3GP to AVIF Converter

Convert a 3GP Frame to AVIF Online

This tool pulls one still frame out of a .3gp or .3g2 mobile clip and encodes it as AVIF, the AV1-based image format that compresses harder than JPEG, WebP, or PNG at the same visual quality. It is a frame grabber, not an animator: you name a moment, you get one picture. That makes it the right tool for rescuing a usable still from feature-phone footage — and the wrong one if you wanted the clip to keep moving.

How to Convert 3GP to AVIF

1. Upload Your 3GP File: Drag and drop the .3gp or .3g2 file onto the page, or click "+ Add Files" to browse. Several clips can be queued at once and they all run with the same settings.
2. Pick the Moment under Frame Selection: Keep Specific Frame and type the timestamp into Time (seconds) — 2.5 captures the frame two and a half seconds in — or switch to Multiple Screenshots to sample the clip at a fixed interval and get one AVIF per sample.
3. Set Quality Preset and Image resolution (Optional): Quality Preset starts on "Very High (Recommended)", with Specific file size available if you need to cap the output; Image resolution offers "Keep original", Preset Resolutions, Width x Height, and Resolution Percentage.
4. Convert and Download: Click Convert and save the AVIF. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

AVIF at a Glance

Which Still Format for a 3GP Frame?

We run the extraction in two stages: the chosen frame comes out of the video as a lossless PNG first, and that PNG is then encoded to AVIF. Nothing is lost in the handoff, so the only lossy step after the original camera recording is the final AVIF encode. If you want the frame in a format that opens anywhere, 3GP to JPG uses the same extraction with a JPEG encoder at the end.

Switching Frame Selection to Multiple Screenshots repeats those same two stages once per sampled frame, so a 30-second clip sampled at one frame per second returns roughly 30 separate AVIF files rather than one animation. The count is always duration divided by the capture interval, which is worth checking before running a fine interval against a long recording.

Frequently Asked Questions

Does this produce a still AVIF or an animated one?

A still. The AVIF specification does define image sequences, and other tools use that to build animated AVIF (sometimes written AVIFS) from video — this converter does not. It captures the single frame at the timestamp you enter and encodes that. If you want motion in an image format, 3GP to APNG builds a lossless looping animation; if you want an actual video file, 3GP to MP4 is the right target.

Which frame do I get if I leave the settings untouched?

The first one. Time (seconds) starts at 0, so an unmodified conversion returns frame zero of the clip — usually the least flattering frame on the reel, because exposure is still settling and the phone is still moving. Scrub the clip in any player, note the moment you want, and type it in. The field takes decimals, which matters because feature-phone footage often runs at 10-15 fps, putting consecutive frames 0.067-0.1 seconds apart.

Is AVIF really smaller than JPEG for a 176x144 frame?

Usually, but the margin narrows at this size. AVIF's compression advantage is measured on ordinary photographs, where the picture data dwarfs everything else. A QCIF frame is only about 25,000 pixels, so the fixed cost of AVIF's HEIF-derived container structure becomes a meaningful share of the file, and the percentage saving over a well-tuned JPEG shrinks. All four candidate formats produce a file measured in kilobytes here, so pick on compatibility rather than bytes unless you are serving thousands of these.

What exactly is AVIF, technically?

It is the AV1 Image File Format, published by the Alliance for Open Media, and it works by storing an AV1 intra-frame — the same coding tools the AV1 video codec uses for keyframes — inside a HEIF container, which is built on the ISO base media file format. The current specification is v1.2.0, an AOM Final Deliverable dated 16 October 2025. It supports 8, 10, and 12-bit depths, alpha transparency, HDR and wide colour gamut, and monochrome images.

Will the AVIF open on my phone, my laptop, and the web?

On the web, in almost all cases: caniuse reports 94.67% global support, covering Chrome 85+, Firefox 93+, Edge 121+, Safari 16.4+, and iOS Safari 16+. Outside the browser it is more uneven — plenty of desktop image viewers, older photo managers, and print workflows still cannot read AVIF, and some that can are slow at it. When the still has to be universally openable, grab it as 3GP to JPG instead.

Why does the extracted still look soft or blocky?

Because the source does. 3GP video was engineered for 2G and 3G bandwidth, so clips are commonly 176x144 (QCIF), 320x240 (QVGA), or 352x288 (CIF), and already carry the artefacts of a low-bitrate mobile encoder. AVIF stores those pixels efficiently; it cannot reconstruct detail the phone never recorded. If a specific frame looks smeared rather than merely small, nudge Time (seconds) a few tenths either way to land on a steadier moment.

Does the AVIF inherit transparency, HDR, or camera metadata from the video?

None of the three, and each for a structural reason. A decoded 3GP frame has no alpha channel, so the output is opaque despite AVIF supporting alpha. The footage is SDR 8-bit, so AVIF's HDR and 10/12-bit capabilities have nothing to work with. And capture metadata in a 3GP file lives in container-level atoms rather than inside the picture data, so it does not survive as EXIF on the still — you get the pixels of one moment, not the recording's provenance.

How are my uploaded files handled?

Your 3GP is uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. There is no sign-up, there is no watermark on the output, and files are never shared or made public. The practical constraint on a large upload is transfer size and time rather than clip length — rarely an issue with 3GP, since the format was designed to keep recordings tiny in the first place.