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Welcome to the Full DVD Ripper Knowledge Base.
This section provides information to help you to understand each commonly used
video format so that you can be a Full DVD Ripper expert in no time!

MP4 is an abbreviation for Moving Picture Expert Group-4., the official filename extension is .mp4, thus the container format is often referred to simply as MP4.It is most commonly used to store digital video and digital audio streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images. Like most modern container formats, MPEG-4 Part 14 allows streaming over the Internet. Some devices advertised as "MP4 players" are simply MP3 players that also play AMV video or some other video format, and do not necessarily play the MPEG-4 part 14 format.

MPEG-4 is a Moving Picture Expert Group standard that can be used for Internet, broadcast, and on storage media. Absorbing many of the features of MPEG-1 and MPEG-2 and other related standards, MPEG-4 added new features such as (extended) VRML support for 3D rendering, object-oriented composite files (including audio, video and VRML objects), support for externally-specified Digital Rights Management and various types of interactivity. It has recently been adopted into a number of company products, including for example the PlayStation Portable, iPod, the Nero Digital product suite, Mac OS X v10.4, as well as HD DVD and Blu-ray discs.

WMV The Windows Media Video codec (.wmv) is a subset of Microsoft's Advanced Systems Format (ASF) container format. WMV is fit for network brocast and transmission, because on even ground of the video quality, WMV has smaller volume. Through standardization from the Society of Motion Picture and Television Engineers (SMPTE), WMV 9 has gained adoption for physical-delivery formats such as HD DVD and Blu-ray Disc

3GP stands for third generation, defined by the Third Generation Partnership Project (3GPP) for 3G UMTS multimedia services, a generic wireless industry term for high-speed mobile data delivery over cellular networks. 3GP is a required file format for video and associated speech/audio media types and timed text in ETSI 3GPP technical specifications for IP Multimedia Subsystem (IMS), Multimedia Messaging Service (MMS), Multimedia Broadcast/Multicast Service (MBMS) and Transparent end-to-end Packet-switched Streaming Service (PSS).

FLV is a "Flash Live Video" file. It is a format that is designed for web playback, offering high rates of compression. Flash source files (.FLA) and deployed files (.SWF) are playable by the Flash Player. Due to the small file size and the fast loading speed, FLV make watching video on-line become possible. FLV is the most fast-growing and widespread-use video dissemination format, which is widely adopted by many video sharing websites. Notable users of FLV include YouTube, Google Video, Reuters.com, Yahoo! Video, as well as many television news operations.

DVD stands for Digital Versatile/Video Disc. It is acknowledged as a new generation of standard disc media storage technology. It's commonly used to store video and data. Compared to the compact discs (CDs) with same dimensions, most DVDs store more than six times as much data. DVD-Video and DVD-Audio discs refer to properly formatted and structured video and audio content, respectively. Other types of DVDs, including those with video content, may be referred to as DVD Data discs.

AVI means Audio Video Interleave, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows technology. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback.
The AVI file type is primarily associated with 'Audio Video Interleave File'. Recent files might be compressed with one or another codes (like DivX and XviD). It can also be seen with VLC Player, MPlayer, The KMPlayer and QuickTime.
AVI uses lossy compression method for video files, so visual quality is not very good. But due to the high compression ratio, it is widespread used.

VOB is the extension of the files contained in DVD-Video media. It is based on MPEG-2 format and mainly used to store all the audio and video data in MPEG-2 format. The datum includes the movie itself, the frame for menu and push buttons, and several picture streams of the subtitle's branches as well.
If the VOB file extension is changed from .vob to an MPEG-2 type file extension such as .mpg or .mpeg, the file is still readable and maintains to keep all the information, although most MPEG-2-capable players don't support subtitle tracks.

iPhone is a smart phone made by Apple that combines an iPod, a tablet PC, a digital camera and a cellular phone. The device includes Internet browsing and networking capabilities.
There have been four generations of iPhone hardware, and they have been accompanied by four major releases of iOS (formerly iPhone OS). The original iPhone established design precedents like screen size and button placement that have persisted through all models. The iPhone 3G brought 3G cellular network capabilities and A-GPS location. The iPhone 3GS brought a compass, faster processor, and higher resolution camera, including video. The iPhone 4 has two cameras for FaceTime video calling and a higher resolution display. It was released on June 24, 2010 in certain countries and is in the process of being released worldwide.

iPad is a tablet computer designed and developed by Apple. It is particularly marketed as a platform for audio and visual media such as books, periodicals, movies, music, and games, as well as web content. At about 700 grams (25 ounces), its size and weight are between those of most contemporary smart phones and laptop computers. Apple released the iPad in April 2010, and sold 3 million of the devices in 80 days.

PSP is short for PlayStation Portable, was developed in the U.S. in 2005 by the Sony Computer Entertainment Company. It soon became a highly desirable, portable and handheld wireless device for multiple entertainment purposes. A one-time fee to TiVo ToGo allows users to watch television and save the data to a memory device. The "Location Free" option allows TV to be watched anywhere in the world on the PSP device.
The PSP system allows users to view photos, listen to music, watch pre-recorded and live television, enjoy movies and backstage footage, access the Internet through a wireless connection, as well as the many free downloads available through the PlayStation website (wallpaper, movie trailers, screenshots, news & events).

Zune is an entertainment platform and portable media player made by Microsoft. The Zune entertainment software platform and supporting products designed and marketed by Microsoft include the Zune Software, the video component of Xbox 360, Zune devices, Microsoft Kin Phones, Windows Phone 7 devices, and the Zune website. The Zune software is used to manage the Zune, and runs exclusively on Windows. It can rip CDs, manage music and access Zune Marketplace. Purchasing media through Zune requires Microsoft Points, but a subscription model, Zune Pass, is also available. Subject to restrictions, files can be shared wirelessly between Zune devices. Zune's primary competitor is the Apple iPod product line.

BlackBerry is a handheld wireless device created by Research in Motion (RIM). BlackBerries read email and calendars from enterprise-class email systems, such as Indiana University's Exchange service, and most models also function as cell phones. BlackBerries come with complete alphanumeric keyboards, whereas many PDAs do not.

iPod is a portable device for storing and playing audio files encoded by MP3 or AAC compression algorithms. Designed by Apple Computer, iPods have distinctive styling and can hold anywhere from a few hundred to ten thousand songs.
In addition to playing MP3 audio files, the iPod plays AAC. AAC, or Advanced Audio Coding, was developed by Dolby Labs as part of the MPEG-4 audio/video standard. While technically advanced as a compression algorithm, AAC's principle difference from MP3 is its ability to support Digital Rights Management (DRM). DRM is a response to the type of song sharing first enabled by websites like Napster. By encoding legally purchased songs with digital signatures, it increases the difficulty of sharing them inappropriately.