1.
Multimedia
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Multimedia is content that uses a combination of different content forms such as text, audio, images, animations, video and interactive content. Multimedia contrasts with media that use only rudimentary computer displays such as text-only or traditional forms of printed or hand-produced material, Multimedia devices are electronic media devices used to store and experience multimedia content. Multimedia is distinguished from mixed media in art, for example. The term rich media is synonymous with interactive multimedia, the term multimedia was coined by singer and artist Bob Goldstein to promote the July 1966 opening of his LightWorks at LOursin show at Southampton, Long Island. Goldstein was perhaps aware of an American artist named Dick Higgins, two years later, in 1968, the term multimedia was re-appropriated to describe the work of a political consultant, David Sawyer, the husband of Iris Sawyer—one of Goldsteins producers at LOursin. In the intervening forty years, the word has taken on different meanings, in the late 1970s, the term referred to presentations consisting of multi-projector slide shows timed to an audio track. However, by the 1990s multimedia took on its current meaning, in the 1993 first edition of Multimedia, Making It Work, Tay Vaughan declared Multimedia is any combination of text, graphic art, sound, animation, and video that is delivered by computer. When you allow the user – the viewer of the project – to control what, when you provide a structure of linked elements through which the user can navigate, interactive multimedia becomes hypermedia. The German language society Gesellschaft für deutsche Sprache recognized the words significance, the institute summed up its rationale by stating has become a central word in the wonderful new media world. In common usage, multimedia refers to an electronically delivered combination of media including video, still images, audio, much of the content on the web today falls within this definition as understood by millions. That era saw also a boost in the production of educational multimedia CD-ROMs, the term video, if not used exclusively to describe motion photography, is ambiguous in multimedia terminology. Video is often used to describe the format, delivery format. Multiple forms of content are often not considered modern forms of presentation such as audio or video. Likewise, single forms of content with single methods of information processing are often called multimedia. Performing arts may also be considered multimedia considering that performers and props are multiple forms of content and media. Multimedia presentations may be viewed by person on stage, projected, transmitted, a broadcast may be a live or recorded multimedia presentation. Broadcasts and recordings can be analog or digital electronic media technology. Digital online multimedia may be downloaded or streamed, streaming multimedia may be live or on-demand
2.
Subtitle (captioning)
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The encoded method can either be pre-rendered with the video or separate as either a graphic or text to be rendered and overlaid by the receiver. Teletext subtitle language follows the audio, except in multi-lingual countries where the broadcaster may provide subtitles in additional languages on other teletext pages. EIA-608 captions are similar, except that North American Spanish stations may provide captioning in Spanish on CC3, DVD and Blu-ray only differ in using run-length encoded graphics instead of text, as well as some HD DVB broadcasts. Sometimes, mainly at festivals, subtitles may be shown on a separate display below the screen. Television subtitling for the deaf and hard of hearing is referred to as closed captioning in some countries. The word subtitle is the prefix followed by title. In some cases, such as opera, the dialog is displayed above the stage in what are referred to as surtitles. Today, professional subtitlers usually work with specialized software and hardware where the video is digitally stored on a hard disk. Besides creating the subtitles, the subtitler usually also tells the computer software the exact positions where each subtitle should appear and disappear, for cinema film, this task is traditionally done by separate technicians. The end result is a file containing the actual subtitles as well as position markers indicating where each subtitle should appear and disappear. These markers are based on timecode if it is a work for electronic media. For multimedia-style Webcasting, check, SMIL Synchronized Multimedia Integration Language, same-language captions, i. e. without translation, were primarily intended as an aid for people who are deaf or hard of hearing. Internationally, there are several studies which demonstrate that same-language captioning can have a major impact on literacy. This method of subtitling is used by television broadcasters in China. Same Language Subtitling is the use of Synchronized Captioning of Musical Lyrics as a Repeated Reading activity, the basic reading activity involves students viewing a short subtitled presentation projected onscreen, while completing a response worksheet. Closed captioning is the American term for closed subtitles specifically intended for people who are deaf and these are a transcription rather than a translation, and usually contain descriptions of important non-dialog audio as well such as or and lyrics. From the expression closed captions the word caption has in recent years come to mean a subtitle intended for the hard of hearing, be it open or closed. In British English subtitles usually refers to subtitles for the hard of hearing, however, programs such as news bulletins, current affairs programs, sport, some talk shows and political and special events utilize real time or online captioning
3.
Internet
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The Internet is the global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. The origins of the Internet date back to research commissioned by the United States federal government in the 1960s to build robust, the primary precursor network, the ARPANET, initially served as a backbone for interconnection of regional academic and military networks in the 1980s. Although the Internet was widely used by academia since the 1980s, Internet use grew rapidly in the West from the mid-1990s and from the late 1990s in the developing world. In the two decades since then, Internet use has grown 100-times, measured for the period of one year, newspaper, book, and other print publishing are adapting to website technology, or are reshaped into blogging, web feeds and online news aggregators. The entertainment industry was initially the fastest growing segment on the Internet, the Internet has enabled and accelerated new forms of personal interactions through instant messaging, Internet forums, and social networking. Business-to-business and financial services on the Internet affect supply chains across entire industries, the Internet has no centralized governance in either technological implementation or policies for access and usage, each constituent network sets its own policies. The term Internet, when used to refer to the global system of interconnected Internet Protocol networks, is a proper noun. In common use and the media, it is not capitalized. Some guides specify that the word should be capitalized when used as a noun, the Internet is also often referred to as the Net, as a short form of network. Historically, as early as 1849, the word internetted was used uncapitalized as an adjective, the designers of early computer networks used internet both as a noun and as a verb in shorthand form of internetwork or internetworking, meaning interconnecting computer networks. The terms Internet and World Wide Web are often used interchangeably in everyday speech, however, the World Wide Web or the Web is only one of a large number of Internet services. The Web is a collection of interconnected documents and other web resources, linked by hyperlinks, the term Interweb is a portmanteau of Internet and World Wide Web typically used sarcastically to parody a technically unsavvy user. The ARPANET project led to the development of protocols for internetworking, the third site was the Culler-Fried Interactive Mathematics Center at the University of California, Santa Barbara, followed by the University of Utah Graphics Department. In an early sign of growth, fifteen sites were connected to the young ARPANET by the end of 1971. These early years were documented in the 1972 film Computer Networks, early international collaborations on the ARPANET were rare. European developers were concerned with developing the X.25 networks, in December 1974, RFC675, by Vinton Cerf, Yogen Dalal, and Carl Sunshine, used the term internet as a shorthand for internetworking and later RFCs repeated this use. Access to the ARPANET was expanded in 1981 when the National Science Foundation funded the Computer Science Network, in 1982, the Internet Protocol Suite was standardized, which permitted worldwide proliferation of interconnected networks.5 Mbit/s and 45 Mbit/s. Commercial Internet service providers emerged in the late 1980s and early 1990s, the ARPANET was decommissioned in 1990
4.
IPhone
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IPhone is a line of smartphones designed and marketed by Apple Inc. They run Apples iOS mobile operating system, the first generation iPhone was released on June 29,2007, the most recent iPhone model is the iPhone 7, which was unveiled at a special event on September 7,2016. The user interface is built around the devices multi-touch screen, including a virtual keyboard, the iPhone has Wi-Fi and can connect to cellular networks. Other functionality, such as games, reference works, and social networking. As of January 2017, Apples App Store contained more than 2.2 million applications available for the iPhone, Apple has released ten generations of iPhone models, each accompanied by one of the ten major releases of the iOS operating system. The iPhone 5 featured a taller, 4-inch display and Apples newly introduced Lightning connector, in 2013, Apple released the 5S with improved hardware and a fingerprint reader, and the lower-cost 5C, a version of the 5 with colored plastic casings instead of metal. They were followed by the larger iPhone 6, with models featuring 4.7 and 5. 5-inch displays.5 mm headphone jack found on previous phones. The iPhones commercial success has been credited with reshaping the smartphone industry, the original iPhone was one of the first phones to use a design featuring a slate format with a touchscreen interface. Almost all modern smartphones have replicated this style of design, in the US, the iPhone holds the largest share of the smartphone market. As of late 2015, the iPhone had a 43. 6% market share, followed by Samsung, LG, Apple CEO Steve Jobs steered the original focus away from a tablet and towards a phone. Apple created the device during a collaboration with Cingular Wireless at the time—at an estimated development cost of US$150 million over thirty months. Apple rejected the design by committee approach that had yielded the Motorola ROKR E1, among other deficiencies, the ROKR E1s firmware limited storage to only 100 iTunes songs to avoid competing with Apples iPod nano. Jobs unveiled the iPhone to the public on January 9,2007, the passionate reaction to the launch of the iPhone resulted in sections of the media dubbing it the Jesus phone. Following this successful release in the US, the first generation iPhone was made available in the UK, France, and Germany in November 2007, on July 11,2008, Apple released the iPhone 3G in twenty-two countries, including the original six. Apple released the iPhone 3G in upwards of eighty countries and territories. Apple announced the iPhone 3GS on June 8,2009, along with plans to release it later in June, July, many would-be users objected to the iPhones cost, and 40% of users had household incomes over US$100,000. The back of the original first generation iPhone was made of aluminum with a black plastic accent, the iPhone 3G and 3GS feature a full plastic back to increase the strength of the GSM signal. The iPhone 3G was available in an 8 GB black model, the iPhone 3GS was available in both colors, regardless of storage capacity
5.
Mobile phone
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A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the systems of a mobile phone operator. Most modern mobile telephone services use a network architecture, and, therefore. Mobile phones which offer these and more general computing capabilities are referred to as smartphones, the first handheld mobile phone was demonstrated by John F. Mitchell and Martin Cooper of Motorola in 1973, using a handset weighing c.4.4 lbs. In 1983, the DynaTAC 8000x was the first commercially available mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to seven billion, penetrating 100% of the global population. In first quarter of 2016, the top smartphone manufacturers were Samsung, Apple, a handheld mobile radio telephone service was envisioned in the early stages of radio engineering. In 1917, Finnish inventor Eric Tigerstedt filed a patent for a pocket-size folding telephone with a thin carbon microphone. Early predecessors of cellular phones included analog radio communications from ships, the race to create truly portable telephone devices began after World War II, with developments taking place in many countries. These 0G systems were not cellular, supported few simultaneous calls, the first handheld mobile phone was demonstrated by John F. Mitchell and Martin Cooper of Motorola in 1973, using a handset weighing c.4.4 lbs. The first commercial automated cellular network was launched in Japan by Nippon Telegraph and this was followed in 1981 by the simultaneous launch of the Nordic Mobile Telephone system in Denmark, Finland, Norway, and Sweden. Several other countries followed in the early to mid-1980s. These first-generation systems could support far more simultaneous calls but still used analog cellular technology, in 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. In 1991, the digital cellular technology was launched in Finland by Radiolinja on the GSM standard. This sparked competition in the sector as the new operators challenged the incumbent 1G network operators, ten years later, in 2001, the third generation was launched in Japan by NTT DoCoMo on the WCDMA standard. This was followed by 3. 5G, 3G+ or turbo 3G enhancements based on the high-speed packet access family, allowing UMTS networks to have data transfer speeds. By 2009, it had become clear that, at point, 3G networks would be overwhelmed by the growth of bandwidth-intensive applications. Consequently, the industry began looking to data-optimized fourth-generation technologies, with the promise of speed improvements up to ten-fold over existing 3G technologies
6.
Portable media player
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A portable media player or digital audio player is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is stored on a CD, DVD, flash memory, microdrive. Most portable media players are equipped with a 3.5 mm headphone jack, in contrast, analog portable audio players play music from non-digital media that use analog signal storage, such as cassette tapes or vinyl records. Often mobile digital audio players are marketed and sold as portable MP3 players, even if they support other file formats. Portable DVD players are still manufactured by brands across the world and this article focuses on portable devices that have the main function of playing media. The immediate predecessor in the place of the digital audio player was the portable CD player and prior to that. British scientist Kane Kramer invented the first digital audio player, which he called the IXI and his 1979 prototypes were capable of approximately one hour of audio playback but did not enter commercial production. His UK patent application was not filed until 1981 and was issued in 1985 in the UK and 1987 in the US. However, in 1988 Kramers failure to raise the £60,000 required to renew the patent meant it entering the public domain, but he still owns the designs. Apple Inc. hired Kramer as a consultant and presented his work as an example of art in the field of digital audio players during their litigation with Burst. com almost two decades later. At about the same time AT&T also developed an internal Web based music streaming service that had the ability to download music to FlashPAC, AAC and such music downloading services later formed the foundation for the Apple iPod and iTunes. The first portable MP3 player was launched in 1997 by Saehan Information Systems, in mid-1998, the South Korean company licensed the players for North American distribution to Eiger Labs, which rebranded them as the EigerMan F10 and F20. The flash-based players were available in 32 MB or 64 MB storage capacity and had a LCD screen to tell the user the song currently playing. The first production-volume portable digital audio player was The Audible Player from Audible. com available for sale in January 1998 and it only supported playback of digital audio in Audibles proprietary, low-bitrate format which was developed for spoken word recordings. Capacity was limited to 4 MB of internal memory, or about 2 hours of play. The unit had no display and rudimentary controls, the Rio PMP300 from Diamond Multimedia was introduced in September 1998, a few months after the MPMan, and also featured a 32 MB storage capacity. It was a success during the season, with sales exceeding expectations. Interest and investment in digital music were subsequently spurred from it, because of the players notoriety as the target of a major lawsuit, the Rio is erroneously assumed to be the first digital audio player
7.
ITunes Store
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ITunes Store is a software-based online digital media store operated by Apple Inc. It opened on April 28,2003, and has been the largest music vendor in the United States since April 2008, and the largest music vendor in the world since February 2010. It offers over 35 -40 million songs,2.2 million apps,25,000 TV shows, iTunes Stores revenues in the first quarter of 2011 totaled nearly US$1.4 billion, by May 28,2014, the store had sold 35 billion songs worldwide. On January 6,2009, Apple announced that DRM had been removed from 80% of its catalog in the US. As of June 2013, iTunes Store possesses 575 million active user accounts, before iTunes Store, most of the online music was download through websites like Napster. Steve Jobs expressed concern that people were illegally obtaining music because it was the option they had. In 2002, Steve Jobs made an agreement with the five major record labels to offer their content through iTunes, iTunes Store was introduced by Steve Jobs at a Worldwide Developers Conference to give music listeners a legal alternative to peer-to-peer file sharing networks. When it opened, it was the only legal digital catalog of music to songs from all five major record labels. At first, it was available on Mac OS X. Following the introduction of iTunes Store, individual songs were all sold for the same price, Music in the store is in the Advanced Audio Coding format, which is the MPEG-4-specified successor to MP3. Originally, songs were available with DRM and were encoded at 128 kbit/s. At the January 2009 Macworld Expo, Apple announced that all music would be made available without DRM. Previously, this model, known as iTunes Plus, had available only for music from EMI. Users can sample songs by listening to previews, ninety seconds in length, some Apps cost money and some are free. Developers can decide which prices they want to charge for apps, from a pre-set list of pricing tiers, when someone downloads an App,70 percent of the purchase goes to the developer, and 30 percent goes to Apple. At the Macworld 2008 keynote, Steve Jobs, who was Apples CEO at the time, movies are available for rent in iTunes Store on the same day they are released on DVD, though iTunes Store also offers for rental some movies that are still in theaters. Movie rentals are only viewable for 24 hours or 48 hours after users begin viewing them, iTunes Store also offers one low-priced movie rental a week, in the United States, this rental costs 99 cents. Movie rentals are not yet available in all countries but it is available in the United States, Mexico, there is a weekly promotion in which one to three songs are available to download for free to logged-in users
8.
Audiobook
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An audiobook is a recording of a text being read. A reading of the text is noted as unabridged, while readings of a reduced version. Spoken audio has been available in schools and public libraries and to an extent in music shops since the 1930s. Many spoken word albums were made prior to the age of videocassettes, DVDs, compact discs and it was not until the 1980s that the medium began to attract book retailers, and then book retailers started displaying audiobooks on bookshelves rather than in separate displays. In 1994, the Audio Publishers Association established the term audiobook as the industry standard, Spoken word recordings first became possible with the invention of the phonograph by Thomas Edison in 1877. Phonographic books were one of the original applications envisioned by Edison which would speak to people without effort on their part. The initial words spoken into the phonograph were Edisons recital of Mary Had a Little Lamb, one early listener complained that he would need a wheelbarrow to carry around talking books recorded on discs with such limited storage capacity. By the 1930s close-grooved records increased to 20 minutes making possible longer narrative, the first test recordings in 1932 included a chapter from Helen Kellers Midstream and Edgar Allan Poes The Raven. The organization received approval for exemption from copyright and free postal distribution of talking books. M. Delafield, Cora Jarrett, Rudyard Kipling, John Masefield, Macdonald mobilized the women of the Auxiliary under the motto Education is a right, not a privilege. In 1952, Macdonald established recording studios in seven cities across the United States. Caedmon Records was a pioneer in the business, it was the first company dedicated to selling spoken work recordings to the public and has been called the seed of the audiobook industry. Caedmon was formed in New York in 1952 by college graduates Barbara Holdridge and their first release was a collection of poems by Dylan Thomas as read by the author. The original 1952 recording was a selection for the 2008 United States National Recording Registry, Listening Library was also a pioneering company, it was one of the first to distribute childrens audiobooks to schools, libraries and other special markets, including VA hospitals. It was founded by Anthony Ditlow and his wife in 1955 in their Red Bank, New Jersey home, like Caedemon, Listening Library and Spoken Arts benefited from the new technology of LPs, but also increased governmental funding for schools and libraries beginning in the 1950s and 60s. Cassette tapes were invented in 1963 and a few libraries, such as the Library of Congress, however, during the 1970s, a number of technological innovations allowed the cassette tape wider usage in libraries and also spawned the creation of new commercial audiobook market. In the early 1970s, instructional recordings were among the first commercial products sold on cassette, there were 8 companies distributing materials on cassette with titles such as Managing and Selling Companies and Executive Seminar in Sound on a series of 60-minute cassettes. His company, the Maryland-based Recorded Books, followed the model of Books on Tape but with higher quality studio recordings, Recorded Books and Chivers Audio Books were the first to develop integrated production teams and to work with professional actors
9.
Streaming media
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Streaming media is multimedia that is constantly received by and presented to an end-user while being delivered by a provider. A client end-user can use their player to begin to play the data file before the entire file has been transmitted. For example, in the 1930s, elevator music was among the earliest popularly available streaming media, the term streaming media can apply to media other than video and audio such as live closed captioning, ticker tape, and real-time text, which are all considered streaming text. As of 2017, streaming is generally taken to refer to cases where a user watches digital video content or listens to audio content on a computer screen. With streaming content, the user does not have to download the digital video or digital audio file before they start to watch/listen to it. There are challenges with streaming content on the Internet, as of 2016, two popular streaming services are the video sharing website YouTube, which contains video and audio files on a huge range of topics and Netflix, which streams movies and TV shows. Live streaming refers to Internet content delivered in real-time, as events happen, Live internet streaming requires a form of source media, an encoder to digitize the content, a media publisher, and a content delivery network to distribute and deliver the content. Live streaming does not need to be recorded at the origination point, in the early 1920s, George O. Attempts to display media on computers date back to the earliest days of computing in the mid-20th century, however, little progress was made for several decades, primarily due to the high cost and limited capabilities of computer hardware. From the late 1980s through the 1990s, consumer-grade personal computers became powerful enough to various media. These technological improvement facilitated the streaming of audio and video content to users in their homes and workplaces. The band Severe Tire Damage was the first group to live on the Internet. On June 24,1993, the band was playing a gig at Xerox PARC while elsewhere in the building, as proof of PARCs technology, the bands performance was broadcast and could be seen live in Australia and elsewhere. Microsoft Research developed a Microsoft TV application which was compiled under MS Windows Studio Suite, realNetworks was also a pioneer in the streaming media markets, when it broadcast a baseball game between the New York Yankees and the Seattle Mariners over the Internet in 1995. The first symphonic concert on the Internet took place at the Paramount Theater in Seattle, the concert was a collaboration between The Seattle Symphony and various guest musicians such as Slash, Matt Cameron, and Barrett Martin. When Word Magazine launched in 1995, they featured the first-ever streaming soundtracks on the Internet.4 in 1999, in June 1999 Apple also introduced a streaming media format in its QuickTime 4 application. It was later widely adopted on websites along with RealPlayer. In 2000 Industryview. com launched its worlds largest streaming video archive website to help promote themselves
10.
International Organization for Standardization
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The International Organization for Standardization is an international standard-setting body composed of representatives from various national standards organizations. Founded on 23 February 1947, the organization promotes worldwide proprietary and it is headquartered in Geneva, Switzerland, and as of March 2017 works in 162 countries. It was one of the first organizations granted general consultative status with the United Nations Economic, ISO, the International Organization for Standardization, is an independent, non-governmental organization, the members of which are the standards organizations of the 162 member countries. It is the worlds largest developer of international standards and facilitates world trade by providing common standards between nations. Nearly twenty thousand standards have been set covering everything from manufactured products and technology to food safety, use of the standards aids in the creation of products and services that are safe, reliable and of good quality. The standards help businesses increase productivity while minimizing errors and waste, by enabling products from different markets to be directly compared, they facilitate companies in entering new markets and assist in the development of global trade on a fair basis. The standards also serve to safeguard consumers and the end-users of products and services, the three official languages of the ISO are English, French, and Russian. The name of the organization in French is Organisation internationale de normalisation, according to the ISO, as its name in different languages would have different abbreviations, the organization adopted ISO as its abbreviated name in reference to the Greek word isos. However, during the meetings of the new organization, this Greek word was not invoked. Both the name ISO and the logo are registered trademarks, the organization today known as ISO began in 1926 as the International Federation of the National Standardizing Associations. ISO is an organization whose members are recognized authorities on standards. Members meet annually at a General Assembly to discuss ISOs strategic objectives, the organization is coordinated by a Central Secretariat based in Geneva. A Council with a membership of 20 member bodies provides guidance and governance. The Technical Management Board is responsible for over 250 technical committees, ISO has formed joint committees with the International Electrotechnical Commission to develop standards and terminology in the areas of electrical and electronic related technologies. Information technology ISO/IEC Joint Technical Committee 1 was created in 1987 to evelop, maintain, ISO has three membership categories, Member bodies are national bodies considered the most representative standards body in each country. These are the members of ISO that have voting rights. Correspondent members are countries that do not have their own standards organization and these members are informed about ISOs work, but do not participate in standards promulgation. Subscriber members are countries with small economies and they pay reduced membership fees, but can follow the development of standards
11.
Digital audio
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Digital audio is technology that can be used to record, store, generate, manipulate, and reproduce sound using audio signals that have been encoded in digital form. A microphone converts sound to an electrical signal, then an analog-to-digital converter —typically using pulse-code modulation—converts the analog signal into a digital signal. This digital signal can then be recorded, edited and modified using digital audio tools, digital audio systems may include compression, storage, processing and transmission components. Conversion to a digital format allows convenient manipulation, storage, transmission, modern online music distribution depends on digital recording and data compression. The availability of music as data files, rather than as objects, has significantly reduced the costs of distribution. Before digital audio, the music industry distributed and sold music by selling copies in the form of records. With digital audio and online distribution systems such as iTunes, companies sell digital files to consumers. This digital audio/Internet distribution model is less expensive than producing physical copies of recordings, packaging them. An analog audio system captures sounds, and converts their physical waveforms into electrical representations of those waveforms by use of a transducer, the sounds are then stored, as on tape, or transmitted. The process is reversed for playback, the signal is amplified. Analog audio retains its fundamental wave-like characteristics throughout its storage, transformation, duplication, analog audio signals are susceptible to noise and distortion, due to the innate characteristics of electronic circuits and associated devices. Disturbances in a system do not result in error unless the disturbance is so large as to result in a symbol being misinterpreted as another symbol or disturb the sequence of symbols. A digital audio signal may be encoded for correction of any errors that occur in the storage or transmission of the signal. This technique, known as channel coding, is essential for broadcast or recorded digital systems to maintain bit accuracy, the discrete time and level of the binary signal allow a decoder to recreate the analog signal upon replay. Eight to Fourteen Bit Modulation is a code used in the audio Compact Disc. A digital audio system starts with an ADC that converts a signal to a digital signal. The ADC runs at a sampling rate and converts at a known bit resolution. CD audio, for example, has a rate of 44.1 kHz
12.
MP4 player
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The name MP4 player is a marketing term for inexpensive portable media players, usually from little known or generic device manufacturers. The name itself is a misnomer, since most MP4 players through 2007 were incompatible with the MPEG-4 Part 14 or the. mp4 container format, instead, the term refers to their ability to play more file types than just MP3. The Archos Jukebox Multimedia was the first commercial portable media player, todays MP4 Players can play video in a multitude of video formats without the need to pre-convert them or downsize them prior to playing them. Some MP4 Players possess USB ports in order for the users to connect it to a PC, some models also have memory cards to expand the memory of the player instead of storing files in the built-in memory. Chipsets and file formats that are particular to this kind of media player. Anyka is a chip used by many MP4 Players. It supports the same formats as Rockchip, fuzhou Rockchip Electronicss video processing Rockchip has been incorporated into many MP4 players, supporting AVI with no B frames in MPEG-4 Part 2, while MP2 audio compression is used. The clip must be padded out, if necessary, to fit the resolution of the display, any slight deviation from the supported format results in a Format Not Supported error message. Some players, like the Onda VX979+, have started to use chipsets from Ingenic, also, players with SigmaTel-based technology are compatible with SMV. The image compression algorithm of this format is inefficient by modern standards, there are a fixed range of resolutions and framerates available. A 30-minute video would have a filesize of approximately 100 MB at a 160 ×120 resolution, the MTV video format consists of a 512-byte file header that operates by displaying a series of raw image frames during MP3 playback. During this process, audio frames are passed to the chipsets decoder and this method does not require additional hardware for decoding, though it will lead to a higher amount of memory consumption. For that reason, the capacity of an MP4 player that uses MTV files is effectively less than that of a player that decompresses files on the fly. Memory card Personal video recorder Radio receiver S1 MP3 player MPEG-4 Software at DMOZ MyMPx
