Convert MP4 to AVI

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Converting MP4 to AVI is free: drop your MP4 above, hit convert, and download the AVI. Files delete themselves within an hour.

Most MP4 to AVI conversions are wrapper swaps: the pictures stay pictures, they just trade MP4's box for one built for opening old archives and humoring legacy Windows tools. If the codec inside your MP4 is one AVI accepts, Flippy keeps quality bit-for-bit identical; if not, it re-encodes once, carefully, at matching quality.

Why flip MP4 to AVI

MP4 is the world's default video: the file that plays before anyone has to think about it. It was born in 2001, the MPEG standards group, built on Apple's QuickTime design, and its real weak spot is very little day to day: as a container its quality depends on the codec inside.

AVI is the veteran of desktop video: dependable in 1995, cranky about everything invented since. Audio Video Interleave: an early container that predates streaming and most codecs you'd use today. That makes it the right destination when what you need is opening old archives and humoring legacy Windows tools.

How to convert MP4 to AVI

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

MP4 vs AVI, side by side

	MP4	AVI
Born	2001, the MPEG standards group, built on Apple's QuickTime design	1992, Microsoft
Type	video · container	video · container
Best for	playing everywhere: browsers, phones, TVs, editors, slide decks	opening old archives and humoring legacy Windows tools
Weak spot	very little day to day: as a container its quality depends on the codec inside	modern life: no proper streaming, no subtitles, no love for modern codecs
Typical size	roughly 50–100 MB per minute at 1080p, depending on bitrate	usually bulky: its era's codecs compress far less than H.264 or H.265
Plays on	Every browser, phone, TV and editing app worth mentioning.	Old Windows software and desktop players; phones and browsers mostly refuse.

Questions people ask

Will converting MP4 to AVI lose quality?

Usually not: when the video codec is compatible, Flippy swaps the container without re-encoding, so quality is untouched. If a re-encode is needed, it happens once at matching quality.

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

Similar, unless a re-encode is involved: then it depends on the codec. AVI typically runs usually bulky: its era's codecs compress far less than H.264 or H.265.

Where will the AVI file play?

Old Windows software and desktop players; phones and browsers mostly refuse. That's the usual reason people leave MP4 behind: AVI simply opens in more of the places that matter.

How long does MP4 to AVI conversion take?

When it's a pure container swap it's nearly instant, since nothing is re-encoded. Full re-encodes take roughly as long as the video plays, often less.

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