Расширение файлов windows media

From Wikipedia, the free encyclopedia

Windows Media Video (WMV) is a series of video codecs and their corresponding video coding formats developed by Microsoft. It is part of the Windows Media framework. WMV consists of three distinct codecs: the original video compression technology, known as WMV, originally designed for Internet streaming applications as a competitor to RealVideo, and WMV Screen and WMV Image compression technologies, which cater to specialized content. After standardization by the Society of Motion Picture and Television Engineers (SMPTE),^[1][2] WMV version 9 was adapted for physical-delivery formats such as HD DVD and Blu-ray Disc and became known as VC-1.^[3][4] Microsoft also developed a digital container format called Advanced Systems Format to store video encoded by Windows Media Video.

In 2003, Microsoft drafted a video compression specification based on its WMV 9 format and submitted it to SMPTE for standardization. The standard was officially approved in March 2006 as SMPTE 421M, better known as VC-1, thus making the WMV 9 format an open standard. VC-1 became one of the three video formats for the Blu-ray video disc, along with H.262/MPEG-2 Part 2 and H.264/MPEG-4 AVC.^[3][4]

A WMV file uses the Advanced Systems Format (ASF) container format to encapsulate the encoded multimedia content. While the ASF can encapsulate multimedia in other encodings than those the WMV file standard specifies, those ASF files should use the .asf file extension and not the .wmv file extension.^{[5][failed verification]}

The ASF container can optionally support digital rights management using a combination of elliptic curve cryptography key exchange, DES block cipher, a custom block cipher, RC4 stream cipher and the SHA-1 hashing function.

Although WMV is generally packed into the ASF container format, it can also be put into the Matroska^[6] container format (with file extension .mkv), or AVI container format (extension .avi). One common way to store WMV in an AVI file is to use the WMV 9 Video Compression Manager (VCM) codec implementation.^[7][8]

Windows Media Video (WMV) is the most recognized video compression format within the WMV family. Usage of the term WMV often refers to the Microsoft Windows Media Video format only. Its main competitors are MPEG-4 AVC, AVS, RealVideo, and MPEG-4 ASP. The first version of the format, WMV 7, was introduced in 1999, and was built upon Microsoft’s implementation of MPEG-4 Part 2.^[9] Continued proprietary development led to newer versions of the format, but the bit stream syntax was not frozen until WMV 9.^[10] While all versions of WMV support variable bit rate, average bit rate, and constant bit rate, WMV 9 introduced several important features including native support for interlaced video, non-square pixels, and frame interpolation.^[11] WMV 9 also introduced a new profile titled Windows Media Video 9 Professional,^[12] which is activated automatically whenever the video resolution exceeds 300,000 pixels (e.g., 528 px × 576 px, 640 px × 480 px or 768 px × 432 px and beyond) and the bitrate 1 Mbit/s^{[citation needed]}. It is targeted towards high-definition video content, at resolutions such as 720p and 1080p.

The Simple and Main profile levels in WMV 9 are compliant with the same profile levels in the VC-1 specification.^[13] The Advanced Profile in VC-1 is implemented in a new WMV format called Windows Media Video 9 Advanced Profile. It improves compression efficiency for interlaced content and is made transport-independent, making it able to be encapsulated in an MPEG transport stream or RTP packet format. The format is not compatible with previous WMV 9 formats, however.^[14]

WMV is a mandatory video format for PlaysForSure-certified online stores and devices, as well as Portable Media Center devices. The Microsoft Zune, Xbox 360, Windows Mobile-powered devices with Windows Media Player, as well as many uncertified devices, support the format.^[15] WMV HD mandates the use of WMV 9 for its certification program, at quality levels specified by Microsoft.^[16] WMV used to be the only supported video format for the Microsoft Silverlight platform, but the H.264 format is now also supported starting with version 3.^[17]

Windows Media Video Screen (WMV Screen) are video formats that specialise in screencast content. They can capture live screen content, or convert video from third-party screen-capture programs into WMV 9 Screen files. They work best when the source material is mainly static and contains a small color palette.^[18]

One of the uses for the format is computer step-by-step demonstration videos. The first version of the format was WMV 7 Screen. The second version, WMV 9 Screen, supports VBR encoding in addition to CBR.^[18] Additionally there is MSA1 (aka “MS ATC Screen codec” or “MSS3”) which is used in Live Meeting 2007. FourCCs for the formats are MSS1, MSS2 and MSA1.^[19]

Windows Media Video Image (WMV Image) is a video slideshow format. The format works by applying timing, panning and transition effects to a series of images during playback.^[20] The codec achieves a higher compression ratio and image quality than WMV 9 for still images as files encoded with WMV Image store static images rather than full-motion video.

Since the format relies on the decoder (player) to generate video frames in real-time, playing WMV Image files even at moderate resolutions (e.g. 30 frames per second at 1024 px × 768 px resolution) requires heavy computer processing. The latest version of the format, WMV 9.1 Image, used by Photo Story 3, features additional transformation effects, but is not compatible with the original WMV 9 Image format.^[20]

Hardware support for WMV Image is available from Portable Media Centers, Windows Mobile-powered devices with Windows Media Player 10 Mobile.^[15]

Since no known domestic DVD player supports this format, users of Photo Story 3 wishing to generate material capable of being played in a DVD player will first have to convert to MPEG-2 before burning a DVD (average file sizes in MPEG-2 are 5 to 6 times the .wmv file).

The audio format used in conjunction with Windows Media Video is typically some version of Windows Media Audio, or in rarer cases, the deprecated Sipro ACELP.net audio format. Microsoft recommends that ASF files containing non-Windows Media formats use the generic .ASF file extension.

Software that can play WMV files includes Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player and K-Multimedia Player. The Microsoft Zune media management software supports the WMV format, but uses a Zune-specific variation of Windows Media DRM which is used by PlaysForSure. Many third-party players exist for various platforms such as Linux that use the FFmpeg implementation of the WMV format.

On the Macintosh platform, Microsoft released a PowerPC version of Windows Media Player for Mac OS X in 2003,^[23] but further development of the software ceased. From January 2006 to May 2014, Microsoft endorsed and distributed the 3rd party Flip4Mac, a QuickTime Component developed by Telestream that allowed Macintosh users to play WMV files in any player that used the QuickTime framework.^[24][25] Telestream ended sales of Flip4Mac on 1 July 2019 and officially ended support on 28 June 2020.^[26] The Elmedia player, which can play WMV files on Macintosh computers, is still available.

Many programs can export video in WMV format; a few examples are Windows Movie Maker, Windows Media Encoder, Microsoft Expression Encoder, Sorenson Squeeze,^[27] Vegas Pro,^[28] AVS Video Editor, VSDC Free Video Editor, Telestream Episode, Telestream FlipFactory,^[29][30] and FFmpeg.

Programs that encode using the WMV Image format include Windows Media Encoder, AVS Video Editor, and Photo Story.

While none of the WMV formats themselves contain any digital rights management facilities, the ASF container format, in which a WMV stream may be encapsulated, can. Windows Media DRM, which can be used in conjunction with WMV, supports time-limited subscription video services such as those offered by CinemaNow.^[31] Windows Media DRM, a component of PlaysForSure and Windows Media Connect, is supported on many modern portable video devices and streaming media clients such as the Xbox 360.

WMV has been the subject of numerous complaints from users and the press. Users dislike the digital rights management system which is sometimes attached to WMV files.^[32] In 2007, the loss of the ability to restore licenses for WMV files in the Windows Media Player 11 was not positively received.^[32]

• JPEG XR/HDHD, an image file format and format developed by Microsoft

• Description of the algorithm used for Windows Media encryption Archived 2013-02-10 at the Wayback Machine
• Demonstration of WMV 9 delivering 720p video at 1.8 Mbit/s ABR Archived 2010-03-22 at the Wayback Machine
• Demonstration of WMV 9 delivering 1080p video at 10 Mbit/s ABR
• History of Windows Media Player (archived 2009)

Получили файл WMV, но не можете напрямую открыть его с помощью QuickTime Player на Mac? Хотите узнать больше о Файл WMV?

Файл с расширением WMV — это файл Windows Media Video. Он совместим с системой Windows и проигрывателем Windows Media. Это распространенный формат, используемый для хранения видео в Windows. Но формат WMV не открывается на Mac. Это один из видов неподдерживаемого формата для Mac и его QuickTime Player. Если вы хотите воспроизвести видео WMV на Mac, вам придется полагаться на какой-то сторонний проигрыватель или конвертировать WMV в MOV или MP4 для воспроизведения.

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Что такое файл WMV? Как открыть видео в формате WMV? В этом посте мы хотели бы дать вам подробное представление о формате WMV. Вы можете узнать о нем больше информации и лучше использовать его на своем компьютере или портативном устройстве.

Часть 1. Что такое файл WMV

WMV, сокращение от Windows Media Video, представляет собой видеофайл, основанный на формате контейнера Microsoft Advanced Systems Format (ASF). Он сжат с помощью сжатия Windows Media. Формат WMV в основном используется в среде Windows Media. Файл WMV лучше всего подходит для потоковых интернет-приложений или продажи контента через диски HD DVD и Blu-ray.

Файл WMV может хранить изображения, аудио, текст и видео данные. Поскольку дополнительная функция управления цифровыми правами, WMV предотвращает копирование данных из этого формата. Он может переносить большой объем видео- и аудиоинформации в небольшом объеме памяти. Это делает WMV хорошим форматом для потокового видео в Интернете.

Microsoft однажды принесла Windows Media Player 9 для воспроизведения WMV в Mac OS X / 11/12. Но это последняя версия проигрывателя Windows Media для пользователей Mac, позволяющая напрямую открывать файл WMV. Если вы используете Mac с более поздней версией, вам не разрешено открывать его с помощью проигрывателя Windows Media или QuickTime Player.

Вы также можете увидеть файл с расширением WMA. Аудиофайл Windows Media похож на WMV, но содержит только аудиоданные.

WMV против MP4 — основные различия между WMV и MP4

WMV (Windows Media Video) — это формат сжатия видео, созданный Microsoft. Он в основном используется для компьютеров с Windows и связанных с ними продуктов. Вы можете легко открыть файл WMV через Microsoft Windows Media Player и другие популярные медиаплееры.

MP4 — один из самых популярных видеоформатов, который поддерживается практически всеми устройствами, операционными системами, редакторами и медиаплеерами. Если вы хотите заняться редактированием, загрузкой или загрузкой видео, MP4, без сомнения, лучший формат.

Одним из больших преимуществ WMV является размер файла. Файл WMV обычно меньше аналогичного файла MP4 и требует меньше ресурсов на вашем устройстве. Поэтому WMV — один из видов идеального формата для обмена в Интернете, отправки по электронной почте или через социальные сети.

По сравнению с WMV, MP4 может поддерживаться большим количеством систем и устройств. Он поддерживает Windows, Android и все продукты Apple. Хотя размер его файла больше, чем у файла WMV.

Часть 2. Как открыть файл WMV

Пользователь Windows может напрямую открыть файл WMV с помощью проигрывателя Windows Media. Но формат WMV не поддерживается на Mac, большинстве телефонов Android и всех устройствах iOS, таких как iPhone и iPad. Итак, как воспроизвести видео WMV на этих устройствах?

Если вы хотите открыть файл WMV на Mac, вам придется полагаться на какой-то сторонний плеер. Здесь мы настоятельно рекомендуем мощное программное обеспечение для воспроизведения WMV, Mac Blu-ray Player для тебя. Он имеет возможность воспроизводить различные медиафайлы в любом часто используемом видео- и аудиоформате, таком как WMV, MP4, MOV, AVI, FLV, MTS, M2TS, TS, MKV, MXF, AAC, MP3, M4A, FLAC и многое другое. Как профессиональный проигрыватель Blu-ray, он также позволяет вам наслаждаться фильмами Blu-ray с великолепным изображением и звуком.

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Этот проигрыватель WMV для Mac позволяет воспроизводить видео 720p / 1080p HD и 4K UHD с высоким качеством. Он также поддерживает объемный звук 5.1 (Dolby Digital, DTS), чтобы обеспечить хорошее качество звука. Вы можете бесплатно скачать его и с легкостью воспроизводить все виды мультимедийных файлов на своем Mac.

Когда ты хочешь воспроизвести файл WMV на iPhone, iPad, телефон или планшет Android, вам нужно полагаться на приложение проигрывателя WMV. Вы можете легко получить доступ к хорошему проигрывателю WMV в App Store и Google Play Store.

Часть 3. Как конвертировать видео WMV в MP4 или MOV

По разным причинам вам нужно конвертировать WMV в MP4, MOV или другой формат. Вы знаете, как конвертировать WMV?

Если вы хотите преобразовать файл WMV, вы можете использовать профессиональное программное обеспечение для преобразования WMV, Video Converter Ultimate. Он специально разработан для различных преобразований видео и аудио. Он может конвертировать WMV в MP4, сохраняя исходное качество изображения и звука. Он поддерживает любые популярные видео и аудио форматы, включая WMV, MOV, FLV, MP4, AVI, MKV, MTS, MP3 и другие.

• 1. Video Converter Ultimate — это профессиональный видео- и аудиоконвертер, который может конвертировать WMV в MOV, MP4 или другие форматы без потери качества.
• 2. Поддержка видео 4K, 1080p HD и SD в любом популярном формате, таком как MP4, AVI, FLV, MOV и т. Д.
• 3. Мощные функции редактирования, такие как обрезка, обрезка, поворот, водяной знак, 3D, настройка эффектов и многое другое.
• 4. Копируйте DVD-диск в папку DVD, файл ISO или видео / аудиоформат и конвертируйте 2D в 3D.

Шаг 1: Бесплатно скачайте, установите и запустите этот конвертер WMV на свой компьютер. Он позволяет конвертировать файлы WMV как на Mac, так и на ПК с Windows.

Шаг 2: Выбрать конвертер функция для преобразования видео в WMV. Нажмите Добавить файлы , чтобы добавить видео в формате WMV, которое вы хотите преобразовать.

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Шаг 3: Щелкните значок формата справа от видео, а затем выберите MP4 или MOV в качестве целевого формата.

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Шаг 4: Нажмите Конвертировать все кнопку, чтобы начать конвертацию файла WMV на вашем компьютере. Благодаря внедрению передовой технологии ускорения, вы можете завершить преобразование WMV на сверхбыстрой скорости.

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Часть 4. Часто задаваемые вопросы по файлу WMV

Заключение

Прочитав этот пост, надеюсь, вы сможете узнать больше о Формат WMV. Вы можете получить четкое представление о файле WMV и лучше его использовать. Если у вас есть дополнительные вопросы о воспроизведении или преобразовании WMV, вы можете оставить нам сообщение.

This article raised by MiniTool Software Limited mainly discusses the Windows multimedia codecs. It elaborates on the supported file formats by Windows Media Player and Windows Movies & TV app; how to identify the codec of a file; how to play Windows unsupported media files…

In general, a codec is a way to compress or decompress media files like video or music. It includes 2 parts, an encoder that compresses the media file (encoding) and a decoder that decompresses the media file (decoding).

Some codecs contain both parts while others only have either an encoder or a decoder. Windows Media Player and other applications take advantage of codecs to play and create media files.

The following are the file types compatible with Windows Media Player 12.

• Windows Media formats (.asf, .wma, .wmv, .wm)
• Windows Media Metafiles (.asx, .wax, .wvx, .wmx, wpl)
• Microsoft Digital Video Recording (.dvr-ms)
• Windows Media Download Package (.wmd)
• Audio Visual Interleave (.avi)
• Moving Pictures Experts Group (.mpg, .mpeg, .m1v, .mp2, .mp3, .mpa, .mpe, .m3u)
• Musical Instrument Digital Interface (.mid, .midi, .rmi)
• Audio Interchange File Format (.aif, .aifc, .aiff)
• Sun Microsystems and NeXT (.au, .snd)
• Audio for Windows (.wav)
• CD Audio Track (.cda)
• Indeo Video Technology (.ivf)
• Windows Media Player Skins (.wmz, .wms)
• QuickTime Movie file (.mov)
• MP4 Audio file (.m4a)
• MP4 Video file (.mp4, .m4v, .mp4v, .3g2, .3gp2, .3gp, .3gpp)
• Windows audio file (.aac, .adt, .adts)
• MPEG-2 TS Video file (.m2ts)
• Free Lossless Audio Codec (.flac)

Windows 10/11 Movies & TV Supported Formats

Below are the media file formats supported by Windows Movies & TV app.

• m4v
• .mp4
• .mov
• .asf
• .avi
• .wmv
• .m2ts
• .3g2
• .3gp2
• .3gpp

Windows Media Player contains some of the most popular codecs including MP3, Windows Media Audio (WMA), and Windows Media Video (WMV). Yet, it does not contain the codecs needed for Blu-ray Disc files, FLAC files, or FLV files. If some files can’t be played in Windows Media Player, you may consider that there isn’t the right codec on your computer. To deal with that situation, you have to search online, download the corresponding codec pack, and install it on your PC.

How to Find Which Codecs Does Your Computer Install?

This guide teaches you the way to find out which codecs are installed on your PC.

1. Open Windows Media Player.
2. Go to Help > About Windows Media Player. If you can’t see the Help menu, select Organize > Layout > Show menu bar.
3. In the About Windows Media Player popup, click on the Technical Support Information option.
4. Then, your browser will open a local web page (file:///C:/Users/username/AppData/Local/Temp/wmpsupport.htm) showing the details of Windows Media Player including operating system, media player binaries, audio codecs, video codecs, etc. You may need to choose a browser to display that information.

Which Codecs Are Included with the Player?

Among the many audio and video codecs used today, some were created by Microsoft and most others were designed by other companies or individuals. By default, the Microsoft Windows operating system (OS) and the Windows Media Player consist most popular codecs like the above-mentioned MP3, Windows Media Audio, and Windows Media Video.

However, it is possible that the file you want to play was compressed by a codec that are not included by Windows OS or the Player. If so, usually, you can download the involving codec online either for free or for a fee. In some situations, Windows Media Player can make use of the codecs installed by other digital media playback and creation programs automatically on your device.

Another way to solve that problem is to convert the target media file’s codec to the Windows Media Player-supported media codec. To achieve that, you need to rely on a professional and reliable media file conversion software like MiniTool Video Converter.

MiniTool Video ConverterClick to Download100%Clean & Safe

1. Download, install, and launch MiniTool Video Converter on your Windows computer.

2. In the default Converting subtab under the Video Convert tab, click the Add or Drag files here to start conversion to add the target media file.

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3. In the Target section of the file conversion list, click the settings icon (a square with an arrow pointing inside).

4. In the new window, switch to the right tab from the top menu bar. For example, if the media file is a video, you need to select the Video tab.

5. Then, select one file format supported by Windows Media Player from the left panel.

6. You can further choose quality for the selected file format. Besides, you can click the settings icon behind each quality option to specify more specifications. Or, just click the Create Custom option at the bottom right to create a customized video/audio quality standard.

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7. In the new popup, you are able to personalize the quality standard, video encoder, resolution, frame rate, video bitrate, audio encoder, sample rate, channel, audio bitrate, etc.

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8. Click the Create button to save changes.

9. Select the customized media file format standard and click the Convert button to start the process.

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Wait for it to complete. It will only take a few seconds depending on the target file format you choose and how large your source file is. MiniTool Video Converter supports batch conversion and you can convert up to 5 files to the same or different target file formats. Most importantly, all the conversions are completely free of charge!

Sometimes, you may get a message saying that your computer is missing a codec. It may due to you are trying to play, burn, or sync a media file that was compressed by using a codec that Windows or the Media Player does not include by default. In such a situation, you also need the above solutions to fix the issue.

Windows Media Player Alternatives

If Windows Media Player can’t play the target file and the above solutions can’t help either, you can use one of the Player’s replacements to play the file. There are many alternatives to Media Player, including but not limited to Microsoft Movies & TV, VLC Media Player, MPC-HC, Foobar2000, and MediaMonkey.

How to Find a Codec?

If you know the name or ID (known as a FourCC identifier for video codecs or a WaveFormat identifier for audio codecs) of the codec, you can directly search the codec with them. Or, you can visit the official website of the codec manufacturer to download the newest version.

If you don’t know either the name or the ID of the missing codec, you can figure out which codec is used to compress the target file using the following method.

Firstly, you can play the file with Windows Media Player if possible.

1. While playing, right-click on the file in the library and choose Properties.
2. In the Properties window, go to the File tab.
3. Under the File tab, check the Audio codec and Video codec of the file.

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Alternatively, you can play the target media file with other players and view its properties for codec information if Windows Media Player fails to play the file.

Secondly, you can rely on a codec identification tool to help you recognize the audio or video codec of the target file.

Besides, you may know the format of a file by checking the file name extension like .wma (Windows Media Audio format), .wmv (Windows Media Video format), .mp3, or .avi. Yet, many apps create files with custom file extensions and anyone can rename a file together with its extension without changing the file format.

Moreover, sometimes, even if you have already installed the missing codec, you still cannot play the target file. It may be due to that you have installed the wrong bit of codec. Codecs can be written for 32-bit or 64-bit operating systems. If you install a 32-bit codec on your 64-bit OS, it won’t work. Many older codecs are only available in 32-bit. If the codec provider doesn’t specify the bit of the codec, it tends to be 32-bit.

HEVC Codec Windows 10/11

By default, Windows doesn’t have the HEVC codec included. So, it doesn’t support HEVC-encoded files. Yet, just as mentioned above, you can download and install the HEVC codec pack on your computer and enable Windows Media Player or Movies & TV to play the HEVC file.

You can search for HEVC in Microsoft Store. Within the numerous search results, you can find HEVC video codec packs, HEVC video players, HEVC video extensions, HEVC video converters, etc. Thus, you have several choices:

• Install the HEVC codec pack and play the HEVC file with a Windows built-in media player.
• Download and install an HEVC player to open the media file.
• Add an HEVC video extension to play HEVC files.
• Convert HEVC file to a Windows-supported format by HEVC converter.

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The above-mentioned MiniTool Video Converter is one of the recommended HEVC video converters and codec tweak tools that supports to convert HEVC/H265 video formats to Windows Media Player supported codecs as well as other file formats containing MKV, XVID, DV, VOB, WEBM, OGV, DIVX, MXF, TS, FLV, F4V, SWF, and AVC/H264.

As for the HEVC video player, you can make use of MiniTool MovieMaker to view the content of the HEVC file. MiniTool MovieMaker is an easy-to-use video editor to turn your videos, photos, and music into a beautiful video with its built-in transitions, effects, texts, motions, as well as funny elements.

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Conclusion

That is all about codecs for Windows 10 and most of the information in this article also applies to Windows 11. If you have anything special to share with our readers, you can leave a comment below. If you encounter any problem while using MiniTool products, just contact [email protected].

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