Convert MP3 to FLV

MP3 in, FLV out: free, no signup, and both files delete themselves within an hour.

Drop your file here to upload

Free, no signup
No watermark, ever
Files auto-delete in 1 hour
Nothing to install

Flippy turns MP3 into FLV for free: upload the MP3 above and download it wrapped as FLV, sound untouched. No signup, and both files delete themselves within an hour.

It sounds backwards, but MP3 to FLV is a real need: plenty of platforms and tools only accept video, so Flippy re-packs your MP3 audio inside an FLV wrapper. Where FLV accepts your MP3's codec the sound crosses over untouched; where it doesn't, it's re-encoded once. The FLV that comes out is built for nothing new: today it's mostly old downloads waiting to be rescued.

A classic MP3 to FLV job: voice memos, podcast episodes and music downloads, bound for the odd legacy pipeline that still demands Flash video.

Why flip MP3 to FLV

MP3 is the format that taught music to travel: small, scrappy, and welcome absolutely everywhere. It was born in 1993, Fraunhofer Institute, Germany, and its real weak spot is holding fine detail at low bitrates: it stays small by quietly discarding sound.

FLV is a relic of the Flash era: the format YouTube grew up on, stranded when Flash died. The Flash Video container, typically holding old H.263, VP6 or early H.264 streams. That makes it the right destination when what you need is nothing new: today it's mostly old downloads waiting to be rescued.

How to convert MP3 to FLV

1
Drop your MP3 file into the flipper above, or click to browse for it.
2
Check the output format: FLV is already selected for you.
3
Hit Convert, give it a moment, then download your new FLV.

Best settings for MP3 to FLV

Settings for MP3 to FLV: none to pick. Where the FLV container accepts your MP3's audio codec, the stream is copied bit for bit; where it doesn't, Flippy re-encodes it once and leaves the levels alone.

MP3 vs FLV, side by side

	MP3	FLV
Born	1993, Fraunhofer Institute, Germany	2002, Macromedia (later Adobe), for Flash Player
Type	audio · lossy	video · container
Best for	playing on anything with a speaker, from new phones to twenty-year-old car stereos	nothing new: today it's mostly old downloads waiting to be rescued
Weak spot	holding fine detail at low bitrates: it stays small by quietly discarding sound	playing anywhere at all since Flash was switched off in 2020
Typical size	about 1 MB per minute at 128 kbps: roughly a tenth of CD audio	for video content, small files with dial-up-era expectations about quality; wrapping audio alone stays about the size of the MP3
Plays on	Everything. Phones, browsers, cars, smart speakers, ancient iPods.	Almost nothing modern; VLC and converters are its retirement home.

Questions people ask

Will converting MP3 to FLV lose quality?

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

Will the FLV file be bigger or smaller than my MP3?

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

Where will the FLV file play?

Almost nothing modern; VLC and converters are its retirement home. That's the usual reason people leave MP3 behind: FLV simply opens in more of the places that matter.

How long does MP3 to FLV conversion take?

Seconds for most MP3 files: there are no pictures to encode, so wrapping the audio as FLV is nearly as fast as copying it. Both files auto-delete within an hour.

More ways to handle these formats

Convert MP3 FLV conversion FLV Compressor Trim FLV Change FLV resolution Flip FLV Normalize MP3