Convert OGG to AIFF — Free Online Tool
Convert OGG (Vorbis/Opus) audio files to AIFF, Apple's uncompressed lossless format, by decoding the lossy compressed stream and encoding it to raw PCM audio at 16-bit big-endian resolution. Ideal for bringing OGG audio into professional macOS audio workflows where AIFF is the native interchange format.
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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
OGG files typically contain Vorbis or Opus audio, both of which are lossy compressed codecs — the original PCM audio data was discarded during the initial compression. During this conversion, FFmpeg fully decodes the compressed Vorbis or Opus bitstream back to raw PCM samples in memory, then encodes those samples into AIFF's uncompressed pcm_s16be format (16-bit signed big-endian PCM). The resulting AIFF file is lossless in the sense that it is uncompressed, but it cannot recover any quality that was lost when the OGG file was originally created. Expect a significant increase in file size — a typical 5-minute OGG at 128 kbps might be around 5 MB, while the equivalent AIFF at 16-bit/44.1kHz will be roughly 50 MB.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg binary — the core multimedia processing engine that handles decoding the OGG container and its compressed audio stream, then re-encoding to AIFF. |
-i input.ogg
|
Specifies the input OGG file. FFmpeg reads the OGG container, identifies the audio codec (typically Vorbis or Opus), and prepares to decode the compressed audio bitstream into raw PCM samples. |
-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 AIFF files. This decodes the lossy OGG audio and writes every sample as a raw 16-bit value with Apple's traditional big-endian byte order. |
output.aiff
|
Defines the output filename and container format. The .aiff extension tells FFmpeg to wrap the pcm_s16be audio stream in an Audio Interchange File Format container, the standard uncompressed audio format for Apple and professional macOS audio applications. |
Common Use Cases
- Importing OGG game audio or sound effects into Logic Pro or GarageBand, which natively prefer AIFF files for sample libraries and project assets
- Preparing OGG audiobook chapters or podcast recordings for mastering in a professional macOS DAW that requires uncompressed source files
- Converting OGG music tracks downloaded from open-source or Creative Commons platforms (like Jamendo or ccMixter) into AIFF for use in Final Cut Pro audio timelines
- Archiving a collection of OGG radio recordings or voice memos in an uncompressed format to prevent further generation loss during future editing
- Delivering OGG-sourced audio to a post-production studio that requires AIFF deliverables as part of their ingest specification
- Converting OGG sound design assets from open-source game engines (like Godot) into AIFF for integration into professional audio middleware such as FMOD or Wwise on macOS
Frequently Asked Questions
No — converting from OGG to AIFF does not recover any audio quality. OGG Vorbis and Opus are lossy codecs, meaning some audio information was permanently discarded when the OGG file was originally encoded. The AIFF output will be an uncompressed, bit-perfect representation of the decoded OGG audio, but it carries all the artifacts and limitations of the original lossy compression. The benefit of AIFF here is compatibility and workflow integration, not quality improvement.
OGG files use lossy compression (typically Vorbis or Opus) which can reduce audio to roughly 5–10% of its raw size. AIFF stores audio as uncompressed PCM samples — every single sample is written to disk with no compression whatsoever. A 5 MB OGG file can easily become a 50–100 MB AIFF file after conversion, depending on the sample rate and duration. This is expected and normal behavior when moving from a compressed format to an uncompressed one.
Partially. OGG Vorbis uses Vorbis Comment tags, while AIFF uses its own MARK/NAME chunk metadata structure. FFmpeg will attempt to map common tags (title, artist, album, etc.) from the OGG container to the AIFF output, but some OGG-specific or custom tags may not have a direct AIFF equivalent and could be dropped. If precise metadata preservation is critical, verify the output file's tags in a tool like MediaInfo or iTunes after conversion.
No. OGG supports chapter markers, but AIFF does not have a chapter structure. Chapter information stored in the OGG container will be silently discarded during this conversion. If you need to preserve chapter information, consider an intermediate format that supports chapters, or document the chapter timestamps separately before converting.
Replace pcm_s16be in the command with pcm_s24be for 24-bit AIFF: ffmpeg -i input.ogg -c:a pcm_s24be output.aiff. Other valid options include pcm_s32be for 32-bit integer or pcm_f32be for 32-bit float. Note that since the source OGG is lossy, upsampling to 24-bit or 32-bit will not reveal any additional detail — it simply stores the same decoded audio in a wider container, which some DAWs require for project consistency.
Yes. On Linux or macOS, you can use a shell loop: for f in *.ogg; do ffmpeg -i "$f" -c:a pcm_s16be "${f%.ogg}.aiff"; done. On Windows Command Prompt, use: for %f in (*.ogg) do ffmpeg -i "%f" -c:a pcm_s16be "%~nf.aiff". This is especially useful for batch-converting game sound effect libraries or music collections. The in-browser tool on this page processes one file at a time, so the command-line approach is recommended for large batches.
Technical Notes
The default output codec pcm_s16be (16-bit signed big-endian PCM) matches AIFF's most common and widely compatible flavor, suitable for CD-quality audio at 44.1 kHz/16-bit. Big-endian byte ordering is a historical Apple convention inherited from Motorola 68k processors and remains the standard for AIFF. If the source OGG was encoded from audio with a sample rate other than 44.1 kHz (e.g., 48 kHz Opus audio, which is Opus's native rate), FFmpeg will preserve the original sample rate in the AIFF output unless you explicitly specify -ar to resample. OGG files can contain multiple audio tracks, but AIFF supports only a single audio stream — FFmpeg will select the first (or best) audio stream by default and ignore any secondary tracks. FLAC-in-OGG (a less common but valid combination) is lossless, so an OGG/FLAC-to-AIFF conversion would be a true lossless-to-lossless transcode with no quality loss. The conversion does not support subtitle streams (OGG doesn't carry them) and AIFF has no subtitle support anyway, so no data is lost on that front.