Turn M4A audio files into MP4 videos with images or waveforms.
Convert MP4 to M4A
Extract audio from MP4 videos and save it as M4A files.
Select your files
or drag and drop your file here
* Files deleted after 24 hoursConvert files up to 100 MB for free
How to convert MP4 to M4A online
1
Drag and drop your MP4 file, or click to select a file. Works with MP4 videos from various sources.
2
The tool extracts audio from your MP4 video and converts it to M4A format.
3
Wait for the conversion to finish. Most MP4 files take 10-30 seconds. A progress bar shows the status.
4
When conversion finishes, you can preview the M4A file. Check the audio quality and file size before downloading.
5
Click Download to save the M4A file to your device. Files are deleted after 24 hours.
About M4A Format
M4A (MPEG-4 Audio) is an audio file format developed by Apple. It's based on MPEG-4 Part 14 and uses AAC (Advanced Audio Coding) compression. M4A files are commonly used for music, podcasts, and audiobooks, especially on Apple devices.
History and Development
M4A was introduced by Apple in 2004 as part of the MPEG-4 standard. It was designed to replace MP3 as a more efficient audio format. M4A uses AAC compression, which provides better sound quality than MP3 at the same file size. The format became popular on Apple devices (iPod, iPhone, iPad) and is now widely supported on many platforms.
Technical Specifications
M4A files use AAC (Advanced Audio Coding) compression, which is more efficient than MP3. The format supports various bitrates, typically ranging from 64kbps to 320kbps. M4A files can include metadata like track titles, artist names, album information, and cover artwork. The format also supports advanced features like chapters and embedded images, which are useful for audiobooks and podcasts.
Advantages
- Better quality than MP3 at same file size
- Widely supported on modern devices
- Supports metadata and cover artwork
- Supports chapters and embedded images
- Good for music and podcasts
- Efficient compression
Limitations
- May not work on very old devices
- Less universal than MP3
- Primarily associated with Apple
- Requires compatible player
- Some devices may need conversion
- Not as widely known as MP3
Device Compatibility
M4A works well on modern devices. It's natively supported on Apple devices (iPhone, iPad, iPod, Mac). Most Android devices and modern Windows media players support M4A. Smart speakers like Amazon Echo and Google Home also support the format. Very old devices may have compatibility issues.
Use Cases for MP4 to M4A Conversion
Converting MP4 to M4A is useful for anyone who wants to extract audio from videos. Common uses:
Music Extraction
Extract audio from music videos. Convert MP4 music videos to M4A audio files for listening on music players.
Podcast Creation
Extract audio from video podcasts. Convert MP4 podcast videos to M4A audio files for podcast players.
Lecture Recording
Extract audio from lecture videos. Convert MP4 lecture recordings to M4A audio files for offline listening.
Audio Library
Build an audio library from video content. Convert MP4 videos to M4A audio files for music players and media libraries.
Storage Saving
Save storage space by extracting audio. M4A files are much smaller than MP4 videos, making them useful for mobile devices.
Audiobook Creation
Create audiobooks from video content. M4A supports chapters and embedded images, which are useful for audiobooks.
Mobile Listening
Listen to audio on mobile devices. M4A files are smaller and more efficient than MP4 videos for audio-only content.
Technical Details
MP4 to M4A Conversion
MP4 videos contain both video and audio tracks. When converting to M4A, the video track is removed and only the audio track is extracted. The audio is then encoded in M4A format using AAC compression. The conversion process preserves the audio quality while removing the video data, resulting in much smaller file sizes.
Format Limitations
M4A has some limitations compared to MP4: it only contains audio, so video information is lost. The format may not work on very old devices that don't support M4A. Some devices may require conversion to other formats. However, M4A provides better audio quality than MP3 at the same file size and is widely supported on modern devices.
MP4 vs M4A
Here's how MP4 compares to M4A:
Feature
Mp4 to M4A
M4A
Content Type
Video and audio
Audio only
File Size
Large (includes video)
Small (audio only)
Use Case
Video playback
Audio playback
Quality
Video and audio quality
Audio quality only
Best For
Watching videos, sharing video content
Music, podcasts, audiobooks, audio-only listening
MP4 to M4A conversion FAQ
Why extract just audio from a video as M4A instead of MP3?
M4A typically provides better sound quality than MP3 at the same file size. It's good for music and voice recordings, preserving more audio detail. If you're extracting audio from music videos, concerts, interviews, or podcast recordings, M4A maintains more of the original audio quality. It also supports advanced features like chapters and embedded images that MP3 doesn't, which is useful for audiobooks or podcast episodes.
Is M4A compatible with my music player and devices?
Most modern devices support M4A files. They work on iPhones, iPads, and Macs (Apple prefers this format), and they play on most Android devices and modern Windows media players. Smart speakers like Amazon Echo and Google Home support them. If you have very old devices, you might run into compatibility issues, but for most modern equipment, M4A works well.
How much smaller are M4A files compared to the original MP4 video?
The difference is significant. By extracting just the audio, a typical 300MB video might become a 15-20MB M4A file, which is less than 10% of the original size. This makes M4A useful when you just need the audio portion for listening on the go, saving storage space on your phone, or creating a music library from video content. The exact space savings depends on the video quality and audio complexity, but it's always much smaller.
Can I adjust the audio quality when converting to M4A?
The converter creates M4A files with standard settings. For advanced customization like bitrate or quality settings, you may need to use audio editing software before converting.
Will M4A files keep metadata like song titles and artist information?
The converter preserves existing metadata from the MP4 file when available. For adding or editing metadata like track titles, artist names, album information, genre tags, or cover artwork, you may need to use audio editing software after conversion.
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