DVR-MS

Source: Wikipedia, the free encyclopedia.
Microsoft Digital Video Recording
Filename extension
.DVR-MS
Developed by
.WTV

DVR-MS (Microsoft Digital Video Recording) is a

container format, developed by Microsoft used for storing TV content recorded by Windows XP Media Center Edition, Windows Vista and Windows 7
.

Multiple data streams (audio and video) are wrapped in an

Dolby Digital AC-3 (ATSC A/52). The format extends these standards by including metadata about the content and digital rights management. Files in this format are generated from the Stream Buffer Engine (SBE.dll), a DirectShow component introduced in Windows XP Service Pack 1.[1]

Playback and editing

The

Service Pack 1 or later Windows operating systems, hotfix 810243 for Windows XP RTM (which adds DVR-MS support to DirectShow), and on Windows Mobile 6. For older Windows operating systems, any third-party media player which supports the DVR-MS format through DirectShow on Windows or by other means on Windows or other platforms can be used for playback.[citation needed
]

Although it is not possible to edit unprotected DVR-MS files through older software programs such as

MSDN) has an article with sample code and binaries demonstrating how to use DVR-MS and convert them to WMV.[4] Also, Windows Media Player 10 shipped with a transcoder to convert DVR-MS to WMV only when syncing with portable devices such as a Portable Media Center.[5]

Orb uses the DVR-MS file format for recording and streaming audio and video via its web-based DVR.[citation needed
]

Some universal transcoders may be able to convert DVR-MS to other formats. DVR-MS can also be converted to another format changing only the container format (extracting the original MPEG-2 data without any visual loss) using FFmpeg and VLC media player's transcoding wizard.[citation needed]

Phase out

Starting with Windows Media Center TV Pack 2008 and moving forward, Microsoft has indicated that DVR-MS is being replaced with the

WTV format.[6][7]

An update is available for

Windows Media Player 11 in Windows Vista to add playback support for WTV.[8] Microsoft does not, however, provide a generic DirectShow filter to enable playback support in third party DirectShow-based media players on Windows Vista or on Windows XP Media Center Edition.[citation needed
]

Windows 7 includes built-in support for converting non copy-protected WTV files to DVR-MS.[9] Third party tools also exist to convert WTV to DVR-MS such as Andy VT's ToDVRMS[10] and 3LS's ConvertWTV.[11]

References

  1. ^ "Working with WTV Files". MSDN Library. Microsoft. 2009.
  2. ^ Lanier, Chris (2007-04-07). "Why Media Center records to DVR-MS". Chris Lanier's Blog. Archived from the original on 2007-04-23.
  3. ^ Lanier, Chris (2006-08-09). "Use Windows Movie Maker To Edit DVR-MS Natively". Chris Lanier's Blog.
  4. ^ Toub, Stephen (2007-09-22). "Fun with DVR-MS".
  5. ^ Bowman, Barb (2004-04-12). "Viewing Recorded TV on a Windows Mobile-based Portable Media Center. Windows XP". Microsoft. Archived from the original on 2007-10-16.
  6. ^ Protalinski, Emil (2008-07-18). "Fiji beta over, Windows Media Center TV Pack 2008 hits RTM". ars technica.
  7. ^ Foley, Mary Jo (18 July 2008). "Microsoft Fiji beta over; final 'TV Pack' due soon". ZDNet.
  8. ^ Microsoft Support (2009-04-14). "An update is available for Windows Vista to enable Windows Media Player to recognize .wtv files as Recorded TV files". Microsoft.
  9. ^ James (2009-06-13). "How To: Easily Convert WTV Files to DVRMS Files with Windows 7". The Media Center Blog. Archived from the original on 2009-08-11.
  10. ^ "DVRMSToolbox". andy vt's tools & blog. Archived from the original on 2010-01-15. Retrieved 2010-01-04.
  11. ^ "ConvertWTV". Archived from the original on 2012-03-31.
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