Convert MXF to AIF — Free Online Tool
Convert MXF broadcast files to AIF, extracting the audio stream and encoding it as uncompressed PCM big-endian audio — ideal for moving professional production audio from broadcast containers into a high-fidelity format compatible with Apple workflows and DAWs.
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
MXF (Material Exchange Format) is a professional broadcast container that can hold multiple audio tracks encoded in formats like PCM 16-bit or 24-bit alongside video streams. During this conversion, FFmpeg discards the video content entirely and extracts only the audio track, re-encoding it to PCM signed 16-bit big-endian (pcm_s16be) — the default uncompressed codec for the AIF format. Because both MXF's common audio codec (pcm_s16le) and AIF's pcm_s16be are raw PCM, the conversion is essentially a byte-order swap from little-endian to big-endian, meaning no audio quality is lost. The result is a single-track AIF file compatible with Logic Pro, GarageBand, Pro Tools, and other Mac-native audio applications.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg tool, which handles all reading, stream processing, format detection, and writing for this MXF-to-AIF conversion entirely within the browser via WebAssembly. |
-i input.mxf
|
Specifies the input MXF file. FFmpeg reads the MXF container, which may contain video streams (H.264, MPEG-2, MJPEG), multiple PCM audio tracks, and broadcast metadata including timecode. |
-c:a pcm_s16be
|
Sets the audio codec for the output to PCM signed 16-bit big-endian — the native uncompressed format of AIF files. This converts the MXF's typical little-endian PCM audio to big-endian byte order without any lossy compression, preserving full audio fidelity. |
output.aif
|
Defines the output file as an AIF container. FFmpeg infers the AIF format from the .aif extension and ensures the PCM audio stream is wrapped in an AIFF container structure compatible with Apple applications such as Logic Pro, GarageBand, and QuickTime. |
Common Use Cases
- Extracting clean dialogue or music beds from MXF broadcast recordings to import into Logic Pro or Final Cut Pro for post-production mixing
- Delivering isolated audio from an MXF camera original to a composer or sound designer who works in a Mac-based DAW that expects AIF files
- Archiving broadcast audio in an uncompressed AIF format for long-term preservation outside of the proprietary MXF container
- Pulling reference audio tracks from MXF news or documentary footage to use as scratch audio during editorial review on Apple systems
- Converting multi-track MXF audio stems — one track at a time — into individual AIF files for delivery to a music licensing platform
- Stripping the audio from an MXF ingest file to create a standalone AIF for waveform analysis or loudness metering in broadcast QC workflows
Frequently Asked Questions
No — this conversion is lossless. Both MXF's default audio (pcm_s16le, little-endian PCM) and AIF's pcm_s16be (big-endian PCM) are raw, uncompressed representations of the same 16-bit audio data. The only change is the byte order, which is a mathematically reversible transformation. No compression or quality reduction occurs at any stage.
The video stream is completely dropped. FFmpeg reads the MXF container, extracts the audio track, and writes only the audio to the AIF output file. AIF is a purely audio format and has no capacity to carry video, so no video data is included in the output. If you need the video preserved separately, you would need to run a different conversion command.
By default, FFmpeg selects the first audio stream it detects in the MXF container. MXF files from broadcast cameras or edit systems often carry multiple tracks (e.g., channels 1-2 for production sound, channels 3-4 for a mix). If you need a specific track, you can modify the command by adding a stream selector such as '-map 0:a:1' to target the second audio stream before the output filename. Note that AIF does not support multiple audio tracks, so each stream must be exported as a separate file.
MXF is rich in broadcast metadata including timecode, reel ID, and production information, but AIF has very limited metadata support compared to MXF. Standard MXF metadata and embedded SMPTE timecode will not carry over into the AIF file. If preserving timecode is critical for your workflow, consider documenting it separately or using a format like BWF (Broadcast Wave Format) instead, which supports timecode embedding in a similar PCM container.
Yes. If your MXF source file contains 24-bit audio (pcm_s24le), you can preserve that full bit depth by modifying the codec flag in the command to '-c:a pcm_s24be'. The command would become: ffmpeg -i input.mxf -c:a pcm_s24be output.aif. This produces a 24-bit big-endian AIF file, which is common in professional audio delivery and will be larger than a 16-bit file but retains the full dynamic range of the original recording.
You can run the command in a loop using your terminal. On macOS or Linux, use: for f in *.mxf; do ffmpeg -i "$f" -c:a pcm_s16be "${f%.mxf}.aif"; done. On Windows Command Prompt, use: for %f in (*.mxf) do ffmpeg -i "%f" -c:a pcm_s16be "%~nf.aif". Each MXF file in the directory will be processed individually and output as a matching AIF file with the same base filename.
Technical Notes
AIF uses big-endian byte ordering for its PCM audio data, which reflects its origins on Motorola 68k-based Macintosh hardware. MXF, by contrast, typically stores PCM audio in little-endian format (pcm_s16le or pcm_s24le) following broadcast standards. FFmpeg's conversion here is a direct byte-order swap with no lossy compression applied. One important limitation is that AIF supports only a single stereo or mono audio stream per file, so any MXF files with more than two audio channels or multiple discrete tracks will require explicit stream mapping to export each track separately. Additionally, MXF's SMPTE-defined metadata — such as AS-11 descriptors, package IDs, and embedded timecode — has no equivalent fields in the AIF format and will be silently discarded during conversion. The output file size will be comparable to the original MXF audio portion: a 16-bit stereo AIF at 48kHz produces approximately 5.5MB per minute of audio. If the source MXF was captured at 24-bit, using pcm_s24be in the output command is recommended to avoid unnecessary bit-depth reduction.