Convert M4A to MP4

M4A in, MP4 out: free, no signup, and both files delete themselves within an hour.

Drop your file here to upload

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Files auto-delete in 1 hour
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Flippy turns M4A into MP4 for free: upload the M4A above and download it wrapped as MP4, sound untouched. No signup, and both files delete themselves within an hour.

It sounds backwards, but M4A to MP4 is a real need: plenty of platforms and tools only accept video, so Flippy re-packs your M4A audio inside an MP4 wrapper. Where MP4 accepts your M4A's codec the sound crosses over untouched; where it doesn't, it's re-encoded once. The MP4 that comes out is built for playing everywhere: browsers, phones, TVs, editors, slide decks.

A classic M4A to MP4 job: iPhone voice memos and iTunes tracks, bound for feeds, chats and slide decks that expect video.

Why flip M4A to MP4

M4A is AAC in Apple's favorite outfit: the audio-only MP4 your iPhone speaks natively. It was born in 2003, popularized by Apple's iTunes Store, and its real weak spot is older Windows software and stubborn car stereos that expect a .mp3.

MP4 is the world's default video: the file that plays before anyone has to think about it. A container, most often carrying H.264 or H.265 video with AAC audio. That makes it the right destination when what you need is playing everywhere: browsers, phones, TVs, editors, slide decks.

How to convert M4A to MP4

1
Drop your M4A file into the flipper above, or click to browse for it.
2
Check the output format: MP4 is already selected for you.
3
Hit Convert, give it a moment, then download your new MP4.

Best settings for M4A to MP4

Settings for M4A to MP4: none to pick. Where the MP4 container accepts your M4A's audio codec, the stream is copied bit for bit; where it doesn't, Flippy re-encodes it once and leaves the levels alone.

M4A vs MP4, side by side

	M4A	MP4
Born	2003, popularized by Apple's iTunes Store	2001, the MPEG standards group, built on Apple's QuickTime design
Type	audio · lossy	video · container
Best for	sounding great anywhere in the Apple ecosystem	playing everywhere: browsers, phones, TVs, editors, slide decks
Weak spot	older Windows software and stubborn car stereos that expect a .mp3	very little day to day: as a container its quality depends on the codec inside
Typical size	like AAC: better-than-MP3 sound at about 1 MB per minute	for video content, roughly 50–100 MB per minute at 1080p, depending on bitrate; wrapping audio alone stays about the size of the M4A
Plays on	iPhone, Mac and iTunes natively; most modern Android and Windows apps too.	Every browser, phone, TV and editing app worth mentioning.

Questions people ask

Will converting M4A to MP4 lose quality?

No. Wrapping audio in an MP4 container doesn't touch the sound itself: it's the same stream in a different box.

Will the MP4 file be bigger or smaller than my M4A?

About the same, plus a sliver of container overhead. The audio stream is unchanged; MP4 just adds a video-shaped envelope.

Where will the MP4 file play?

Every browser, phone, TV and editing app worth mentioning. That's the usual reason people leave M4A behind: MP4 simply opens in more of the places that matter.

How long does M4A to MP4 conversion take?

Seconds for most M4A files: there are no pictures to encode, so wrapping the audio as MP4 is nearly as fast as copying it. Both files auto-delete within an hour.

More ways to handle these formats

Change M4A format Change MP4 format Reduce MP4 file size Split MP4 MP4 Flipper MP4 sound remover M4A Joiner