Convert OGG to AIF — Free Online Tool
Convert OGG (Vorbis/Opus) audio to AIF format by decoding the compressed stream and re-encoding it as uncompressed PCM audio. This is ideal for bringing open-format OGG files into Apple-native workflows where lossless, uncompressed audio is required.
to
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
OGG files typically contain lossy-compressed audio encoded with Vorbis or Opus codecs. During this conversion, FFmpeg fully decodes the compressed OGG audio stream into raw PCM data, then encodes it into AIF's default uncompressed format — 16-bit big-endian PCM (pcm_s16be). Because OGG Vorbis and Opus are lossy codecs, this is a lossy-to-lossless conversion in the sense that the AIF output will be a perfect, uncompressed snapshot of the decoded audio — but any quality loss that occurred when the original OGG was encoded cannot be recovered. The resulting AIF file will be significantly larger than the source OGG because all compression is removed and the audio is stored as raw, uncompressed samples.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg tool. In this browser-based tool, FFmpeg.wasm runs the same engine compiled to WebAssembly — the command shown is identical to what you would run on your local desktop installation of FFmpeg. |
-i input.ogg
|
Specifies the input OGG file. FFmpeg will automatically detect the container format and identify the audio codec inside — whether it is Vorbis, Opus, or FLAC — and decode it accordingly before the output stage. |
-c:a pcm_s16be
|
Sets the output audio codec to 16-bit signed big-endian PCM, which is the standard uncompressed audio encoding used in AIF files. This fully decodes the compressed OGG audio stream (Vorbis or Opus) into raw, uncompressed samples compatible with Apple's AIF format and all Core Audio-based software. |
output.aif
|
Defines the output filename and tells FFmpeg to write an AIF container. The .aif extension signals FFmpeg to use the AIF muxer, which wraps the pcm_s16be audio stream in Apple's Audio Interchange File Format structure. |
Common Use Cases
- Importing game audio assets (commonly distributed as OGG Vorbis) into Apple Logic Pro or GarageBand, which natively work with AIF files
- Bringing OGG audio files from a Linux or open-source game development pipeline into a macOS-based audio mastering workflow that expects uncompressed AIF
- Archiving OGG podcast source files as uncompressed AIF for long-term storage on Mac systems where native playback and editing compatibility is a priority
- Preparing OGG music tracks from open-source or Creative Commons libraries for use in Final Cut Pro or other Apple pro applications that prefer AIF over compressed formats
- Converting OGG Vorbis audio stems received from a collaborator into AIF so they can be dropped directly into an existing Apple Logic Pro session without format negotiation
- Expanding compressed OGG sound effects to uncompressed AIF before processing them through hardware or software that requires raw PCM input without on-the-fly decoding
Frequently Asked Questions
No. OGG Vorbis and Opus are lossy codecs, meaning some audio information is permanently discarded when the OGG file is created. Converting to AIF produces an uncompressed copy of the decoded audio, which preserves exactly what remains in the OGG file — but it cannot restore what was lost during the original lossy encoding. The AIF output will be bit-for-bit identical in terms of the decoded signal, just stored without any further compression.
OGG files use perceptual audio compression (Vorbis or Opus) to reduce file size dramatically — often by a factor of 5x to 10x or more compared to uncompressed audio. AIF stores audio as raw, uncompressed PCM samples with no compression at all. A typical 5MB OGG file might expand to 40–80MB as an AIF, depending on its duration, sample rate, and bit depth. This size increase is expected and is the nature of moving from a compressed to an uncompressed format.
Largely no. OGG supports metadata tags and even chapter markers, but the AIF format does not support chapter data and has limited metadata support compared to OGG's Vorbis comment system. Basic tags like title, artist, and album may be partially preserved depending on FFmpeg's mapping, but chapter markers from the OGG container will be lost entirely in the AIF output. If metadata preservation is critical, review the output file's tags after conversion.
Yes. The default command uses pcm_s16be, which is 16-bit big-endian PCM. AIF also supports 24-bit (pcm_s24be), 32-bit integer (pcm_s32be), 32-bit float (pcm_f32be), and 64-bit float (pcm_f64be) PCM. To change the bit depth, modify the -c:a flag — for example, use '-c:a pcm_s24be' for 24-bit output, which is common in professional audio workflows. Keep in mind that since the source is a lossy OGG, increasing bit depth beyond 16-bit will not recover lost audio detail.
The displayed command processes a single file, but you can loop over multiple files using your shell. On macOS or Linux, run: 'for f in *.ogg; do ffmpeg -i "$f" -c:a pcm_s16be "${f%.ogg}.aif"; done'. On Windows Command Prompt, use: 'for %f in (*.ogg) do ffmpeg -i "%f" -c:a pcm_s16be "%~nf.aif"'. This applies the same pcm_s16be encoding to each OGG file in the directory and outputs a matching AIF file.
Yes. FFmpeg automatically detects whether the OGG container holds a Vorbis or Opus stream and decodes it accordingly before encoding to AIF PCM. The conversion command is the same regardless of which audio codec is inside the OGG file. Opus audio is also lossy, so the same quality considerations apply — the AIF output will be an uncompressed representation of the decoded Opus audio, not a restoration of the original pre-encoded signal.
Technical Notes
OGG is a container format, and the audio codec inside it matters significantly. Vorbis (the most common) uses variable-bitrate lossy compression tuned with a quality scale of 0–10; Opus is a newer, more efficient lossy codec often used for voice and streaming. Both must be fully decoded before writing to AIF, since AIF only supports uncompressed PCM audio. The output codec pcm_s16be (16-bit signed, big-endian PCM) is AIF's standard format and is natively compatible with all Apple software including Logic Pro, GarageBand, QuickTime, and Core Audio. The big-endian byte order is a legacy of AIF's origins on Motorola 68k-based Macs and distinguishes it from WAV, which uses little-endian PCM. If your OGG source was encoded at a sample rate other than 44100 Hz (e.g., 48000 Hz, which is common for Opus), FFmpeg will preserve that sample rate in the AIF output by default — no resampling occurs unless explicitly requested. One known limitation: OGG supports multiple audio tracks in a single file, but AIF does not; only the first (or default) audio stream will be written to the output.