WMA in, MKV out: free, no signup, and both 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.
Try another fileFlippy turns WMA into MKV for free: upload the WMA above and download it wrapped as MKV, sound untouched. No signup, and both files delete themselves within an hour.
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. Where MKV accepts your WMA's codec the sound crosses over untouched; where it doesn't, it's re-encoded once. The MKV that comes out is built for high-quality rips and archives with multiple audio and subtitle tracks.
A classic WMA to MKV job: aging Windows Media libraries, bound for the archive, with every audio and subtitle track kept.
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.
Settings for WMA to MKV: none to pick. Where the MKV container accepts your WMA's audio codec, the stream is copied bit for bit; where it doesn't, Flippy re-encodes it once and leaves the levels alone.
| 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 | for video content, as big as whatever you put inside: movie files often run to several gigabytes; wrapping audio alone stays about the size of the WMA |
| 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.
Seconds for most WMA files: there are no pictures to encode, so wrapping the audio as MKV is nearly as fast as copying it. Both files auto-delete within an hour.