Convert 3GP to OGG (Vorbis) Online
Convert audio from legacy 3GP mobile recordings to OGG Vorbis, free, in your browser.
.3gp · up to 100 MB
What it's for
3GP to OGG: legacy mobile recordings to the universal free format
AMR-NB to Vorbis
Decodes AMR-NB (8 kHz) and AMR-WB (16 kHz) from 3GP and re-encodes to free OGG Vorbis.
Native Android
OGG supported since Android 1.0. Ready for ringtones, apps, and native players.
Game engines
Recommended format by Unity and Godot for royalty-free audio assets.
100% private
Personal recordings processed in your browser. They never leave your device.
How it works
Three steps, no hassle
Upload your 3GP file
Drag or select your .3gp or .3g2. Nokia, Sony Ericsson, Motorola videos, AMR voice recordings. Up to 100 MB.
AMR decoding and OGG conversion
FFmpeg decodes the AMR-NB or AMR-WB codec from the 3GP and re-encodes to OGG Vorbis. No server uploads.
Download the OGG
Audio ready for Android, Linux, game engines, ringtone creation, or open digital archival.
FAQ
Got questions?
Each target format has its optimal use case. OGG Vorbis vs MP3: OGG Vorbis is royalty-free and patent-free, offers better quality at equal bitrate, and is the native audio format in Android (supported since Android 1.0), Unity, and Godot Engine. It is the right choice if the audio will be used in an Android app, a video game, or a free software project. OGG Vorbis vs WAV: PCM WAV is lossless, so it is better for permanent archival, forensic analysis, professional transcription, or DAW editing. OGG Vorbis involves lossy re-encoding from the original AMR, while WAV is the exact PCM decoding of the AMR. For archival preservation, WAV is always recommended. For distribution and practical use where size matters (a 1-hour OGG at quality 5 is approximately 70 MB vs 600 MB for 44.1 kHz/16-bit WAV), OGG Vorbis is the balanced option.
Yes, with several factors to consider. First, the original AMR-NB has a sample rate of 8 kHz, meaning audio information above 4 kHz (Nyquist limit at 8 kHz) simply does not exist in the 3GP file — this is a limitation of the codec, not the conversion. The intelligible human voice spectrum is contained roughly between 300 Hz and 3.4 kHz (the standard telephone range per ITU G.711), so voice is perfectly intelligible despite the 4 kHz limit. When converting to OGG Vorbis, optional upsampling from 8 kHz to 44.1 kHz is performed via interpolation for compatibility with software that does not accept 8 kHz, followed by Vorbis re-encoding. The result is an OGG with audio quality equivalent to a clear phone call — excellent for voice but not suited for high-fidelity music.
3G mobile phones from the 2003–2010 era (Nokia Series 60, Sony Ericsson, Motorola RAZR, Samsung SGH, LG) recorded voice and video in 3GP format with AMR-NB audio. These recordings include family testimonies (first words of children now grown adults, voices of deceased relatives), field journalism recordings (interviews in areas without connectivity recorded on a Nokia N95), and personal events from that decade. Converting these recordings to OGG Vorbis allows: playing them on Android without additional conversion; uploading them to digital archive platforms like Internet Archive in a free format; embedding them in HTML5 web pages via the <audio> element compatible with Firefox and Chrome; sending them as attachments on platforms that accept OGG as voice notes (Discord accepts OGG files directly, for example).
Yes. Android has supported OGG Vorbis as a ringtone format since its earliest versions. The process to create an OGG ringtone from a 3GP is: 1) Upload the 3GP to Convertir.ai and download the OGG Vorbis; 2) If you need to trim to just the ringtone segment, open the OGG in Audacity (free, available on Linux, Mac, and Windows), select the desired segment, and export as OGG Vorbis; 3) On Android, copy the OGG file to /sdcard/Ringtones/ using a file manager or via USB cable; 4) In Settings > Sound > Phone ringtone, select the OGG file. This workflow is especially popular for creating custom ringtones from family voice recordings or historical audio fragments from the family 3GP archive.
Yes, especially if the assets are sound effects or voiceover recorded on mobile for indie game prototypes and low-budget projects. Unity, the most widely used game engine in indie development, imports OGG Vorbis natively and recommends it for all Streaming AudioClips (music, ambient audio, long voiceover). In Unity, OGG files are imported with the 'Vorbis' compression setting and played via the AudioSource component. Godot Engine uses OGG Vorbis as its primary streaming audio format. An indie developer recording character voices or ambient sound effects with an old 3G phone in 3GP format can convert them to OGG Vorbis with Convertir.ai and import directly into Unity or Godot without additional steps.
Yes. OGG Vorbis has native support across the entire Linux audio ecosystem without proprietary codecs. GStreamer (the GNOME multimedia framework, base of Rhythmbox, Totem, Cheese, and GNOME Videos) includes the gst-plugins-base plugin providing native OGG Vorbis decoding. FFmpeg on Linux also decodes OGG Vorbis. VLC for Linux supports native OGG. In Debian/Ubuntu distributions, the libvorbis0a package provides Vorbis decoding libraries and is installed by default in most GNOME and KDE desktops. This guarantees that any OGG file generated by Convertir.ai is playable without additional installation on any modern Linux distribution with a desktop environment.
Convert 3GP to OGG: legacy mobile audio to the free Vorbis format for Android and Linux
The 3GP format (3GPP File Format, specified in 3GPP TS 26.234) was the standard for video and voice recording on 3G mobile devices for nearly a full decade, from its introduction with the first UMTS phones around 2003 until Android and iOS smartphones displaced it in favor of MP4 from 2010–2012. During those years, virtually all 3G mobile phones worldwide recorded in 3GP with AMR-NB audio (Adaptive Multi-Rate Narrowband, specified in 3GPP TS 26.071): Nokia Series 40 and Series 60 (Nokia 3650, 6600, N70, N73, N95), Sony Ericsson K-series and W-series (K750i, W800i, K800i, W910i), Motorola (RAZR V3, MOTOKRZR), Samsung SGH-series, and LG KG-series. AMR-NB operates at 8 kHz sample rate with variable bitrates from 4.75 to 12.2 kbps, designed specifically to compress human voice at the minimum possible bitrate while maintaining intelligibility. The result is a vast archive of personal, journalistic, and documentary recordings in 3GP format now exceeding 20 years of age, many containing voices and moments that cannot be recovered by any other means.
Converting 3GP to OGG Vorbis has its specific place in the open audio format ecosystem. Unlike 3GP-to-WAV conversion (oriented to lossless archival and professional transcription), 3GP-to-OGG is optimized for distribution, Android playback, and use in free software projects. OGG Vorbis, developed by the Xiph.Org Foundation and published in its stable specification in 2002, is the only audio codec with quality comparable to MP3 and AAC that is completely free of royalties, patents, and distribution restrictions. Android included native OGG Vorbis support from its version 1.0 in 2008, recognizing its importance for the Linux ecosystem from which Android descends. The most important cross-platform game engines — Unity and Godot Engine — recommend OGG Vorbis as the standard audio asset format for Android games for this same reason. A developer recording sound effects or voiceover with an old 3G phone in 3GP can convert to OGG Vorbis with Convertir.ai and import directly into Unity or Godot without additional steps.
Convertir.ai performs the 3GP-to-OGG conversion entirely in the browser using FFmpeg.wasm. The technical process involves: demultiplexing the 3GP container (based on ISO Base Media File Format, ISO/IEC 14496-12) to extract the AMR-NB or AMR-WB audio stream; decoding the AMR stream using libopencore-amrnb (for AMR-NB) or libopencore-amrwb (for AMR-WB) in libavcodec, implementing the ACELP (Algebraic Code Excited Linear Prediction) decoding algorithm per 3GPP standards; optional upsampling of the decoded PCM from 8 kHz (AMR-NB) or 16 kHz (AMR-WB) to 44.1 kHz via interpolation for universal compatibility with playback software that does not accept low sample rates; re-encoding the PCM to OGG Vorbis using libvorbis (Xiph.Org reference implementation) at quality level 4–5 by default (approximately 128–160 kbps variable), appropriate for voice content; encapsulating in the OGG container with complete Vorbis headers. The resulting OGG is compatible with native Android, Firefox, Chrome, VLC, Unity, Godot, and any Linux player with Vorbis support.