3G2 to AU Audio conversion is the process of extracting or transcoding the audio track from a 3G2 multimedia file into the AU audio container format. This converts audio streams (commonly AAC or AMR inside 3G2) into an AU file, producing a simple headered audio file suitable for legacy audio players, telephony, and certain Unix-based systems.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
MOV files from iPhone, Mac, and editing apps often need conversion before they are easy to share, upload, or play on Windows. This guide explains MOV vs MP4, when you can remux without quality loss, when to re-encode, and the best MP4 settings for web, email, YouTube, Windows, audio, subtitles, HDR, file size, and batch conversion.
Read guide →Turning an MP4 into a GIF is simple, but making one that looks sharp, loads quickly, and works well on social platforms takes a few smart choices. This guide explains why GIFs get large, how frame rate, dimensions, duration, color palettes, and dithering affect quality, and when MP4, WebP, or animated PNG may be the better format.
Read guide →Compare the three most popular video container formats — MP4, MKV, and WebM — across codec support, device compatibility, file size, streaming performance, and editing workflows. Learn which format fits your specific use case and how to convert between them.
Read guide →Drag your .3G2 file from your computer or use the browse function.
Confirm .au as the selected destination format.
Click "Convert" and download your converted .AU file once ready.
The 3G2 format uses MIME type video/3gpp2 and often contains MPEG-4 or H.263 video codecs with AAC or EVRC audio codecs. AU files have the MIME type audio/basic and usually contain uncompressed audio data or μ-law encoded audio, making them compatible with classic audio software environments.
The AU Audio (.AU) format is commonly used for video. Understanding its characteristics can be helpful when converting to or from other formats like 3G2.
While specific technical details aren't available here, AU Audio files generally serve the purpose of storing video effectively within their domain.
Our Online 3G2 to AU Converter allows you to transform 3G2 video files into AU audio format effortlessly. Whether you need to extract audio or convert for compatibility, this tool provides a fast and user-friendly solution without software installation.
3G2 is a multimedia container format that typically stores video and audio optimized for mobile devices, while AU is a simple audio file format primarily used in Unix systems. Converting 3G2 to AU extracts the audio component, making it suitable for audio-only applications and legacy systems that support AU format.
For best quality, preserve the original sample rate when converting (e.g., 44.1 kHz -> 44.1 kHz) to avoid resampling artifacts.
Keep individual 3G2 files under ~100–250 MB for faster uploads and reliable browser-based conversion; large files may take longer or require a desktop tool.
If the 3G2 uses compressed audio (AAC/AMR), expect lossy re-encoding when creating AU PCM; choose a higher bitrate or 16-bit PCM to minimize perceived quality loss.
Use batch conversion only if the tool supports it; ensure consistent sample rate/bit depth across files to simplify post-processing.
This 3G2 to AU converter saved me hours of work.
John M.
Audio Engineer
Quick and reliable conversion, exactly what I needed!
Lisa K.
Content Creator
Simple interface and excellent output quality for AU files.
Mark D.
Tech Enthusiast
Start your free 3G2 to AU conversion now.
Drag your file here to to upload.
Up to 250MB
AU is a legacy container primarily for PCM audio; it does not support embedded video or advanced metadata, so video content is discarded during conversion.