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: the .hevc output is a raw H.265 elementary stream with no container and no audio, so if you want a normal, playable file with sound, see the routing note below.

Read This First: .hevc Has No Audio

A .hevc file is the bare output of an H.265 encoder — just the compressed video bitstream (Annex B), with no container wrapper. Two things follow directly from that:

• The audio is dropped. A raw video elementary stream holds one kind of data — video. Whatever soundtrack the 3GP carried (typically AMR-NB or AAC) is not present in a .hevc file, because there is no container to hold a second track.
• Most ordinary players can't open it. Phones, smart TVs, and QuickTime expect a container (MP4, MKV, MOV). VLC and other FFmpeg-based tools can usually play a raw .hevc stream directly, but support is inconsistent.

Most people converting an old phone clip actually want a playable file that keeps the sound. If that's you, use 3GP to MP4 for the widest compatibility, or 3GP to MKV and pick the H.265 codec to put the same HEVC stream inside a playable container. Choose the raw .hevc output here only when a downstream tool specifically expects an elementary stream.

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 stream. 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.

Why does the converted .hevc file have no audio?

Because .hevc is a raw H.265 elementary stream, not a container. It holds only the encoded video, so there is nowhere to store the 3GP's AMR or AAC soundtrack — the audio is dropped. If you need the sound, convert to a container instead: 3GP to MP4 keeps the audio and plays nearly everywhere, and 3GP to MKV with the H.265 codec puts the same HEVC video inside a playable file alongside its audio.

What can actually play a raw .hevc file?

FFmpeg-based players such as VLC and mpv can usually decode a raw H.265 stream, and developer tools like GPAC or an HEVC stream analyzer are built for it. Consumer players — phones, smart TVs, QuickTime, most browsers — generally cannot, because they expect a container. The reliable fix is to mux the stream into a container, for example ffmpeg -f hevc -i video.hevc -c copy video.mp4, 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 stream 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.