Free, in your browser, no signup: files delete themselves within an hour.
One file at a time for now
Batch processing isn't available yet: drop files one by one, or use the Merger to join them.
You can convert WMV to M4A for free: upload your WMV above and Flippy extracts the audio as M4A in your browser, no signup needed.
Turning WMV into M4A isn't really a conversion: it's an extraction: Flippy lifts the audio track out of your WMV and re-packs it on its own. You keep the sound and drop the pixels, swapping a WMV that runs small for its era, but modern codecs beat it on both size and quality for an M4A built for sounding great anywhere in the Apple ecosystem.
WMV is a time capsule from the Windows XP years: tidy little files with dated manners. It was born in 1999, Microsoft, and its real weak spot is everything Apple, most browsers, and any phone made this decade.
M4A is AAC in Apple's favorite outfit: the audio-only MP4 your iPhone speaks natively. An MP4 container holding only audio: usually AAC, occasionally Apple's lossless ALAC. That makes it the right destination when what you need is sounding great anywhere in the Apple ecosystem.
Drop your WMV file into the flipper above, or click to browse for it.
Check the output format: M4A is already selected for you.
Hit Convert, give it a moment, then download your new M4A.
| WMV | M4A | |
|---|---|---|
| Born | 1999, Microsoft | 2003, popularized by Apple's iTunes Store |
| Type | video · container | audio · lossy |
| Best for | old Windows archives and PowerPoint decks that still insist on it | sounding great anywhere in the Apple ecosystem |
| Weak spot | everything Apple, most browsers, and any phone made this decade | older Windows software and stubborn car stereos that expect a .mp3 |
| Typical size | small for its era, but modern codecs beat it on both size and quality | like AAC: better-than-MP3 sound at about 1 MB per minute |
| Plays on | Windows out of the box; everywhere else wants VLC or a converter. | iPhone, Mac and iTunes natively; most modern Android and Windows apps too. |
No: extraction copies the audio that's already in the WMV. Whatever the soundtrack sounded like inside the video, that's what your M4A will sound like.
Much smaller: you're keeping the audio and dropping the video, which is most of the weight. Expect like AAC: better-than-MP3 sound at about 1 MB per minute.
iPhone, Mac and iTunes natively; most modern Android and Windows apps too. That's the usual reason people leave WMV behind: M4A simply opens in more of the places that matter.
It scales with length and resolution: short clips finish in seconds, long HD videos can take a few minutes. Files auto-delete within an hour after.