* H. 264 also known as MPEG-4 Part 10, or as AVC, used for Blu-ray Discs and some broadcast television formats

It was further enhanced in projects known as H. 263v2 ( also known as H. 263 + or H. 263 1998 ), MPEG-4 Part 2 and H. 263v3 ( also known as H. 263 ++ or H. 263 2000 ).

MPEG-4 Part 2 is H. 263 compatible in the sense that a basic H. 263 bitstream is correctly decoded by an MPEG-4 Video decoder.

Such schemes have also been standardized for older designs as well, such as JPEG images with progressive encoding, and MPEG-2 and MPEG-4 Part 2 video, although those prior schemes had limited success in terms of adoption into real-world common usage.

* MPEG-4 Part 2 and Part 10 ( AVC )

It was formed in 2001 and its main result has been H. 264 / MPEG-4 AVC ( MPEG-4 Part 10 ).

It is also used on Blu-ray Discs, but these normally use MPEG-4 Part 10 or SMPTE VC-1 for high-definition content.

** MPEG-4 Part 2 ( or Simple and Advanced Simple Profile ) and

** MPEG-4 AVC ( or MPEG-4 Part 10 or H. 264 ).

Advanced Audio is also defined in Part 3 of the MPEG-4 standard.

AAC ( Advanced Audio Coding ) was standardized as an adjunct to MPEG-2 ( as Part 7 ) before MPEG-4 was issued.

* Parametric Stereo, Audio Object Type defined and used in MPEG-4 Part 3 ( MPEG-4 Audio ) to further enhance efficiency in low bandwidth stereo media

The MPEG-4 Part 20 standard-Lightweight Application Scene Representation ( LASeR ) and Simple Aggregation Format ( SAF ) is based on SVG Tiny.

SVG capabilities are enhanced in MPEG-4 Part 20 with key features for mobile services, such as dynamic updates, binary encoding, state-of-art font representation.

SVG was also accommodated in MPEG-4 Part 11, in the Extensible MPEG-4 Textual ( XMT ) format-a textual representation of the MPEG-4 multimedia content using XML.

Windows Media Player 12 adds native support for H. 264 and MPEG-4 Part 2 video formats, AAC audio and 3GP, MP4 and MOV container formats.

For example, video created with a standard MPEG-4 Part 2 codec such as Xvid can be decoded ( played back ) using any other standard MPEG-4 Part 2 codec such as FFmpeg MPEG-4 or DivX Pro Codec, because they all use the same video format.

Fifth and sixth generation iPod classics, as well as third generation iPod nanos, can additionally play MPEG-4 ( H. 264 / MPEG-4 AVC ) and QuickTime video formats, with restrictions on video dimensions, encoding techniques and data-rates .< ref > The restrictions vary from generation to generation ; for the earliest video iPods, video is required to be Baseline Profile ( BP ), up to Level 1. 3, meaning most significantly no B-frames ( BP ), a maximum bitrate of 768 kb / s ( BP Level 1. 3 ), and a maximum framerate of 30 frame / s at 320 × 240 resolution.

* Error Resilience, an audio coding method used in MPEG-4 Part 3

* SinuSoidal Coding used for audio in MPEG-4 Part 3

* Windows Media Player related video codecs: Microsoft RLE, Microsoft Video 1, Cinepak, Indeo 2, 3 and 5, Motion JPEG, Microsoft MPEG-4 v1, v2 and v3, WMV1, WMV2, WMV3 ( aka VC-1 ) and several screen capture codecs.

# redirect MPEG-4 Part 3 # AAC-SSR

MPEG-4 Part 3 or MPEG-4 Audio ( formally ISO / IEC 14496-3 ) is the third part of the ISO / IEC MPEG-4 international standard developed by Moving Picture Experts Group.

* Scalable Sample Rate, used in MPEG-4 Part 3 and MPEG-2 Part 7

; Video formats: Cinepak, Dirac, DV, H. 263, H. 264 / MPEG-4 AVC ( both 8-bit and 10-bit H. 264 ), HuffYUV, Indeo 3, MJPEG, MPEG-1, MPEG-2, MPEG-4 Part 2, RealVideo 3 & 4, Sorenson ( thus enabling direct playback of the modified Sorenson H. 263 encoded videos downloaded from YouTube ), Theora, VC-1, VP5, VP6, VP8, DNxHD, Prores and some WMV.

* Bit Sliced Arithmetic Coding, audio coding from MPEG-4 Part 3

* Symbolic Music Representation, used in MPEG-4 Part 3 and defined in MPEG-4 Part 23

MPEG-4 consists of several standards — termed " parts "— including the following ( each part covers a certain aspect of the whole specification ):

MPEG-4 is efficient across a variety of bit-rates ranging from a few kilobits per second to tens of megabits per second.

H. 264 / AVC / MPEG-4 Part 10 contains a number of new features that allow it to compress video much more effectively than older standards and to provide more flexibility for application to a wide variety of network environments.

MPEG-4 is a method of defining compression of audio and visual ( AV ) digital data.

MPEG-4 absorbs many of the features of MPEG-1 and MPEG-2 and other related standards, adding 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.

Some of the audio payload formats include: G. 711, G. 723, G. 726, G. 729, GSM, QCELP, MP3, DTMF etc., and some of the video payload formats include: H. 261, H. 263, H. 264, MPEG-4 etc.

LPC predictors are used in Shorten, MPEG-4 ALS, FLAC, and other lossless audio codecs.

An AVI file may carry audio / visual data inside the chunks in virtually any compression scheme, including Full Frame ( Uncompressed ), Intel Real Time ( Indeo ), Cinepak, Motion JPEG, Editable MPEG, VDOWave, ClearVideo / RealVideo, QPEG, and MPEG-4 Video.

Thus, it is not a standard which deals with the actual encoding of moving pictures and audio, like MPEG-1, MPEG-2 and MPEG-4.

* ISO / IEC MPEG audio standards: MP1, MP2, MP3, AAC, HE-AAC and MPEG-4 ALS

MPEG-4 Audio does not target a single application such as real-time telephony or high-quality audio compression.

MPEG-4 Audio is a new type of audio standard that integrates numerous different types of audio coding: natural sound and synthetic sound, low bitrate delivery and high-quality delivery, speech and music, complex soundtracks and simple ones, traditional content and interactive content.

* Coding of video coding H. 262 / MPEG2-Video and H. 264 / MPEG-4 AVC

( ISO / IEC 14496 ) MPEG-4 uses further coding tools with additional complexity to achieve higher compression factors than MPEG-2.

In addition to more efficient coding of video, MPEG-4 moves closer to computer graphics applications.

Initially, MPEG-4 was aimed primarily at low bit-rate video communications ; however, its scope as a multimedia coding standard was later expanded.

Technology improvements can be found in the designs of H. 263v2 Annex I and MPEG-4 Part 2, which use frequency-domain prediction of transform coefficient values, and in H. 264 / MPEG-4 AVC, which uses spatial prediction and adaptive transform block size techniques and more sophisticated entropy coding than what was practical when the first JPEG design was developed.

The H. 264 name follows the ITU-T naming convention, where the standard is a member of the H. 26x line of VCEG video coding standards ; the MPEG-4 AVC name relates to the naming convention in ISO / IEC MPEG, where the standard is part 10 of ISO / IEC 14496, which is the suite of standards known as MPEG-4.

* Spatial prediction from the edges of neighboring blocks for " intra " coding, rather than the " DC "- only prediction found in MPEG-2 Part 2 and the transform coefficient prediction found in H. 263v2 and MPEG-4 Part 2.

This is available from the ETSI website, as is ETSI TS 101 154, Specification for the use of Video and Audio Coding in Broadcasting Applications based on the MPEG-2 Transport Stream, which gives details of the DVB use of source coding methods for MPEG-2 and, more recently, H. 264 / MPEG-4 AVC as well as audio encoding systems.

This system transmits an MPEG-2 or MPEG-4 family digital audio / digital video stream, using a QAM modulation with channel coding.