WMV

More Knowledge about WMV

Windows Media Video (WMV) is the most recognized video format within the WMV family. Usage of the term WMV often refers to the Microsoft Windows Media Video codec only. Its main competitors are MPEG-4 AVC, AVS, RealVideo, and MPEG-4 ASP. The first version of the codec, WMV 7, was introduced in 1999, and was built upon Microsoft's implementation of MPEG-4 Part 2. Continued proprietary development led to newer versions of the codec, but the bit stream syntax was not frozen until WMV 9. 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. WMV 9 also introduced a new profile titled Windows Media Video 9 Professional, which is activated automatically whenever the video resolution exceeds 300,000 pixels (e.g., 528x576, 640×480 or 768x432 and beyond) and the bitrate 1000 kbit/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. The Advanced Profile in VC-1 is implemented in a new WMV codec called Windows Media Video 9 Advanced Profile. It improves compressions 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 codec is not compatible with previous WMV 9 codecs, however.

WMV is a mandatory video codec 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 codec. WMV HD mandates the use of WMV 9 for its certification program, at quality levels specified by Microsoft. WMV used to be the only supported video codec for the Microsoft Silverlight platform, but H.264 codec is now also supported starting with version 3.

How to Convert DVD to WMV?

Believing it or not, best movie resources are still from your DVD collections. Besides watching movies on TV with DVD player, sometimes you may also want to enjoy the films with iPod, iPad, PSP, or PC players; sometimes you may want to back up a special disc; sometimes you want to upload DVD disc content to YouTube but just find only FLV files are accepted...At this moment, you do need to rip DVD to video in common formats. On the other hand, DVD discs takes some space while converting DVD to videos to store the movies on PC will save your space. Needless to say, backing up DVD disc and making DVD copy are necessary to ensure never losing those important data.

The following guide will tell you exactly how to rip and convert DVD movies to video in desired format, like ripping DVD to WMV/AVI/MP4, step by step.

First, it is necessary to install the software: DVD Converter;
Secondly, you should have a DVD disc in your driver or DVD folder in your PC;
Last, make sure your PC has enough free space in a hard disk for saving temporary files.

Step 1: Add DVD Movie to DVD Converter

Launch DVD Converter. Click button “Open DVD” to open a DVD disc (DVD-5 or DVD-9) in your driver or a DVD folder (containing VOB files) in your PC.

Step 2: Specify DVD to Video/Audio Conversion

After DVD titles are all listed in the program, you may go to General Settings or Advanced Settings panel to specify your conversion. Click the drop down arrow under "Target profile" and select a profile from the list. It lists kinds of DVD to video/audio conversion pre-sets, which are specified different dimension, bit rate, codec, file size and so on.

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Step 3: Rip DVD

Click button "Rip DVD" on the top of the tool bar to start DVD to video/audio conversion.

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