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MP4 is a multimedia container format that can store video, audio, subtitles, and images. It’s the most common format for online video streaming and playback, supporting high compression and broad compatibility. MP4 is often used with H.264 and AAC codecs.
M4A is an audio file format based on the MPEG-4 standard. It typically uses AAC or ALAC codecs for high-quality sound. M4A is widely supported by Apple devices and offers better compression and quality than MP3 at similar bitrates.
Convert your .mp4 files to .m4a right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your MP4 files into M4A in just a couple of clicks. No registration, no limits — and it’s 100% free.