Convert OGA to AIFF — Free Online Tool
Convert OGA (Ogg Audio) files to AIFF, transforming Vorbis or FLAC-encoded audio into Apple's uncompressed PCM format for professional macOS workflows. This conversion decodes your Ogg audio stream and re-encodes it as 16-bit big-endian PCM — the native AIFF format — making it compatible with Logic Pro, Final Cut Pro, and other Apple professional audio tools.
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FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
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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
OGA files store audio in compressed form, most commonly using the lossy Vorbis codec or the lossless FLAC codec, inside an Ogg container. AIFF stores audio as raw, uncompressed PCM samples — no codec compression at all. During this conversion, FFmpeg fully decodes the Ogg audio stream (whether Vorbis, FLAC, or Opus) into raw PCM samples in memory, then writes those samples into an AIFF container using the pcm_s16be codec (signed 16-bit, big-endian byte order). Because Vorbis is lossy, converting a Vorbis-encoded OGA to AIFF does not recover the detail that was lost during the original Vorbis encoding — the output will be lossless PCM, but only as accurate as the decoded Vorbis data. If your OGA uses FLAC, however, the decoded audio is bit-perfect and the AIFF will be a true lossless representation of the original source.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg program, the open-source multimedia processing engine that runs inside your browser via WebAssembly for this conversion. |
-i input.oga
|
Specifies the input file — an OGA container that may hold Vorbis, FLAC, or Opus audio. FFmpeg auto-detects the codec inside the Ogg stream so no additional input flags are needed. |
-c:a pcm_s16be
|
Sets the output audio codec to signed 16-bit big-endian PCM, the standard uncompressed audio format for AIFF files. This decodes the compressed Ogg audio (Vorbis or FLAC) into raw PCM samples stored in big-endian byte order as required by the AIFF specification. |
output.aiff
|
Defines the output filename and tells FFmpeg to write an AIFF container. FFmpeg infers the AIFF container format from the .aiff extension and packages the pcm_s16be audio stream accordingly. |
Common Use Cases
- Importing open-source or Linux-originating audio assets into Logic Pro or GarageBand, which natively read AIFF but do not support Ogg containers
- Preparing OGA podcast recordings or field recordings for delivery to an audio post-production house that requires uncompressed AIFF files
- Converting FLAC-encoded OGA music files to AIFF for archival in an Apple-centric studio environment where AIFF is the standard lossless format
- Loading OGA game audio or sound effects into Final Cut Pro or Motion, both of which prefer AIFF or WAV for timeline audio
- Bringing Ogg Vorbis audio from open-source video game rips into an Apple workflow for audio restoration or re-editing work
- Transferring OGA voice memos or lecture recordings into Apple's Compressor or other macOS tools that only accept uncompressed audio inputs
Frequently Asked Questions
No — if your OGA file uses the Vorbis codec, the audio is already lossy, meaning some information was discarded when the OGA was created. Converting to AIFF simply decodes those Vorbis samples into uncompressed PCM; it does not restore the missing detail. The resulting AIFF will be larger and uncompressed, but its audio fidelity ceiling is still the quality of the original Vorbis encoding. If your OGA was encoded with FLAC, however, the conversion is fully lossless and the AIFF will be a perfect representation of the source audio.
OGA stores audio in a compressed form — Vorbis at typical quality settings achieves roughly 10:1 compression, and FLAC achieves around 2:1. AIFF with pcm_s16be is completely uncompressed, storing every audio sample as a raw 16-bit integer. A 5-minute Vorbis OGA file that might be 5–8 MB will expand to roughly 50–60 MB as a 16-bit stereo AIFF at 44.1 kHz. This size increase is expected and is not a problem with the conversion — it reflects the nature of uncompressed audio.
Partially. OGA uses Vorbis comment tags, which FFmpeg can read, but AIFF uses a different metadata structure (ID3 or AIFF-native chunks). FFmpeg will attempt to map common tags like title, artist, and album into the AIFF output, but not all Ogg metadata fields have a direct AIFF equivalent, and some DAWs may not read AIFF metadata written by FFmpeg. You may want to verify tags in your destination application after conversion.
Yes — the FFmpeg command uses pcm_s16be (16-bit) by default, but AIFF also supports 24-bit (pcm_s24be) and 32-bit (pcm_s32be) PCM. You can change the codec flag in the command: replace '-c:a pcm_s16be' with '-c:a pcm_s24be' for 24-bit output, which is common in professional audio. Note that since most OGA source files were mastered at 16- or 24-bit depth, going above the source bit depth will not add real information, only larger files.
On macOS or Linux you can loop over files in the terminal: 'for f in *.oga; do ffmpeg -i "$f" -c:a pcm_s16be "${f%.oga}.aiff"; done'. On Windows Command Prompt, use: 'for %f in (*.oga) do ffmpeg -i "%f" -c:a pcm_s16be "%~nf.aiff"'. This processes every OGA file in the current folder, writing a matching AIFF file alongside each one.
AIFF is Apple's native uncompressed audio format and is natively supported by every Apple audio and video application, including Logic Pro, GarageBand, Final Cut Pro, and QuickTime. Both AIFF and WAV store the same uncompressed PCM audio data, but AIFF uses big-endian byte order while WAV uses little-endian — a difference that is transparent to any modern DAW. In practice, AIFF is marginally preferable for Apple-centric pipelines due to its tighter native integration, though either format will work correctly.
Technical Notes
The FFmpeg command uses pcm_s16be — signed 16-bit big-endian PCM — which is the canonical AIFF audio codec and the format Logic Pro and Final Cut Pro expect when reading AIFF files. The big-endian byte order is an AIFF specification requirement inherited from its Motorola 68000-era origins on classic Macintosh hardware. OGA supports multiple audio codecs (Vorbis, FLAC, Opus), and FFmpeg will automatically detect which codec is in use and decode it appropriately — you do not need to specify the input codec. Because AIFF does not support chapters or streaming metadata structures, any chapter markers present in the OGA file will be silently dropped. OGA files also do not support multiple audio tracks, so there is no downmixing concern. If you are converting a multi-channel Vorbis OGA (e.g., 5.1 surround), the channel layout will be preserved in the AIFF output at 16-bit depth, though some consumer applications may not handle multichannel AIFF correctly. For archival purposes, if your OGA source is FLAC-encoded, consider using pcm_s24be to match the FLAC source bit depth and avoid unnecessary quantization.