MP4 to M4A Converter

Extract audio from MP4 video as M4A (AAC) online for free. Apple-native format, higher quality than MP3 at same bitrate. No software needed. Up to 100 MB.

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Supports MP4, M4V, MOV, AVI, MKV, WebM, WMV, FLV, 3GP, MPEG • Max 100 MB

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How to Extract Audio from MP4 as M4A

1

Upload

Drag and drop your MP4 video file into the converter above, or click Choose Video File to browse your device.

2

Convert

Click Convert to M4A. Our server extracts the audio track from your video and encodes it as M4A (AAC). Takes a few seconds to a minute depending on video length.

3

Download

Click Download M4A to save the extracted audio file. That's it — no registration, no email required.

Extract MP4 Audio on Any Device

On iPhone & iPad

M4A is Apple's native audio format, so extracted audio plays perfectly on every iOS device without conversion or third-party apps. Import M4A files directly into Apple Music, use them as custom ringtones (rename to .m4r), or add them to your iCloud Music Library. If you're extracting podcast audio, lecture recordings, or music from downloaded videos, M4A is the ideal format for Apple's ecosystem.

On Mac

macOS supports M4A natively in Finder (Quick Look), Apple Music, QuickTime Player, GarageBand, and Logic Pro. M4A files integrate seamlessly with Spotlight search, Siri, and Apple's media framework. You can drag M4A files directly into iMovie, Final Cut Pro, or Keynote presentations. For podcasters using Mac, M4A is the preferred format for Apple Podcasts submissions.

On Windows

Windows 10 and 11 play M4A files natively through Windows Media Player, the Movies & TV app, and the Groove Music replacement in Media Player. iTunes for Windows also handles M4A without issues. If you use VLC, foobar2000, or any modern media player, M4A (AAC) works out of the box. Windows File Explorer can display M4A metadata including album art, artist, and duration.

On Android

Android has supported M4A (AAC) playback natively since version 3.1. All major Android music players — Samsung Music, Google's default player, Poweramp, Musicolet — handle M4A files without issues. You can extract audio from video files on your phone by uploading to our converter from your Android browser. The resulting M4A file downloads directly to your device, ready to play.

What is MP4?

MP4 (MPEG-4 Part 14) is the most widely used video container format, standardized by ISO/IEC as part of the MPEG-4 specification. It can hold video streams (H.264, H.265/HEVC, AV1), audio tracks (AAC, MP3, AC3), subtitles, still images, and metadata — all within a single file. Nearly every camera, smartphone, and screen recorder outputs MP4 by default.

The MP4 container is based on Apple's QuickTime MOV format and uses the ISO Base Media File Format (ISOBMFF). This means MP4 and MOV files are structurally very similar — in many cases, a .mov file can be renamed to .mp4 and still play correctly. The format supports streaming, chapter markers, and multiple audio/subtitle tracks.

The key advantage of MP4 is universal compatibility. Every modern device, operating system, web browser, social media platform, and video editor supports MP4. It is the default upload format for YouTube, Instagram, TikTok, and most video platforms. When in doubt about video format, MP4 with H.264 video and AAC audio is the safest choice.

What is M4A?

M4A is an audio-only file format using the same MPEG-4 container as MP4, but containing only an audio stream — no video data. Apple introduced the .m4a file extension to distinguish audio files from video files within the MPEG-4 family. M4A files typically use the AAC (Advanced Audio Coding) codec, though they can also contain Apple Lossless (ALAC) audio.

AAC, the codec used in M4A files, was developed as the successor to MP3 by a consortium including Dolby, Sony, Nokia, and AT&T. It delivers significantly better audio quality than MP3 at the same bitrate — a 128 kbps AAC file sounds comparable to a 192 kbps MP3. AAC also supports more channels (up to 48), higher sample rates, and more efficient encoding of both music and speech.

M4A is the native audio format for Apple's ecosystem — iTunes Store purchases, Apple Music downloads, iPhone voice memos, and GarageBand exports all use M4A. It is also well-supported on Android (since 3.1), Windows (since 7), and all modern web browsers. M4A is the ideal format when you want high-quality audio with broad compatibility, especially for Apple users.

MP4 vs M4A: Quick Comparison

Feature MP4 M4A
Container MPEG-4 Part 14 MPEG-4 Part 14 (audio only)
Content Video + Audio + Subtitles Audio only
Audio codec AAC, MP3, AC3, others AAC or ALAC (Apple Lossless)
File extension .mp4, .m4v .m4a
Developed by ISO/IEC (based on Apple QuickTime) Apple (same container, audio-only extension)
Typical file size Large (video + audio data) Small (audio track only)
Quality vs MP3 N/A (video format) Better at same bitrate (AAC codec)
iTunes / Apple Music Video playback only Full native support (preferred format)
iPhone ringtones Not supported Yes (rename to .m4r)
Android support Full native support Full native support (since 3.1)
Windows support Full native support Full native support (since Win 7)
Best for Video playback, sharing, streaming Music, podcasts, ringtones, Apple ecosystem

Why Extract Audio from MP4 as M4A?

iTunes & Apple Music library

M4A is Apple's native audio format. When you extract audio from a video as M4A, the file integrates seamlessly into your iTunes or Apple Music library — with full metadata support, album art, playlists, and iCloud Music Library sync. Unlike MP3, M4A files are the format Apple uses for iTunes Store purchases and Apple Music downloads, so your library stays consistent.

iPhone ringtones

To create a custom iPhone ringtone, you need an M4A file (renamed to .m4r). Extract audio from your favorite video, trim it to 30 seconds, rename the .m4a extension to .m4r, and add it to your iPhone through iTunes or Finder. This is the only way to use custom audio as an iPhone ringtone without third-party apps or jailbreaking.

Podcasts & voice content

Many podcast recordings, lectures, webinars, and conference talks are distributed as video files but consumed primarily as audio. Extracting the audio track as M4A saves significant storage space (often 90%+ reduction) while maintaining full audio quality. M4A is also Apple Podcasts' preferred submission format, and AAC encoding handles speech clarity better than MP3 at lower bitrates.

Save storage space

Video files are large — a 10-minute 1080p MP4 can easily be 200+ MB, while the audio track alone is typically 5–15 MB as M4A. If you only need the audio (music, dialogue, sound effects, background audio for projects), extracting it as M4A eliminates the video data and reduces file size by 90–95%. This is especially valuable on mobile devices with limited storage.

Frequently Asked Questions

It depends on the source. If the MP4 video already contains an AAC audio track (which most MP4 files do), our converter can extract it without re-encoding — preserving the original audio quality bit-for-bit. If the audio uses a different codec (like AC3 or DTS), it is re-encoded to AAC, which may introduce minimal quality loss. In either case, M4A (AAC) delivers excellent audio quality at the same or smaller file size compared to MP3.
Both MP4 and M4A use the exact same MPEG-4 container format. The only difference is their intended content: MP4 (.mp4) holds video and audio tracks together, while M4A (.m4a) holds only an audio track. Apple introduced the .m4a extension to distinguish audio-only files from video files. Technically, you could rename an audio-only .mp4 to .m4a and it would play the same way — the underlying container format is identical.
Yes. M4A uses the AAC codec, which was developed as the direct successor to MP3. AAC delivers noticeably better sound quality at the same bitrate — a 128 kbps AAC file sounds comparable to a 192 kbps MP3. AAC also supports features MP3 lacks: more than 2 audio channels, higher sample rates (up to 96 kHz), and more efficient encoding of both music and speech. The only trade-off is that some very old devices may not support M4A.
Yes. M4A is Apple's native audio format. It plays natively on every Apple device — iPhone, iPad, Mac, Apple Watch, HomePod, Apple TV — and in iTunes/Apple Music without any conversion or additional apps. M4A is the default format for iTunes Store purchases and Apple Music downloads. If you're building an audio library primarily for Apple devices, M4A is the ideal format.
Yes, with one extra step. iPhone ringtones use the .m4r format, which is identical to M4A — only the file extension differs. Extract audio from your video as M4A, trim it to 30 seconds or less using any audio editor, then rename the file extension from .m4a to .m4r. Connect your iPhone to your Mac or PC, open Finder (macOS) or iTunes (Windows), and drag the .m4r file to your device. It will appear in Settings → Sounds → Ringtone.
Conversion typically takes a few seconds to one minute, depending on the video file size and length. If the MP4 already contains an AAC audio track, the extraction is nearly instant because the audio stream is copied without re-encoding. Larger files (over 50 MB) may take slightly longer due to upload time rather than processing time.
Yes. Convertio.com offers free MP4 to M4A conversion with no watermarks, no registration, and no email required. Upload your video, extract the audio, and download. Your files are encrypted during transfer and automatically deleted from our servers within 2 hours.

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