Need Uncompressed Audio from Your MP4 Videos?
MP4 videos contain compressed audio tracks, typically AAC or MP3. When you need that audio in uncompressed AIFF format for professional editing, music production, or archival purposes, a simple format change is not enough. Our converter extracts the audio and outputs it as pristine, uncompressed AIFF.
AIFF is the gold standard for audio on Apple platforms. Whether you are importing samples into GarageBand, preparing stems for Logic Pro, or building a sound library on your Mac, AIFF delivers lossless audio quality that professional workflows demand.
How to Convert MP4 to AIFF
- Upload your MP4 video - Drag and drop or select your video file from any device
- Confirm AIFF output - Your audio extracts to uncompressed Apple format automatically
- Download your AIFF file - Get studio-quality audio ready for any Apple DAW or player
The entire process takes seconds for typical video files. No software installation required, and your files process securely in your browser.
Understanding MP4 Audio and AIFF Quality
MP4 files typically contain AAC audio compressed at 128-256 kbps. When converted to AIFF, the audio expands to uncompressed 16-bit or 24-bit PCM data. A 3-minute audio track in AIFF format occupies approximately 30 MB compared to 3-4 MB in the original MP4.
- MP4 audio codec - Usually AAC at 128-256 kbps, sometimes MP3 or AC-3
- AIFF sample rates - Supports 44.1 kHz (CD quality), 48 kHz (video standard), and higher
- AIFF bit depth - 16-bit standard, 24-bit for professional production
- File size increase - Expect AIFF files to be 5-10 times larger than compressed MP4 audio
Apple developed AIFF in 1988 based on the Interchange File Format. It stores raw PCM audio data without compression, making it functionally equivalent to WAV in audio quality but with better metadata support on Mac systems.
When MP4 to AIFF Conversion Makes Sense
Music Production in GarageBand or Logic Pro
Apple Loops, the native loop format for GarageBand and Logic Pro, are specially-tagged AIFF files. When you extract audio samples from MP4 videos for music production, AIFF integrates seamlessly with Apple's DAW ecosystem and supports tempo-stretching features.
Podcast and Video Editing on Mac
If you are editing podcasts in GarageBand or preparing audio for Final Cut Pro, AIFF provides native compatibility without transcoding overhead. Your Mac handles AIFF files efficiently, and you avoid quality loss from repeated format conversions.
Building a Sample Library
Sound designers often extract audio from video clips to build sample libraries. AIFF format preserves full audio quality and metadata, making it ideal for organizing and archiving sounds on Mac-based production systems.
Archival and Master Storage
When you need to preserve audio extracted from video in the highest quality possible, AIFF serves as an archival format. Unlike lossy formats, AIFF files can be converted to any other format later without generational quality loss.
AIFF vs WAV: Choosing the Right Uncompressed Format
Both AIFF and WAV store uncompressed PCM audio with identical sound quality. The choice depends on your platform and workflow.
- Choose AIFF when: You work primarily on Mac, use GarageBand or Logic Pro, need Apple Loop compatibility, or want better metadata handling on Apple systems
- Choose WAV when: You work cross-platform, collaborate with Windows users, or use DAWs like Pro Tools, Ableton, or FL Studio where WAV is the convention
- Consider MP3 or AAC when: File size matters more than quality, such as sharing online or portable device playback
In blind listening tests, AIFF and WAV are indistinguishable. The formats differ only in their container structure and metadata handling, not in audio quality.
Important Quality Considerations
Converting MP4 to AIFF does not improve audio quality beyond what exists in the source file. If your MP4 contains 128 kbps AAC audio, the resulting AIFF will contain that same audio in uncompressed form. The benefit is avoiding additional compression when editing or converting to other formats later.
For maximum quality, start with MP4 files that have high-bitrate audio tracks. Videos from professional cameras often contain 320 kbps AAC or even uncompressed PCM audio, which converts to AIFF with no quality loss.
Batch Convert Multiple MP4 Files
Processing an entire folder of video clips? Upload multiple MP4 files at once and download all extracted audio as AIFF files. Batch conversion saves hours when preparing samples for a music project or extracting audio from a video shoot.
Works on Any Device
Our browser-based converter runs entirely in your web browser. No software to install, no plugins required, and no account needed.
- Windows, Mac, Linux, ChromeOS
- Chrome, Firefox, Safari, Edge
- iPhone, iPad, Android tablets and phones
Your files process locally in your browser, ensuring complete privacy for your video content.
