WMV to M4V
WMV to M4V Converter, Convert WMV to M4V
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Total Video Audio Converter converts WMV to M4V with high quality easily. The converter supports MPEG-4 and H.264 codecs for M4V file. With the WMV to M4V conversion software, you could set bit rate, frame rate, video size, aspect ratio, etc. By default, the software calculates bit rate for result M4V file according to original video size automatically. As large video size needs bigger bit rate.
Besides M4V, the converter converts WMV to popular formats and portable devices such as PS3, OGM, Xvid, iPhone, VOB, iPod, OGV, AVI, WebM, 3GP, and so on. The software also other video and audio formats, for example, H.263 to WebM, FLV to WMV, MPEG to FLV, DIVX to FLV, MPEG to 3G2, MKV to PS3, MKV to OGG, WMV to MOV, and so on.
WMV to M4V conversion software could convert file in batch. And, it's full compatible with 32-bit and 64-bit Windows 7.
What is WMV?
A WMV file is in most circumstances encapsulated in the Advanced Systems Format (ASF) container format. The file extension .WMV typically describes ASF files that use Windows Media Video codecs. The audio codec 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 codec. Microsoft recommends that ASF files containing non-Windows Media codecs use the generic .ASF file extension.
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 AVI or Matroska container format. The resulting files have the .AVI and .MKV file extensions, respectively. WMV can be stored in an AVI file when using the WMV 9 Video Compression Manager (VCM) codec implementation. Another common way to store WMV in an AVI file is to use the VirtualDub encoder.
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, DivX, and Xvid. 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, 640x480 or 768x432 and beyond) and the bitrate 1000 kbit/s. It is targeted towards high-definition video content, at resolutions such as 720p and 1080p.
What is M4V?
Apple uses M4V files to encode TV episodes, movies, and music videos in the iTunes Store. The copyright of M4V files may be protected by using Apple's FairPlay DRM copyright protection. To play a protected M4V file, the computer needs to be authorized (using iTunes) with the account that was used to purchase the video. However, unprotected M4V files without AC3 audio may be recognized and played by other video players by changing the file extension from '.m4v' to '.mp4'.
Besides Apple iTunes and Apple QuickTime Player, M4V files can also be opened and played with the version of Windows Media Player included with Windows 7, Media Player Classic, RealNetworks RealPlayer, VideoLAN VLC media player and Nero Showtime (included with Nero Multimedia Suite). The format, with DRM removed, can also be played in the webOS Video Player for use on the Palm Pre, Palm Pixi smartphones. It is also playable by the Android operating system with its video player. It can also be played with the BS Player Pro.
M4V video with FairPlay attached to it is read in QuickTime as AVC0 Media.
Step-by-Step Instructions to Converting WMV to M4V
Click "Add Files" to choose WMV files and add them to conversion list.
Choose one or more WMV files you want to convert and then click Open.
[Optional, for advanced user] If you want to change M4V encoding parameters, for example, vodec codec, bit rate, frame rate, video size, and aspect ratio, please click "Options".
[Optional] Switch to tab "Video & Audio" and then choose "M4V" at "Output Format", and then set encoding parameters.
Click "Convert" to convert WMV files to M4V.
The software is converting WMV to M4V.
When conversion completes, you can right-click converted item and choose "Play Destination" to play the outputted M4V file; or choose "Browse Destination Folder" to open Windows Explorer to browse the outputted M4V file.
WMV to M4V Conversion Software is 100% clean and safe to
install. It's certified by major download sites.
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