Why extract as AIFF instead of WAV?

If you work in Logic Pro or other Apple DAWs, AIFF is the native format with the best integration. For cross-platform work, WAV is equally good.

Will the AIFF be much larger than the original audio track?

Yes. AIFF is uncompressed, so the audio portion will be roughly 8-10 times larger than the compressed AAC in the MP4. However, it will still be smaller than the full MP4 since the video is discarded.

Is this useful for sampling video audio in Logic Pro?

Yes. Extracting to AIFF gives you clean, uncompressed audio that imports instantly into Logic Pro for sampling, chopping, and creative manipulation.

Can I edit the AIFF in Audacity?

Yes. AIFF is universally supported across all audio editors including Audacity, Adobe Audition, Pro Tools, and every other major DAW.

Does extracting as AIFF improve quality over the MP4 audio?

No. The AIFF contains the decoded MP4 audio in uncompressed form. Quality is preserved from the source, not improved.

MP4 to AIFF Audio Extractor

Extracting audio from MP4 video as AIFF gives you uncompressed audio in Apple's native format, ready for professional editing in Logic Pro, GarageBand, and other Mac DAWs. This is the go-to workflow when you need to edit, process, or remix audio from video sources in Apple's professional audio tools.

100% Private — Your files never leave your device

MP4 audio (typically AAC) is decoded to uncompressed PCM in Apple's AIFF format. The result faithfully represents the original audio without additional artifacts, providing a clean foundation for professional editing and processing.

How to Convert MP4 to AIFF

1
Upload your MP4 video file to the converter.
2
Select AIFF as the audio output format.
3
Click Convert and download the uncompressed AIFF audio.

MP4 vs AIFF — Format Comparison

Feature	MP4	AIFF
Full Name	MPEG-4 Part 14	Audio Interchange File Format
Type	Video	Audio
Codec	H.264 / H.265 / AV1	PCM (uncompressed)
Lossless	No	Yes
Extension	.mp4	.aiff
Best For	Online video streaming	Professional music production on Mac (Logic Pro, GarageBand)

MP4 Strengths

Universal device and browser support
Excellent compression-to-quality ratio
Supports subtitles, chapters, and metadata

AIFF Strengths

Lossless, uncompressed audio quality
Native support on macOS and all Apple devices
Industry standard for Mac-based music production

Frequently Asked Questions

When to Convert MP4 to AIFF

Extracting video audio for editing in Logic Pro or GarageBand
Sampling audio from MP4 videos in Mac-based music production
Creating uncompressed audio from video for sound design work
Preparing MP4 video audio for professional mixing sessions

Related Conversions

MP4MOV MP4AVI MP4MKV MP4WebM MP3AIFF WAVAIFF AACAIFF FLACAIFF

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About Our MP4 to AIFF Converter

This converter uses FFmpeg compiled to WebAssembly (WASM) to transform your MP4 files into AIFF format entirely inside your web browser. When you select a file for conversion, the processing happens locally on your device. Your file is never uploaded to any server, never transmitted over the internet, and never stored anywhere outside your own computer. This privacy-first architecture makes our tool safe for confidential and sensitive content — including legal recordings, medical files, financial presentations, personal media, and any other material you would not want on a third-party server.

The conversion process works by decoding the MP4 input using FFmpeg's highly optimized decoders, then encoding the output in AIFF format with carefully tuned settings that balance quality and file size. When possible, the tool uses stream copy mode to remux (rewrap) compatible streams without re-encoding, which preserves the original quality with zero generational loss. When re-encoding is necessary due to codec differences between the two formats, the converter uses high-quality encoding settings to minimize any visible or audible quality reduction.

Supported input formats include MP4, MOV, AVI, MKV, and WebM for video, with automatic detection of the codecs and parameters inside your source file. The output is optimized for maximum compatibility with modern devices and platforms including Windows, macOS, Linux, iOS, Android, smart TVs, and all major web browsers.

Why browser-based conversion is safer: traditional online converters require you to upload your file to a remote server, where it is processed by third-party infrastructure and then made available for download. This workflow exposes your data to interception during upload, unauthorized access on the server, unclear data retention policies, and potential data breaches. Professionals in regulated industries such as healthcare (HIPAA), legal (attorney-client privilege), and finance (SOX, GDPR) often cannot use server-based converters without violating compliance requirements. Our WebAssembly-powered approach eliminates all of these risks by ensuring your data never leaves the browser sandbox on your own device.

The tool handles files up to 500 MB on desktop browsers and 200 MB on mobile devices. No account registration, no software installation, and no recurring subscription is required. Conversion typically completes in seconds for small files and a few minutes for larger ones, depending on your device's processing capabilities. Once the conversion is finished, you can download the result immediately and the source data is discarded from browser memory.