Convert AIF to OGA — Free Online Tool
Convert AIF files to OGA format by transcoding Apple's uncompressed PCM audio into a Vorbis stream inside an Ogg container. This conversion trades AIF's lossless raw audio for Vorbis's efficient lossy compression, producing much smaller files that stream and play natively on Linux systems and open-source media players.
to
FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
Drop your AIF file here
or click to browse
Free — no uploads, no signups. Your files never leave your browser.
Settings
Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
AIF stores raw PCM audio (typically 16-bit big-endian samples) with no compression — every sample is preserved exactly as recorded. During this conversion, FFmpeg decodes those uncompressed PCM samples and re-encodes them using the libvorbis encoder, which applies perceptual lossy compression to discard audio data that human hearing is least sensitive to. The result is packaged inside an Ogg container with the .oga extension, which signals that the file contains audio only (as opposed to a general .ogg file that might contain video). Because this is a lossy encode from a lossless source, the conversion is one-way: you cannot recover the original uncompressed PCM data from the resulting OGA file.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg binary — the open-source multimedia processing engine that this browser tool replicates via WebAssembly. The same binary and command work identically on macOS (where AIF files are most commonly originated), Linux, and Windows. |
-i input.aif
|
Specifies the input file — an AIF file containing uncompressed big-endian PCM audio. FFmpeg reads the AIFF container, identifies the PCM codec (commonly pcm_s16be for standard 16-bit AIF files), and decodes the raw samples into an internal floating-point representation for re-encoding. |
-c:a libvorbis
|
Selects the libvorbis encoder to compress the decoded PCM audio into Vorbis format. Vorbis is an open, royalty-free lossy codec — a direct contrast to AIF's uncompressed storage — and it is the default and most widely compatible audio codec for the OGA container. |
-q:a 4
|
Sets the Vorbis variable-bitrate quality level to 4 on a scale of 0–10, targeting approximately 128–160 kbps. This is the standard balanced setting that preserves perceptual quality well for both music and voice content originating from a high-quality AIF source, while producing files roughly 85–90% smaller than the input. |
output.oga
|
Defines the output filename with the .oga extension, which instructs FFmpeg to write an Ogg container holding only audio streams. The .oga extension specifically distinguishes this as an audio-only Ogg file, consistent with the fact that the AIF source contains no video. |
Common Use Cases
- Reducing the file size of large Apple-recorded AIF sessions for distribution on Linux-based web servers or open-source streaming platforms that prefer the Ogg ecosystem
- Preparing high-fidelity AIF field recordings or studio takes for use in open-source games and interactive media projects that require royalty-free Vorbis audio
- Converting AIF podcast or voice-over masters into a compact OGA format for publishing through platforms that support Ogg Vorbis natively, such as Icecast streams
- Archiving a collection of AIF audio exports from a Mac DAW into a smaller, open-format equivalent for long-term storage on Linux NAS systems
- Supplying Vorbis audio assets in an OGA container to web developers building HTML5 audio players targeting Firefox and Chromium-based browsers without licensing concerns
- Batch-converting AIF sound effects from a Mac audio library into OGA files for use in a Godot Engine project, which natively supports Ogg Vorbis
Frequently Asked Questions
Yes — this conversion introduces lossy compression for the first time, since AIF is uncompressed PCM and Vorbis is a perceptual lossy codec. At the default quality level of 4 (roughly 128–160 kbps variable bitrate), most listeners cannot distinguish the result from the original in a blind test for music and voice content. However, because the original AIF is lossless, any quality loss from Vorbis encoding is permanent, so you should always keep your AIF master if you need to re-encode at a different quality later.
OGG is a general-purpose Ogg container that can hold video, audio, and other streams, while OGA is a narrower convention signaling that the Ogg container holds audio only — no video tracks. When converting from AIF, which is a pure audio format, OGA is the semantically correct output extension. Both files are technically identical in structure if they contain only a Vorbis stream, but OGA helps media players and file managers categorize the file correctly without scanning its contents.
AIF stores audio as uncompressed PCM, so a stereo 44.1 kHz 16-bit AIF file consumes roughly 10 MB per minute. At Vorbis quality level 4 (approximately 128–160 kbps), the OGA output will be around 1–1.2 MB per minute — a reduction of roughly 85–90%. Higher-resolution AIF files (24-bit or 32-bit) will see even greater size reductions since Vorbis always encodes to a target perceptual quality rather than preserving bit depth.
Basic text metadata tags (title, artist, album, track number) from AIF's MARK and NAME chunks are generally read by FFmpeg and written into the Ogg Vorbis comment header in the OGA file. However, embedded album art stored in AIF files is not reliably transferred by FFmpeg during this conversion, so you may need to re-add cover art separately using a tag editor like MusicBrainz Picard or Kid3 after conversion.
The quality is controlled by the -q:a flag, which accepts integer values from 0 to 10. The default used here is 4 (roughly 128–160 kbps). To produce a higher-quality, larger file, increase the value — for example, replace '-q:a 4' with '-q:a 7' for approximately 220–240 kbps. For smaller files where quality is less critical (e.g., voice recordings), '-q:a 2' targets around 80–96 kbps. The full command at quality 7 would be: ffmpeg -i input.aif -c:a libvorbis -q:a 7 output.oga
Yes. On Linux or macOS you can use a shell loop: for f in *.aif; do ffmpeg -i "$f" -c:a libvorbis -q:a 4 "${f%.aif}.oga"; done. On Windows PowerShell, use: Get-ChildItem *.aif | ForEach-Object { ffmpeg -i $_.FullName -c:a libvorbis -q:a 4 ($_.BaseName + '.oga') }. This is especially useful for large AIF collections from a Mac DAW that exceed the 1 GB browser limit of the online tool.
Technical Notes
AIF encodes audio as big-endian signed PCM at 16, 24, or 32 bits per sample, meaning the source data entering the Vorbis encoder is always full-resolution. The libvorbis encoder operates internally at 32-bit floating-point precision before applying its psychoacoustic model and writing variable-bitrate Vorbis packets into the Ogg container. The Ogg container uses a page-based streaming structure that is fundamentally different from AIF's IFF chunk hierarchy — this means the OGA file is naturally suited for progressive streaming playback, whereas AIF requires the entire file to be accessible. One notable limitation is that Vorbis audio is natively limited to a maximum of 255 channels and a sample rate ceiling determined by the encoder, though for typical stereo or mono AIF sources from Mac workflows this is never a constraint. OGA with Vorbis is natively supported in Firefox and all Chromium-based browsers, making it a useful intermediate format for web audio, but it is not supported in Safari or iOS without a JavaScript polyfill. If lossless quality must be preserved while still using the Ogg/OGA container, consider encoding with the FLAC codec instead (-c:a flac), which is also supported in the OGA container and would eliminate the quality loss inherent in this Vorbis conversion.