Convert WMV to MP4
Convert any video file to MP4 format online for free. Fast, secure, and easy-to-use video to MP4 converter with no software installation required.
Drag & Drop Video File
or click below to browse
Max file size: 50 MBMax duration: 30 min
Sign up for increased limitsA free account gets you up to 50 MB and 30 min.
Why Choose Scriptivox WMV to MP4 Converter?
Fast Conversion
Our powerful servers process your files quickly, delivering converted files in seconds.
100% Free
Convert your files completely free with no hidden costs or subscription fees.
Secure & Private
Your files are encrypted and automatically deleted after conversion. We never store or share your data.
No Installation
Works directly in your web browser. No software download or installation required.
How to Use WMV → MP4
Upload File
Drag and drop your WMV file or click to browse. Supports files up to 1GB.
Convert
Select MP4 as your output format and click convert. Our servers will process your file instantly.
Download
Download your converted file instantly. The download link expires in 1 hour for security.
WMV vs MP4: format comparison
How the two formats differ on the things that change your result.
| Specification | WMV (source) | MP4 (result) |
|---|---|---|
| Container | ASF | MPEG-4 Part 14 |
| Developed by | Microsoft | MPEG |
| Introduced | 1999 | 2003 |
| Video codecs | WMV9, VC-1 | H.264, H.265, AV1 |
| Audio codecs | WMA | AAC, MP3, ALAC |
| Max resolution | Full HD (1080p) | 8K UHD |
| Typical bitrate (1080p) | 2–10 Mbps | 5–20 Mbps |
| Multiple audio tracks | No | Yes |
| Subtitle tracks | Not supported | Embedded (soft) subtitles |
| Chapter markers | No | Yes |
| Streaming optimized | Yes | Yes |
| Licensing | Proprietary | Patent-licensed |
| Plays natively on | Native: Windows · Needs a player: macOS, iOS, Android | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs |
| Best for | Windows media libraries, legacy archives | web delivery, social media uploads, sharing with anyone |
What changes when you convert WMV to MP4
This is a full transcode rather than a container swap, because WMV9 is not one of the codecs MP4 carries. Every frame is decoded and re-encoded as H.264.
This conversion buys reach. MP4 is natively supported on 5 additional platforms compared with WMV, which is usually the reason people convert in this direction.
Expect the bitrate to move from roughly 6 Mbps to about 13 Mbps at 1080p, and file size to follow.
About WMV to MP4 Conversion
Converting WMV to MP4 means moving audio out of the ASF container, introduced in 1999, and into MPEG-4 Part 14, which arrived in 2003. The two were designed with different priorities, and that is what determines whether this conversion costs you quality, storage, or compatibility.
Developed by Microsoft in 1999, WMV stores audio using WMV9, VC-1. That codec choice sets the upper bound on what any conversion can preserve.
MP4, from MPEG and dating to 2003, uses H.264, H.265, AV1 and plays natively on 6 of the six platform categories we track. That combination is usually why people convert into it.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
WMV to MP4: common questions
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