3GP to HEVC Converter

3GP to HEVC Converter

3GP is the small, low-resolution container that 3G-era mobile phones recorded to; HEVC (H.265) is a modern, high-efficiency video codec. Converting an old 3GP clip to HEVC re-encodes its picture with H.265 so the file can be smaller and feed modern encoding pipelines — but it cannot add detail the tiny source never captured. One important detail before you start: .hevc is a codec name rather than a standard container extension, so this tool wraps the H.265 video in a Matroska container — keeping your audio, re-encoded to AAC by default — and names the file .hevc, an extension many everyday players don't recognize. If you want a file that plays everywhere, see the routing note below.

Read This First: What the .hevc Output Actually Is

The .hevc extension usually suggests the bare output of an H.265 encoder — a raw video bitstream with no container. This tool does something more useful: it muxes the H.265 video into a Matroska container and names the file .hevc. Two things follow directly from that:

• Your audio survives. Because the output is a real container, the soundtrack the 3GP carried (typically AMR-NB or AAC) is carried across, re-encoded to AAC by default. A truly raw elementary stream could not hold audio at all.
• Most ordinary players still won't open it by name. Phones, smart TVs, and QuickTime judge files by extension and don't expect .hevc. VLC, mpv, and other FFmpeg-based tools play it fine, and renaming the file to .mkv also works because the bytes inside are standard Matroska.

Most people converting an old phone clip actually want a file whose extension every device recognizes. If that's you, use 3GP to MP4 for the widest compatibility, or 3GP to MKV and pick the H.265 codec — same codec, same size savings, a normal extension. Choose the .hevc output here only when a downstream tool specifically asks for a file with that name.

3GP Format at a Glance

HEVC (H.265) Format at a Glance

How to Convert 3GP to HEVC

1. Upload Your 3GP File: Drag and drop your .3gp (or .3g2) clip onto the page, or click "+ Add Files" to browse. You can queue several at once.
2. Set the Quality Preset: The codec is fixed to H.265 for .hevc output. Leave the Quality Preset on "Very High (Recommended)" to stay close to the source, or open File Compression to set a constant/variable bitrate, a specific file size, or a constant-quality (CRF) level.
3. Adjust Video Resolution or Trim (Optional): Use Video resolution to keep the original, scale by percentage, or pick a Preset Resolution; use Trim to export only a time range. Upscaling a small 3G clip will not add real detail, so "Keep original" is usually best.
4. Convert and Download: Click "Convert" and download the .hevc file. No sign-up, no watermark.

Frequently Asked Questions

Will converting 3GP to HEVC improve the video quality?

No, and no honest converter can promise it will. A 3GP clip from a 3G phone was usually captured at a low resolution and bitrate, and re-encoding to HEVC cannot recover detail that was never recorded — lossy in, lossy out, with no upscaling magic. What HEVC does well is shrink the file: at the same visual quality H.265 is roughly 25-50% smaller than H.264. So expect a smaller file, not a better picture. A small, low-resolution 3GP stays small and low-resolution.

Does the converted .hevc file keep the audio?

Yes. Although a raw .hevc from an encoder would be video-only, this converter wraps the H.265 video in a Matroska container so the 3GP's AMR or AAC soundtrack survives, re-encoded to AAC by default. If the output is silent, the source clip most likely had no audio track to begin with. For a file whose extension every device recognizes, 3GP to MP4 plays nearly everywhere, and 3GP to MKV with the H.265 codec gives you the same codec in a standard container.

What can actually play the .hevc file?

FFmpeg-based players such as VLC and mpv open it directly — the bytes inside are a standard Matroska stream carrying H.265 video and AAC audio. Consumer players — phones, smart TVs, QuickTime, most browsers — generally refuse it, because they decide what a file is from its extension and don't expect .hevc. The simple fix is to rename the downloaded file to .mkv, or to convert to MP4/MKV from the start.

Is HEVC really about half the size of H.264?

Roughly, at the same visual quality. The HEVC standard (ITU-T H.265 / ISO/IEC 23008-2, first published in 2013) was designed to deliver about 25-50% better compression than H.264/AVC, with the exact figure depending on resolution and content. With a tiny old 3GP source, the absolute savings are modest simply because the file was already small — In our testing, a short low-resolution 3GP re-encoded to H.265 at the default preset produced a smaller stream than the H.264 equivalent, though the precise ratio varies per clip.

Why is HEVC encoding slower, and does it play everywhere?

HEVC's more complex algorithms need much more processing to encode — roughly 2-10x the computational work of H.264 — so conversions take longer, and the codec is patent-encumbered (licensed through pools like MPEG LA, HEVC Advance, and Velos Media). Playback is native on iPhone 7 and later, Apple Silicon, and most 2017-and-newer Android/Intel/Snapdragon hardware, but it is spotty on older devices and inconsistent in browsers. If broad compatibility matters more than file size, convert to H.264 in an MP4 container instead via 3GP to MP4.

Does this also convert .3g2 files?

Yes. The .3g2 format is the 3GPP2 variant used by older CDMA-based phones; it shares the same container structure as .3gp. You can upload either extension and get a .hevc file back.

How are my uploaded 3GP files handled?

Your file is uploaded over an encrypted connection, converted on our servers, and the result is returned to you for download. Uploads are deleted automatically a few hours after conversion — no sign-up, no watermark, and your files are never shared or made public. The main practical limit on a big clip is upload time, not your device.

Should I upscale my small 3GP to a higher resolution during conversion?

Usually not. A 3G-era clip was captured at a low resolution, and enlarging it to, say, 1080p only stretches the existing pixels — it adds no real detail and makes the file bigger. Keeping "Video resolution" on the original size gives the most honest result and the smallest HEVC stream. Upscale only if a downstream tool strictly requires a specific frame size; even then, the picture will not look sharper than the source allowed.