. Resolution and length affect size far more than the codec choice.
• "It won't play on a modern phone" — Many current Android and iOS devices dropped built-in 3GP support because they standardized on MP4/H.264. 3GP is the right output only for genuinely old hardware; for a recent phone, use HEVC to MP4 instead.
• "Playback is choppy or the colors look washed out" — You downscaled from an HD HDR source into an SDR, low-resolution codec; some detail and dynamic range is discarded by design. Keep your HEVC original if you may need full quality later.

When This Doesn't Work

3GP is genuinely obsolete — major browsers never supported it in a meaningful way, and most phones sold in the last decade play MP4 instead. Reach for 3GP only when a specific device or app documents .3gp as its required format. If your goal is just a smaller file for a modern device, compress the HEVC or convert to MP4 rather than throwing away resolution. If the target is an old CDMA-network phone specifically, that lineage uses the .3g2 sibling — convert HEVC to 3G2 instead. And if you receive a .3gp and want it back on a modern device, 3GP to HEVC re-wraps it, though it cannot restore detail that was already discarded.

Frequently Asked Questions

Will converting HEVC to 3GP reduce the video quality?

Yes — significantly, and on purpose. HEVC (H.265) is a modern codec that holds HD detail in small files; 3GP pairs an older codec (H.263 or MPEG-4 Part 2, sometimes H.264) with low resolutions built for 3G phones. Re-encoding HEVC into 3GP re-compresses the picture with a much less efficient codec and usually downscales it, so you are trading visible detail for a tiny file that legacy hardware can handle. If you want to keep quality, convert HEVC to MP4 instead.

Which codecs does the 3GP output use?

In Advanced Options you can set the Video Codec to H.263, H.263+, H.264, MPEG-4 (Part 2), or Xvid, and the Audio Codec to AMR Narrow Band, AMR Wide Band, or AAC. By default the output is H.264 video with AMR audio, which gives broad 3GP player support. For the oldest handsets, H.263 with AMR-NB is the most universally compatible pairing, per the 3GPP TS 26.244 specification.

My HEVC file has no audio — will the 3GP be silent?

It can be. A raw HEVC elementary stream (.hevc / .h265) is video only and carries no audio track, so if that is what you upload there is nothing to encode into the 3GP's AMR or AAC audio. If you need sound, start from the original container the recording came in (such as the .mov or .mp4 from your camera or phone), which holds both the video and the audio stream.

Why would anyone still convert to 3GP in 2026?

Rarely, and only for specific reasons: playing a clip on a genuinely old feature phone or 3G handset, feeding legacy hardware or software that only accepts .3gp, or producing the smallest possible file for a strict size or bandwidth limit. For everyday sharing or any phone made in the last decade, MP4 is the better choice — 3GP support has been dropped from most modern devices and was never meaningfully supported in browsers.

How small will the 3GP file be?

It depends mostly on the resolution, length, and quality preset you pick, so there is no fixed number. In our testing, dropping a short 1080p HEVC clip to a 176x144 3GP with a low quality preset produced a file a small fraction of the original size — the kind that transfers over Bluetooth or a slow 3G connection — at the cost of on-screen detail. The resolution preset, not the codec, does most of the shrinking.

Is my file kept private during conversion?

Yes. Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after the conversion finishes — no sign-up, no watermark, and it is never shared or made public.