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WTV to MKV converter, without the upload.

Turn WTV recordings into MKV. It is converted in your browser, so the file never leaves your device.

Drop WTV files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

Convert to

How to convert WTV to MKV

  1. Add your WTV recordings

    Drop WTV files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. MKV is already chosen

    Press Convert. Open Options first if you want to change the defaults. The work happens in this tab and can take a while for large files.

  3. Download

    Save the MKV, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The WTV to MKV converter is part of this page and runs inside your browser. Your recordings are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so work starts the moment you press Convert. How long it takes depends on your device and the size of the file.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

WTV to MKV: what to expect

WTV only plays in Windows Media Center and a few media players. MKV can carry several audio and subtitle tracks in one file. A WTV file usually holds MPEG-2 or H.264 video with AC3 or MP2 audio. WTV is at home in recordings made by Windows Media Center; MKV is the usual choice for films with several audio and subtitle tracks.

The defaults suit most files. Under Options you can lower the resolution, trade quality against file size, remove the sound and trim the start and end. This is demanding work for a browser: a long or high-resolution file can take several minutes, and your device does all of it, so keep the tab open.

This pair uses the compatibility engine, ffmpeg built for the browser, because WTV is not handled by the browser's built-in codecs. It is a one-off download of about 10 MB that the browser keeps, it is slower than the built-in codecs, and it takes files up to 1 GB.

WTV vs MKV

WTV

Windows TV recording

WTV is the file format Windows Media Center writes when it records television, introduced with Windows Vista. It stores the broadcast stream as it came in, with guide data. Recordings of copy-protected channels can be locked to the PC that made them.

Opens in Windows Media Center (discontinued), VLC and Plex; few other apps

WTV converter
MKV

Matroska video

MKV is an open container that can hold practically any video and audio format plus multiple subtitle tracks. That flexibility is why it is popular for films, and why Apple devices and browsers refuse it.

Opens in VLC, Plex and many TVs; not iPhones, QuickTime or most browsers

MKV converter
WTV compared with MKV
WTVWindows TV recordingMKVMatroska video
Stands forWindows Recorded TV ShowMatroska
TypeVideo containerVideo container
CompressionLossyDepends on what is inside
Usually containsMPEG-2 or H.264 video with AC3 or MP2 audioAlmost anything: H.264, HEVC, AV1, several audio and subtitle tracks
Introduced2006, by Microsoft2002, by the Matroska project
Opens inWindows Media Center (discontinued), VLC and Plex; few other appsVLC, Plex and many TVs; not iPhones, QuickTime or most browsers
Best forRecordings made by Windows Media CenterFilms with several audio and subtitle tracks
File extension.wtv.mkv

Questions

Are my recordings uploaded anywhere?

No. The WTV to MKV conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Does converting WTV to MKV reduce quality?

It depends on what is inside the WTV. When its video and audio are already in a form MKV can hold, they can be carried over without being compressed again. Otherwise they are re-encoded, which costs a little quality. Under Options you can favour quality or a smaller file.

Can I convert several WTV files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert WTV to MKV on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the WTV file, press Convert and save the MKV. There is nothing to install.

Is there a file size limit?

Yes. WTV to MKV runs on the compatibility engine, which takes files up to 1 GB, and a long clip takes a while because it is slower than the browser's built-in codecs. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.

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