Temporary storage
Originals are removed after processing.
Convert MP4 to M4A online
Upload a supported file up to 1 GB, choose a compatible output, and download the result. Files are removed automatically after processing.
File converter
Upload a MP4 file
3–10 minute downloads
The exact time is based on storage use when each result is ready, then remains fixed.
Compatible outputs
Only valid targets are offered for each input.
Format guide
About MP4 to M4A conversion
FileFy extracts the audio stream and encodes it as M4A. The source must contain audio.
How it works
- Select a MP4 file.
- FileFy uploads and converts the file.
- Download the M4A result.
File handling
The original upload is removed after processing. Each result receives a storage-based expiry period of 3 to 10 minutes when processing completes. Once assigned, that period is not shortened afterward.