Convert any video file to M4V format online for free. Fast, secure, and easy-to-use video to M4V converter with no software installation required.
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Max file size: 50 MBMax duration: 30 min
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Drag and drop your WMV file or click to browse. Supports files up to 1GB.
Select M4V as your output format and click convert. Our servers will process your file instantly.
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How the two formats differ on the things that change your result.
| Specification | WMV (source) | M4V (result) |
|---|---|---|
| Container | ASF | MPEG-4 (Apple variant) |
| Developed by | Microsoft | Apple |
| Introduced | 1999 | 2005 |
| Video codecs | WMV9, VC-1 | H.264 |
| Audio codecs | WMA | AAC, AC-3 |
| Max resolution | Full HD (1080p) | 4K UHD |
| Typical bitrate (1080p) | 2–10 Mbps | 4–20 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: macOS, iOS · Needs a player: Web browsers, Windows, Android, Smart TVs |
| Best for | Windows media libraries, legacy archives | the Apple ecosystem, iTunes libraries, home theatre |
This is a full transcode rather than a container swap, because WMV9 is not one of the codecs M4V carries. Every frame is decoded and re-encoded as H.264.
This conversion buys reach. M4V is natively supported on 2 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 12 Mbps at 1080p, and file size to follow.
Converting WMV to M4V means moving audio out of the ASF container, introduced in 1999, and into MPEG-4 (Apple variant), which arrived in 2005. 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.
M4V, from Apple and dating to 2005, uses H.264 and plays natively on 2 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.
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