What is MPEG?
MPEG is an abbreviation for a group of film turning experts , part of the International Standardization Organization (ISO) and International Electrical Engineering Commission (IEC), authorized to create and publish standards for different technologies. MPEG standards are engaged in sound and video formats used online, on television and in DVD media. Some known standards are briefly explained below.
MPEG-1 : This first set of standards has been developed for sound and video compression. Layer 3 is a codec within these standards, known simply as MP3 or popular sound compression format for music.
This video format was used to store movies on CD, known as video CD or VCD. The quality is equal to the quality of the VHS tape and playing compatibility on CD/DVD players is high. One of the disadvantages of this standard is that it only supports progressive shots, verse the inclusion of interlaced . These conditions relate to the wayThe image is painted over the screen. Progressive monitors (including progressive TVs) portray the image "from top down" gradually in a single sequence pass. The interleaved display of painting on painting each other line and then fill the odd lines in the two -term process.
MPEG-2 : This standard has improved on MPEG-1 by including the ability to encode the interlaced images. It is widely used for a digital cable, satellite and through air digital signals. This format also prevails for DVD films. TV receivers, DVD players and TV stations usually include this standard.
MPEG-2 also contains two container formats: Transport Stream and Stream . This applies to the way in which digital broadcasting is transmitted and formatted into the media, respecting.
MPEG-3 : The intention was to make thisStandard compatible with high-resolution TV (HDTV), but this has happened unnecessary when MPEG-2 expanded the ability of this standard to include HDTV. At that time, this standard was abandoned.
MPEG-4 : Lending from the first two standards, MPEG-4 extends the functionality of sound compression/video by improving the format flexibility. It supports 3D rendered objects and includes a copyright -known scheme known as Digital Rights Management (DRM) . This standard can be used for broadcasting TV, online streaming media, applications such as videoophone and distribution on digital media.
The MPEG-4 standard is developed in "works" associated with some known codecs. For example, DivX, Xvid, Nero Digital and QuickTime6 ™ are several codecs that use Part 2. Other versions of Nero Digital (AVC) and QuickTime (version 7) use Part 10 as well asx264 codec. This taste is also used by Blu-ray discs and some HD DVD types.
MPEG continues to evolve (the followingbottom numbered) standards such as MPEG-7 and MPEG-21, dedicated to multimedia content.