How to convert MP4 to AAC
- Add your .MP4 file - drop it in the box above or click to browse.
- Convert it to .AAC in a few seconds.
- Download your new .AAC file.
What to expect
- The video image, subtitles, and chapter markers are removed; only audio remains.
- If the MP4's audio is already AAC it can be copied without re-encoding, avoiding any quality loss.
- Re-encoding to a lower AAC bitrate shrinks the file but adds a lossy compression step.
Frequently asked questions
Is the audio quality reduced when converting MP4 to AAC?
MP4 files most often already carry an AAC audio track, so extracting it can be lossless when the stream is copied as-is. If the audio is re-encoded to AAC (for example to change bitrate), the result is a new lossy pass and some quality is lost, though it is usually inaudible at normal bitrates.
Why convert an MP4 to AAC?
To keep only the sound and drop the video, producing a much smaller audio-only file. This is useful for music, podcasts, or lectures where the picture is not needed.
Where does an AAC file play?
AAC plays in VLC, Windows Media Player on Windows 10/11, and the Music app on Apple devices. It is the default audio format for iTunes and YouTube, so support is very wide.
What is lost compared to the original MP4?
The entire video track is discarded, along with any subtitles or chapters. Only one audio track is kept, so a multi-language MP4 is reduced to a single soundtrack.
Programs that convert MP4: Helium Music Manager · Aimersoft DRM Media Converter for Windows · DVD Ripper+Video Converter Ultimate · FormatFactory · Freemake Video Converter · MediaCoder · SUPER · Ultimate Video Converter
