Convert WMV to MP4
Use this video converter to change your WMV videos to MP4. Turn WMV files into the widely supported MP4 format.
Every video app in one place
Pick an app, drop your file in, and download the result. No account, no install, no watermark.
Why convert WMV to MP4
WMV is a Windows format
WMV is Microsoft's Windows Media Video, the format Windows Media Player and Windows Movie Maker have always written. Away from Windows, plenty of phones, browsers and editing programs will not open it at all.
Choose the codec yourself
H.264 for the widest compatibility, H.265 or AV1 for a smaller file at the same picture, VP9 or MPEG-4 when a device asks for them. The list is the one the conversion engine accepts for MP4.
Nothing to install
Conversion runs on our servers over an encrypted connection. There is no software to download and no account needed to use it.
What happens to your WMV file
Upload the WMV and the format is read from the file itself, so there is nothing to declare. The picture and the sound track are decoded and written again into an MP4 container, which is why the result plays where the original would not.
You can add several files in one go, and each one comes back as its own MP4 with the same settings applied. Other formats are welcome in the same batch: the uploader takes any video the converter reads, not only WMV.
You can also paste a link instead of uploading, or pull the file in from cloud storage.
The video settings
The video codec select decides how the picture is stored. H.264 is the safe answer that plays on almost anything. H.265 and AV1 reach a similar picture in a smaller file but need a recent player. Copy carries the existing video stream over untouched and only rewraps it into MP4, which is the fastest route when the codec is already what you want.
Frame rate and screen size are there for a target device that needs a particular number, and deinterlacing cleans up footage from an older camera or a TV recording.
The bitrate method decides how quality is controlled. CRF asks for a constant quality and lets the size follow, on a scale where a lower number means better quality and a bigger file. Constant and variable bitrate let you name the figure in kbps instead.
Anything you do not touch is not sent at all, so the engine keeps its own defaults for it.
The audio settings
The sound track can be re-encoded to AAC, HE-AAC, MP3, MP2, Opus or Vorbis, or copied across as it is. Bitrate, sample rate up to 96000 Hz, and stereo or mono are separate selects beside it.
There is also a switch that removes the audio completely, which is what you want for a silent background clip or before you put a new sound track on the video.
Free to use, and private by default
Converting a video to MP4 is free and needs no account. Every upload and download runs over an encrypted connection, so your footage cannot be read on the way.
Processing is fully automated: nobody watches your videos and they are never used to train AI models. You keep the copyright and the ownership of both the video you upload and the one you get back.
The servers that do the work are in Europe.
How do I convert my file to MP4?
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Upload
Upload your file. It can be any video format.
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Video settings
Now adjust settings such as the video codec.
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Audio settings
Change the audio settings to adjust the quality or remove the audio.
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Convert
Click "Start" to convert your file to MP4.
Questions about converting WMV to MP4
How do I convert WMV to MP4?
Add your WMV file, then either leave the settings alone or set the codec, the frame rate, the size and the sound to suit the device you are aiming at. Start the conversion and download the MP4 when it is done.
Why will my WMV file not play?
WMV is Microsoft's Windows Media Video format. Windows Media Player reads it, and a lot of phones, browsers, TV sets and editing programs do not, because the codec inside is not one they carry. Writing the same video into an MP4 container is what makes it play.
Will converting WMV to MP4 lose quality?
A conversion decodes the video and encodes it again, so a little detail is lost. Leaving the settings alone keeps that change small. To steer it, the bitrate method lets you ask for a constant quality with a CRF value, where a lower number means better quality and a larger file, or name a bitrate in kbps yourself.
Can I convert several videos at once?
Yes. Add as many as you like and each one is converted separately with the same settings, then returned as its own MP4.
Can I remove or change the audio?
Both. One switch drops the sound track completely, and separate selects cover the audio codec, the bitrate, the sample rate and stereo or mono.
Does it cost anything?
No. Converting to MP4 here is free and does not require an account. A paid plan raises the upload limit and how many files you can process at once.
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