3GP to OPUS Converter

3GP to Opus Converter

This tool pulls the audio track out of a .3gp (or .3g2) mobile video and saves it as a standalone .opus file — the video frames are discarded, audio only. 3GP is the early-2000s container that feature phones used for MMS clips and camcorder video; Opus is the modern, royalty-free codec the web and messaging apps run on today. That makes this the forward-looking way to get an old voice memo or phone recording out of a dead-end container and into an efficient archive you can actually play and share. Whether it gains anything in fidelity depends entirely on what audio the 3GP holds — the format tables below explain why.

3GP Audio (AMR) at a Glance

Opus at a Glance

How to Convert 3GP to Opus

1. Upload Your 3GP File: Drag and drop your .3gp or .3g2 file onto the page, or click "+ Add Files" to browse. You can queue several clips and they all extract with the same settings.
2. Pick a Quality Preset: Open Advanced Options and choose a Quality Preset (Lowest through Highest), or switch to Custom Bitrate, Constant Bitrate, or Variable Bitrate to set an exact value. For AMR speech, a modest bitrate is plenty — see the FAQ on why.
3. Set Audio Channel, Sample Rate, or Trim: Leave Audio Channel and Audio Sample Rate on "Original" to copy the source, or downmix to Mono and resample for a smaller file. Use Trim to keep only the part you need.
4. Convert and Download: Click "Convert" and download the .opus file. No sign-up, no watermark.

Frequently Asked Questions

Why convert old 3GP recordings to Opus instead of leaving them as-is?

The 3GP container is a dead end for everyday use: most modern players, editors, and phones won't open it cleanly, and its AMR audio is awkward to share. Opus is the opposite — an open, royalty-free codec that current browsers, Android 10 and up, and apps like WhatsApp and Discord play natively. Converting a voice memo or recorded call from 3GP to a standalone .opus file rescues it from an obsolete container into a small, modern archive you can actually play, back up, and send.

Will converting to Opus improve how my 3GP recording sounds?

It depends on the source, and the honest answer for most old phone clips is no. If the 3GP holds AMR-NB — the usual case for feature-phone voice — the original was captured at 8 kHz across only the 200 Hz–3,400 Hz telephone voice band. Opus cannot restore highs and lows the phone never recorded; no bitrate setting invents detail that was never there. What you do gain is efficiency and playability. There is a genuine silver lining: Opus's speech engine (SILK) descends from the same speech-coding lineage as AMR, so it re-encodes voice very efficiently — you can store that telephone-grade speech faithfully in a tiny file, just don't expect it to sound like a fresh recording.

What if my 3GP already contains AAC audio instead of AMR?

Some later phones and apps stored AAC inside the 3GP container rather than AMR. AAC is already lossy, so re-encoding it to Opus is a lossy-to-lossy pass — a second compression step. Opus is efficient enough that a sensible bitrate keeps generation loss negligible: pick a Quality Preset or bitrate at or near the source rate rather than pushing far above it, since going higher only grows the file without adding back detail. If you'd rather not re-encode at all and just want broad device support, keeping it as AAC with the 3GP to AAC converter is also reasonable.

What bitrate should I choose for the Opus output?

Less than you might expect, because Opus is very efficient and AMR speech carries little detail to begin with. For voice from a feature phone, a Medium preset (roughly 32–64 kbps) is clean and tiny — that low-bitrate speech range is exactly what Opus was tuned for. For an already-AAC source you're re-encoding, match or exceed the source rate so the second lossy pass costs as little as possible. Pushing a speech clip up to 192 kbps just makes a bigger file; it does not add fidelity the recording never had.

Will the .opus file play on my phone, computer, and old devices?

On modern targets, yes: every current browser (Chrome, Firefox, Edge, Safari) plays Opus, Android recognizes the bare .opus extension from Android 10 onward, and current iPhones play it through Safari and the system audio stack. The gaps are a long tail of older hardware — some pre-2018 car stereos, basic media players, and legacy devices never added Opus. If your target is one of those, convert the same 3GP to a universally supported format with the 3GP to MP3 converter instead. For an older Windows-only workflow that specifically wants .wma, the 3GP to WMA converter covers that legacy case.

Does converting to Opus keep the video?

No. This is an audio extraction — the video track is discarded and you get an audio-only .opus file. Your original 3GP is untouched. If you want to keep the picture alongside the sound in a modern container, use the 3GP to MP4 converter instead, which rewraps the clip as playable MP4 video.

How are my files handled, and how long do you keep them?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. In our testing, a 60-second AMR-NB voice clip from a 3GP file extracted to a roughly 250–350 KB Opus file at a Medium preset — speech stays small because there is little high-frequency detail to encode.