How to convert Windows Media (WMV) to MP4
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
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Convert Windows Media (WMV) to MP4
NexMedia converts Windows Media (WMV) to MP4 on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About Windows Media (WMV)
Windows Media Video (WMV) is Microsoft's family of video codecs, stored in the ASF container.
Older Windows software, Windows Movie Maker projects and video from the 2000s.
WMV files can carry DRM, and many devices outside Windows do not play WMV.
Convert WMV to MP4 online free, no account required — MP4 is a widely supported video container, usually holding H.264 video and AAC audio.
Change WMV to MP4 without losing quality — convert WMV to MP4 free in your browser.
Why does my WMV video refuse to play on my Mac or iPhone? Windows Media Video uses Microsoft codecs that Apple and Android devices don't include, so a conversion to MP4 is the quickest fix.
About MP4
MP4 (MPEG-4 Part 14) is a container format standardised by ISO. It usually holds H.264 or H.265 video with AAC audio, and it can also carry subtitles and chapter markers.
It is the most widely supported video format: phones, browsers, smart TVs and video sites all play it.
The video inside an MP4 is almost always compressed with a lossy codec, so every re-encode loses a little quality.
Why convert video to MP4? Almost every device, browser and platform plays it, so an MP4 almost never needs a second conversion.
What changes when you convert WMV to MP4
- The WMV is re-encoded into MP4 at the default quality settings, so the result looks close to the original but is not bit-identical.
- WMV files can carry DRM copy protection; protected files are detected and refused, because copy protection is never removed.
Settings you can change
Before you convert WMV to MP4, you can adjust: Video codec, Rate control, Quality (CRF), Video bitrate, Resolution, Width, Height, Scale fit, Frame rate, Encoder preset, Audio codec, Audio bitrate, Trim start, Trim duration, and Remove metadata.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted MP4 file is kept for 2 hours, then deleted.
WMV to MP4: questions and answers
Does converting WMV to MP4 reduce quality?
The WMV is re-encoded into MP4 at the default quality settings, so the result looks close to the original but is not bit-identical.
What is the difference between WMV and MP4?
WMV is Microsoft's Windows Media video format. MP4 is a widely supported video container, usually holding H.264 video and AAC audio.
Can I change the settings when converting WMV to MP4?
Before you convert WMV to MP4, you can adjust: Video codec, Rate control, Quality (CRF), Video bitrate, Resolution, Width, Height, Scale fit, Frame rate, Encoder preset, Audio codec, Audio bitrate, Trim start, Trim duration, and Remove metadata.
Do I need an account to convert WMV to MP4?
No. You can convert WMV to MP4 without an account; signing in raises the file-size and daily limits.
How long is my converted MP4 file kept?
The MP4 file you convert from WMV is kept for 2 hours, then deleted automatically.
What happens if my WMV file is copy-protected?
WMV files can carry DRM copy protection; protected files are detected and refused, because copy protection is never removed.
When I convert WMV to MP4, is the video re-encoded?
The WMV is re-encoded into MP4 at the default quality settings, so the result looks close to the original but is not bit-identical.