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.
Flippy turns WMA into MKV for free: upload the WMA above and download it wrapped as MKV, sound untouched.
It sounds backwards, but WMA to MKV is a real need: plenty of platforms and tools only accept video, so Flippy re-packs your WMA audio inside an MKV wrapper. Nothing is re-recorded: the sound in your WMA crosses over untouched, and the MKV that comes out is built for high-quality rips and archives with multiple audio and subtitle tracks.
WMA is Windows' old house band: big in the early 2000s, mostly retired now. It was born in 1999, Microsoft, and its real weak spot is the modern world: Apple devices, browsers and most apps have moved on.
MKV is the format that hoards: video, a dozen audio tracks and every subtitle, all in one box. The Matroska container: it will hold practically any codec ever made. That makes it the right destination when what you need is high-quality rips and archives with multiple audio and subtitle tracks.
Drop your WMA file into the flipper above, or click to browse for it.
Check the output format: MKV is already selected for you.
Hit Convert, give it a moment, then download your new MKV.
| WMA | MKV | |
|---|---|---|
| Born | 1999, Microsoft | 2002, the open-source Matroska project |
| Type | audio · lossy | video · container |
| Best for | keeping aging Windows Media software and old archives happy | high-quality rips and archives with multiple audio and subtitle tracks |
| Weak spot | the modern world: Apple devices, browsers and most apps have moved on | playing on TVs, iPhones and editors that never learned to open the box |
| Typical size | MP3-ish sizes; the famous 'CD quality at 64 kbps' claim never quite landed | as big as whatever you put inside: movie files often run to several gigabytes |
| Plays on | Windows Media Player and legacy Microsoft software; little else without help. | VLC and desktop players love it; smart TVs, Apple devices and editors often don't. |
No. Wrapping audio in an MKV container doesn't touch the sound itself: it's the same stream in a different box.
About the same, plus a sliver of container overhead. The audio stream is unchanged; MKV just adds a video-shaped envelope.
VLC and desktop players love it; smart TVs, Apple devices and editors often don't. That's the usual reason people leave WMA behind: MKV 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.