Что такое формат файла WMV?
.wmv stands for Windows Media Video, a compressed video format developed by Microsoft Corporation for streaming applications online. The file format is built on the ASF container (Advanced Systems Format), which bundles video, audio, and metadata into a single binary file.
The .wmv format is useful for compressing video: it enables larger files to be converted into smaller-sized files and still protects the video quality within the file. This is useful in keeping the size of the file manageable without significantly affecting its picture quality. When a .wmv file is played back, the video data is decompressed on the fly by the player using the appropriate WMV codec.
The format supports a codec family spanning WMV 7 through WMV 9, with the final iteration - VC-1 - later ratified as SMPTE 421M in 2006. Audio inside a .wmv file is typically encoded as .wma (Windows Media Audio). Protected copies may carry Windows Media DRM or PlayReady encryption.
.wmv was widely used for video distributed through Windows-era streaming services and remains common in recordings produced by older Windows tools and some screen recorders. Modern distribution has largely shifted to .mp4 (H.264/H.265), but .wmv files still play natively on Windows and via VLC on other platforms.
Безопасность и защита
РИСК: LOWA WMV is a media file, not executable code, so a genuine WMV is safe to play. Two real cautions: (1) historically, malicious WMV/ASF files abused embedded "script commands" and DRM license-acquisition URLs to pop up browser windows or push fake "codec" downloads - so decline any prompt to download a special codec to play a WMV, and keep your player updated; (2) online WMV-to-MP4 converters upload your video to a third party - use a local tool (VLC/ HandBrake/ffmpeg) for private footage. DRM-protected WMV simply won't play/convert without a license, which is a restriction, not malware.
Детали формата
в двух словахПОЛНОЕ НАЗВАНИЕWindows Media Videoтакже известен как WMV file, ASF/WMV
РАЗРАБОТЧИКMicrosoftс 1999 (Windows Media Video 7, on the ASF container)
КАТЕГОРИЯВидеофайлы
MIME-ТИПvideo/x-ms-wmv
ТИПASF (Advanced Systems Format) container holding WMV-codec video (binary)
MAGIC BYTES · СИГНАТУРА ФАЙЛА
СМЕЩЕНИЕ
000102030405060708090a0b0c0d0e0f
HEX
3026B2758E66CF11A6D900AA0062CE6C
ASCII
0&·u·f·······b·l
A .wmv is an ASF container; the file starts with the 16-byte ASF Header Object GUID 30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C. The same GUID also begins .asf and .wma files - the extension (and the codec/streams inside) distinguishes WMV (video) from WMA (audio-only) and generic ASF. So the magic identifies ASF, not WMV specifically.
Программы, открывающие файлы WMV
Windows2 apps
VLC media player
Открытый код Drag the WMV onto VLC; plays it regardless of codec and reports DRM if the file is protected. 
Media Player (Windows 11)
Встроенная Double-click the .wmv - the built-in Media Player (formerly 'Films & TV', and classic Windows Media Player) plays WMV natively. 
macOS1 app
VLC media player
Открытый код Drag the WMV onto VLC; plays it regardless of codec and reports DRM if the file is protected. 
Linux2 apps
VLC media player
Открытый код Drag the WMV onto VLC; plays it regardless of codec and reports DRM if the file is protected.
GNOME Videos / mpv
Открытый код Play the WMV with the desktop's default player once GStreamer codecs are installed. 
Android1 app
VLC for Android
Открытый код Open the WMV in VLC; Android doesn't play WMV natively, so VLC is the simplest option.
iOS1 app
Технические подробности
глубокая спецификация| Container format | ASF (Advanced Systems Format) - same binary container shared with .asf and .wma files |
| MIME type | video/x-ms-wmv (also video/x-ms-asf, application/vnd.ms-asf) |
| File signature (magic bytes) | 30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C at offset 0 (16-byte ASF Header Object GUID) |
| Byte order | Little-endian |
| Video codec family | WMV 7 (WMV1), WMV 8 (WMV2), WMV 9 (WMV3), VC-1 Advanced Profile (WVC1) |
| Audio codec | Windows Media Audio (WMA), typically sampled up to 48 kHz |
| Color encoding | 4:2:0 YUV, 8-bit per channel (standard for all WMV codec generations) |
| Compression | Lossy; DCT-based motion-compensated coding in WMV 7-9; extended hybrid transform in VC-1 |
| DRM / encryption | Optional Windows Media DRM or PlayReady encryption on protected files |
| File structure | ASF Header Object (stream properties, codec list, metadata) → Data Object (interleaved media packets) → optional Index Object for seeking |
| Maximum resolution | VC-1 supports up to ~4096×4096 px in its profiles; commonly used at SD (480p) and HD (720p/1080p) |
| Typical file size | 5 MB - 2 GB, depending on duration and target bitrate |
| Alternate extensions | .asf (generic ASF container), .wma (audio-only ASF), .wm (Windows Media shortcut) |
| Codec standardization | WMV 9 codec submitted to SMPTE and ratified as VC-1 (SMPTE 421M) in 2006 |
| Выпущен | 1999 (Windows Media Video 7, on the ASF container) |
| Последняя версия | WMV 9 / VC-1 (SMPTE 421M, 2006) |
| Спецификация | learn.microsoft.com |
Конвертации WMV
Возможно
.WMV .AVIРУКОВОДСТВО
Да - WMV можно конвертировать в AVI с помощью бесплатных инструментов, но каждая конвертация - это полное…
Как конвертировать
.WMV .MKVРУКОВОДСТВО
Да - WMV конвертируется в MKV бесплатно с помощью нашего онлайн-конвертера, HandBrake или FFmpeg.
Как конвертировать
.WMV .MP4РУКОВОДСТВО
Да - WMV чисто конвертируется в MP4 с помощью HandBrake, VLC или ffmpeg, все они бесплатны.
Как конвертировать
.WMV .MOVРУКОВОДСТВО
Yes - WMV converts to MOV with free tools, though conversion always involves a full re-encode with minor…
Как конвертировать
.WMV .WMAРУКОВОДСТВО
Yes - most WMV files already contain a WMA audio track that can be extracted without re-encoding, keeping…
Как конвертировать
.WMV .MP3РУКОВОДСТВО
Yes - WMV stores video with a WMA audio track; any free converter strips the video and re-encodes the audio…
Как конвертировать
.WMV .GIFРУКОВОДСТВО
Да - FFmpeg является самым быстрым бесплатным вариантом и работает на Windows, macOS и Linux.
Как конвертировать
Вопросы и ответы сообщества
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Часто задаваемые вопросы
How do I open a WMV file?
On Windows just double-click it - the built-in Media Player plays WMV. On Mac, Linux, Android or iOS, install the free VLC media player, which plays WMV everywhere.
How do I play a WMV on a Mac?
Use VLC. Modern macOS QuickTime can't play WMV (the old Flip4Mac/Windows Media plugin is discontinued), so VLC is the simplest, free way to open Windows Media on a Mac.
How do I convert WMV to MP4?
Use HandBrake (free, choose the MP4 preset), VLC (Media > Convert/Save), or ffmpeg. It re-encodes the video to H.264. DRM-protected WMV files can't be converted.
Why won't my WMV file play?
Usually it's DRM-protected (a license is required) or uses an uncommon codec. Open it in VLC, which reports DRM and includes its own codecs; if it's DRM-locked, only an authorized player with the license can play it.
What's the difference between WMV and WMA?
Both use Microsoft's ASF container. WMV carries video (plus audio); WMA is audio-only. That's why they share the same file signature but are different file types.
Is WMV better than MP4?
MP4 (H.264) is far more compatible today - it plays on every phone, browser and editor, while WMV is largely Windows-centric and aging. Convert WMV to MP4 for the widest compatibility.
Ссылки
1Microsoft - Overview of the ASF formatlearn.microsoft.com
2VideoLAN - VLC media playerwww.videolan.org
