mp4

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. [|AAC (Advanced Audio Codec)] was standardized as an adjunct to MPEG-2 (as Part 7) before MPEG-4 was issued. MPEG-4 is still a developing standard and is divided into a number of parts. Companies promoting MPEG-4 compatibility do not always clearly state which "part" level compatibility they are referring to. The key parts to be aware of are [|MPEG-4 part 2] (including Advanced Simple Profile, used by [|codecs] such as [|DivX], [|Xvid], [|Nero Digital] and [|3ivx] and by [|Quicktime] 6) and [|MPEG-4 part 10] (MPEG-4 AVC/H.264 or Advanced Video Coding, used by the [|x264] codec, by [|Nero Digital AVC], by Quicktime 7, and by next-gen DVD formats like [|HD DVD] and [|Blu-ray Disc]). Most of the features included in MPEG-4 are left to individual [|developers] to decide whether to implement them. This means that there are probably no complete implementations of the entire MPEG-4 set of standards. To deal with this, the standard includes the concept of "profiles" and "levels", allowing a specific set of capabilities to be defined in a manner appropriate for a subset of applications. Initially, MPEG-4 was aimed primarily at low [|bit-rate] [|video] [|communications]; however, its scope was later expanded to be much more of a multimedia coding standard. MPEG-4 is efficient across a variety of bit-rates ranging from a few kilobits per second to tens of megabits per second. MPEG-4 provides the following functionalities:
 * MPEG-4** is a collection of methods defining [|compression] of audio and visual (AV) digital data. It was introduced in late [|1998] and designated a [|standard] for a group of [|audio] and [|video] [|coding] formats and related technology agreed upon by the [|ISO]/[|IEC] [|Moving Picture Experts Group] (MPEG) under the formal standard ISO/IEC 14496. Uses of MPEG-4 include compression of AV data for web ([|streaming media]) and [|CD] [|distribution], voice ([|telephone], [|videophone]) and [|broadcast] [|television] applications.
 * Improved coding efficiency
 * Ability to [|encode] mixed media data ([|video], [|audio], [|speech])
 * Error resilience to enable robust [|transmission]
 * Ability to interact with the [|audio-visual] scene generated at the receiver [|[1]]



=Apple Music Event 2001-The First Ever iPod Introduction=

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How Can I Make Use of MP4?
There are all sorts of ways to enjoy the benefits of MP4. First, as an online consumer, you can enjoy all sorts of movie shorts, professional and amateur, thanks to the use of this format. You can also often save these shorts to your hard drive, and share them with others via [|email]. Some sites that make use of this streaming application also make it possible for you to send a copy of the movie short through email and directly to a friend or acquaintance. When it comes to [|business applications], the use of MP4 makes it possible to hand presentations on the web site that discuss various goods and services offered by the company. The format can be used to dress up presentations for prospective clients, as well as a tool in sales and marketing campaigns. Whether for fun or as a [|business tool], MP4 is a versatile format. [|[2]] = =