Adobe Flash (formerly SmartSketch FutureSplash, FutureSplash Animator and Macromedia Flash) is a multimedia platform used to add animation, video, and interactivity to web pages. Flash is frequently used for advertisements and games. More recently, it has been positioned as a tool for "Rich Internet Applications" ("RIAs").
Flash manipulates vector and raster graphics to provide animation of text, drawings, and still images. It supports bidirectional streaming of audio and video, and it can capture user input via mouse, keyboard, microphone, and camera. Flash contains an object-oriented language called ActionScript.
Flash content may be displayed on various computer systems and devices, using Adobe Flash Player, which is available free of charge for common web browsers, some mobile phones and a few other electronic devices (using Flash Lite).
Some users feel that Flash enriches their web experience, while others find the extensive use of Flash animation, particularly in advertising, intrusive and annoying, giving rise to a cottage industry that specializes in blocking Flash content. Flash has also been criticized for adversely affecting the usability of web pages
History
Originally developed by Macromedia, Flash was introduced in 1996, and is currently developed and distributed by Adobe Systems, as the result of their 2005 purchase of the company. The precursor to the Flash application was SmartSketch, a drawing application for pen computers running the PenPoint OS developed by Jonathan Gay, who began working on it in college and extended the idea for Silicon Beach Software and its successors.[2][3] When PenPoint failed in the marketplace, SmartSketch was ported to Microsoft Windows and Mac OS. With the Internet becoming more popular, SmartSketch was re-released as FutureSplash, a vector-based web animation in competition with Macromedia Shockwave. In 1995, SmartSketch was further modified with frame-by-frame animation features and released as FutureSplash Animator on multiple platforms.[4] The product was offered to Adobe and used by Microsoft in its early work with the Internet (MSN). In 1996, FutureSplash was acquired by Macromedia and released as Flash, contracting "Future" and "Splash".
[edit] Recent developments
Adobe Labs (previously called Macromedia Labs) is a source for news and pre-release versions of emerging products and technologies from Adobe. Most innovations, such as Flash 10, Flex 3, and ActionScript 3.0 have all been discussed and/or trialled on the site.
One area Adobe is focusing on (as of February 2009) is the deployment of Rich Internet Applications (RIAs). To this end, they released Adobe Integrated Runtime (AIR), a cross-platform runtime environment which can be used to build rich internet applications, using Adobe Flash, that can be deployed as desktop applications. It surpassed 100 million installations worldwide in February 2009.[5] Flash can be installed independently from Adobe's website (adobe.com) and is installed silently when Adobe Reader is installed.[6][not in citation given]
Two additional components designed for large-scale implementation have been proposed by Adobe for future releases of Flash: first, the option to require an ad to be played in full before the main video piece is played; and second, the integration of digital rights management (DRM) capabilities. This way Adobe can give companies the option to link an advertisement with content and make sure that both are played and remain unchanged.[7]
Flash Player for smart phones was made available to handset manufacturers at the end of 2009.[8]
[edit] Open Screen Project
On May 1, 2008 Adobe announced Open Screen Project, which hopes to provide a consistent application interface across devices such as personal computers, mobile devices and consumer electronics.[9] When the project was announced, several goals were outlined: the abolition of licensing fees for Adobe Flash Player and Adobe Integrated Runtime, the removal of restrictions on the use of the Shockwave Flash (SWF) and Flash Video (FLV) file formats, the publishing of application programming interfaces for porting Flash to new devices and the publishing of The Flash Cast protocol and Action Message Format (AMF), which let Flash applications receive information from remote databases.[9]
As of February 2009, the specifications removing the restrictions on the use of SWF and FLV/F4V specs have been published.[10] The Flash Cast protocol—now known as the Mobile Content Delivery Protocol—and AMF protocols have also been made available,[10] with AMF available as an open source implementation, BlazeDS. Work on the device porting layers is in the early stages. Adobe intends to remove the licensing fees for Flash Player and Adobe AIR for devices at their release for the Open Screen Project.
The list of mobile device providers who have joined the project includes Palm, Motorola and Nokia,[11] who, together with Adobe, have announced a $10 million Open Screen Project fund.[12]
[edit] Format
Main article: SWF
Flash files are in the SWF format, traditionally called "ShockWave Flash" movies, "Flash movies," or "Flash applications", usually have a .swf file extension, and may be used in the form of a web page plug-in, strictly "played" in a standalone Flash Player, or incorporated into a self-executing Projector movie (with the .exe extension in Microsoft Windows). Flash Video files[spec 1] have a .flv file extension and are either used from within .swf files or played through a flv-aware player, such as VLC, or QuickTime and Windows Media Player with external codecs added.
The use of vector graphics combined with program code allows Flash files to be smaller — and thus for streams to use less bandwidth — than the corresponding bitmaps or video clips. For content in a single format (such as just text, video, or audio), other alternatives may provide better performance and consume less CPU power than the corresponding Flash movie, for example when using transparency or making large screen updates such as photographic or text fades.
In addition to a vector-rendering engine, the Flash Player includes a virtual machine called the ActionScript Virtual Machine (AVM) for scripting interactivity at run-time, support for video, MP3-based audio, and bitmap graphics. As of Flash Player 8, it offers two video codecs: On2 Technologies VP6 and Sorenson Spark, and run-time support for JPEG, Progressive JPEG, PNG, and GIF. In the next version, Flash is slated to use a just-in-time compiler for the ActionScript engine.
Flash Player is a browser plugin, and cannot run within a usual e-mail client, such as Outlook. Instead, a link must open a browser window. A Gmail labs feature allows playback of YouTube videos linked in emails.
[edit] Flash Video
Main article: Flash Video
Virtually all browser plugins for video are free of charge and cross-platform, including Adobe's offering of Flash Video, which was first introduced with Flash version 6. Flash Video has been a popular choice for websites due to the large installed user base and programmability of Flash. In 2010, Apple publicly criticized Adobe Flash, including its implementation of video playback for not taking advantage of hardware acceleration, one reason Flash is not to be found on Apple's mobile devices. Soon after Apple's criticism, Adobe demoed and released a beta version of Flash 10.1, which takes advantage of GPU hardware acceleration even on a Mac. Flash 10.2 beta, released December 2010, adds hardware acceleration for the whole video rendering pipeline.
[edit] Flash Audio
Flash Audio is most commonly encoded in MP3 or AAC (Advanced Audio Coding) however it does also support ADPCM, Nellymoser (Nellymoser Asao Codec) and Speex audio codecs. Flash allows sample rates of 11, 22 and 44.1 kHz. It does not support 48 kHz audio sample rate which is the standard TV, DVD sample rate.
On August 20, 2007, Adobe announced on its blog that with Update 3 of Flash Player 9, Flash Video will also support some parts of the MPEG-4 international standards.[13] Specifically, Flash Player will have support for video compressed in H.264 (MPEG-4 Part 10), audio compressed using AAC (MPEG-4 Part 3), the F4V, MP4 (MPEG-4 Part 14), M4V, M4A, 3GP and MOV multimedia container formats, 3GPP Timed Text specification (MPEG-4 Part 17) which is a standardized subtitle format and partial parsing support for the 'ilst' atom which is the ID3 equivalent iTunes uses to store metadata. MPEG-4 Part 2 and H.263 will not be supported in F4V file format. Adobe also announced that it will be gradually moving away from the FLV format to the standard ISO base media file format (MPEG-4 Part 12) owing to functional limits with the FLV structure when streaming H.264. The final release of the Flash Player supporting some parts of MPEG-4 standards had become available in Fall 2007.[14]
Adobe Flash Player 10.1 does not support acoustic echo cancellation, unlike the VoIP offerings of Skype and Google Voice, making this and earlier versions of Flash less suitable for group calling or meetings. Flash Player 10.3 Beta incorporates acoustic echo cancellation.
[edit] Scripting language
Further information: ActionScript
[edit] Proprietary restrictions
See also: Proprietary software
The proprietary nature of Flash has been a concern to advocates of open standards and free software. Its widespread use has, according to such observers, harmed the otherwise open nature of the World Wide Web.[15] A response may be seen in Adobe's Open Screen Project: Adobe's restrictions on the use of the SWF/FLV specifications have been lifted.
Representing open standards, inventor of CSS and co-author of HTML5, Håkon Wium Lie explained in a Google tech talk entitled "the
I believe very strongly, that we need to agree on some kind of baseline video format if [the video element] is going to succeed. Flash is today the baseline format on the web. The problem with Flash is that it's not an open standard.
[edit] Disclosure
In October 1998, Macromedia disclosed the Flash Version 3 Specification to the world on its website. It did this in response to many new and often semi-open formats competing with SWF, such as Xara's Flare and Sharp's Extended Vector Animation formats. Several developers quickly created a C library for producing SWF. In February 1999, the company introduced MorphInk 99, the first third-party program to create SWF files. Macromedia also hired Middlesoft to create a freely available developers' kit for the SWF file format versions 3 to 5.
Macromedia made the Flash Files specifications for versions 6 and later available only under a non-disclosure agreement, but they are widely available from various sites.
In April 2006, the Flash SWF file format specification was released with details on the then newest version format (Flash 8). Although still lacking specific information on the incorporated video compression formats (On2, Sorenson Spark, etc.), this new documentation covered all the new features offered in Flash v8 including new ActionScript commands, expressive filter controls, and so on. The file format specification document is offered only to developers who agree to a license agreement that permits them to use the specifications only to develop programs that can export to the Flash file format. The license forbids the use of the specifications to create programs that can be used for playback of Flash files. The Flash 9 specification was made available under similar restrictions.[17]
In June 2009, Adobe launched the Open Screen Project (Adobe link), which made the SWF specification available without restrictions. Previously, developers could not use the specification for making SWF-compatible players, but only for making SWF-exporting authoring software. The specification still omits information on codecs such as Sorenson Spark, however.[18]
[edit] Authoring tools
[edit] Adobe Flash Professional
 | |
|---|---|
 Adobe Flash CS5 Professional (11.0.2.489) | |
| Developer(s) | Adobe Systems (formerly by Macromedia) |
| Stable release | CS5 (11.0.2) (September 7, 2010) [+/−] |
| Written in | C++ |
| Operating system | Microsoft Windows and Mac OS X |
| Type | Multimedia |
| License | Proprietary commercial software |
| Website | adobe.com/products/flash/flashpro/ |
The Adobe Flash Professional multimedia authoring program is used to create content for the Adobe Engagement Platform, such as web applications, games and movies, and content for mobile phones and other embedded devices.
[edit] History
Adobe Flash Professional is the successor of a software product known as FutureSplash Animator, a vector graphics and vector animations program released in May 1996. FutureSplash Animator was developed by FutureWave Software, a small software company whose first product, SmartSketch, was a vector-based drawing program for pen-based computers. In 1995, the company decided to add animation capabilities to their product and to create a vector-based animation platform for World Wide Web; hence FutureSplash Animator was created. Initially, the only way to deploy such animations on the web was through the use of Java platform; however, the Java platform was later replaced with the Netscape's plug-in architecture. The FutureSplash animation technology was used on several notable websites such as MSN, the official The Simpsons website and Disney Daily Blast of The Walt Disney Company.[19]
In December 1996, Macromedia bought FutureWave and so re-branded and released FutureSplash Animator as Macromedia Flash v1.0. In 2005, Adobe Systems acquired Macromedia; subsequently, in 2007, Adobe Flash CS3 Professional, the next version of Macromedia Flash was released.
| Release | Year | Description |
|---|---|---|
| FutureSplash Animator | 1996 | Initial version of Flash with basic editing tools and a timeline |
| Macromedia Flash 1 | 1996 | A re-branded version of the FutureSplash Animator |
| Macromedia Flash 2 | 1997 | Released with Flash Player 2, new features included: the object library |
| Macromedia Flash 3 | 1998 | Released with Flash Player 3, new features included: the movieclip element, JavaScript plug-in integration, transparency and an external stand alone player |
| Macromedia Flash 4 | 1999 | Released with Flash Player 4, new features included: internal variables, an input field, advanced ActionScript, and streaming MP3 |
| Macromedia Flash 5 | 2000 | Released with Flash Player 5, new features included: ActionScript 1.0 (based on ECMAScript, making it very similar to JavaScript in syntax), XML support, Smartclips (the precursor to components in Flash), HTML text formatting added for dynamic text |
| Macromedia Flash MX(6) | 2002 | Released with Flash Player 6, new features included: a video codec (Sorenson Spark), Unicode, v1 UI Components, compression, ActionScript vector drawing API |
| Macromedia Flash MX 2004(7) | 2003 | Released with Flash Player 7, new features included: Actionscript 2.0 (which enabled an object-oriented programming model for Flash, although it lacked the Script assist function of other versions, meaning Actionscript could only be typed out manually), behaviors, extensibility layer (JSAPI), alias text support, timeline effects. Macromedia Flash MX Professional 2004 included all Flash MX 2004 features, plus: Screens (forms for non-linear state-based development and slides for organizing content in a linear slide format like PowerPoint), web services integration, video import wizard, Media Playback components (which encapsulate a complete MP3 and/or FLV player in a component that may be placed in an SWF), Data components (DataSet, XMLConnector, WebServicesConnector, XUpdateResolver, etc.) and data binding APIs, the Project Panel, v2 UI components, and Transition class libraries. |
| Macromedia Flash 8 | 2005 | Macromedia Flash Basic 8, a less feature-rich version of the Flash authoring tool[citation needed] targeted at new users who only want to do basic drawing, animation and interactivity. Released with Flash Player 8, this version of the product has limited support for video and advanced graphical and animation effects. Macromedia Flash Professional 8 added features focused on expressiveness, quality, video, and mobile authoring. New features included Filters and blend modes, easing control for animation, enhanced stroke properties (caps and joins), object-based drawing mode, run-time bitmap caching, FlashType advanced anti-aliasing for text, On2 VP6 advanced video codec, support for alpha transparency in video, a stand-alone encoder and advanced video importer, cue point support in FLV files, an advanced video playback component, and an interactive mobile device emulator. |
| Adobe Flash CS3(9) Professional | 2007 | Flash CS3 is the first version of Flash released under the Adobe name. CS3 features full support for ActionScript 3.0, allows entire applications to be converted into ActionScript, adds better integration with other Adobe products such as Adobe Photoshop, and also provides better Vector drawing behavior, becoming more like Adobe Illustrator and Adobe Fireworks. |
| Adobe Flash CS4(10) Professional | 2008 | Contains inverse kinematics (bones), basic 3D object manipulation, object-based animation, a text engine, and further expansions to ActionScript 3.0. CS4 allows the developer to create animations with many features absent in previous versions. |
| Adobe Flash Professional CS5(10.1) | 2010 | Flash CS5 was released on April 12, 2010 and launched for trialling and normal buying on April 30, 2010. Flash CS5 Professional includes support for publishing iPhone applications.[20] However, on April 8, 2010 Apple changed the terms of its Developer License to effectively ban the use of the Flash-to-iPhone compiler[21] and on April 20, 2010 Adobe announced that they will be making no additional investments in targeting the iPhone and iPad in Flash CS5.[22] Other features of Flash CS5 are a new text engine (TLF), further improvement to inverse kinematics, and the Code Snippets panel. [23] |
[edit] Third-party tools
Open Source projects like Ajax Animator and the (now defunct) UIRA aim to create a Flash development environment, complete with a graphical user environment. Alternatively, programs such as Vectorian Giotto, swfmill, SWFTools, and MTASC provide tools to create SWF files, but do so by compiling text, actionscript or XML files into Flash animations. It is also possible to create SWF files programmatically using the Ming library, which has interfaces for C, PHP, C++, Perl, Python, and Ruby. haXe is an open source, high-level object-oriented programming language geared towards web-content creation that can compile Flash files.
Many shareware developers produced Flash creation tools and sold them for under US$50 between 2000 and 2002. In 2003 competition and the emergence of free Flash creation tools had driven many third-party Flash-creation tool-makers out of the market, allowing the remaining developers to raise their prices, although many of the products still cost less than US$100 and support ActionScript. As for open source tools, KToon can edit vectors and generate SWF, but its interface is very different from Macromedia's. Another, more recent example of a Flash creation tool is SWiSH Max made by an ex-employee of Macromedia. Toon Boom Technologies also sells a traditional animation tool, based on Flash.
In addition, several programs create .swf-compliant files as output from their programs. Among the most famous of these are Screencast tools, which leverage the ability to do lossless compression and playback of captured screen content in order to produce demos, tutorials, or software simulations of programs. These programs are typically designed for use by non-programmers, and create Flash content quickly and easily, but cannot actually edit the underlying Flash code (i.e. the tweening and transforms, etc.) Screencam is perhaps the oldest screencasting authoring tool to adopt Flash as the preferred output format, having been developed since the mid-90s. The fact that screencasting programs have adopted Flash as the preferred output is testament to Flash's presence as a ubiquitous cross-platform animation file format.
Other tools are focused on creating specific types of Flash content. Anime Studio is a 2D animation software package specialized for character animation which creates SWF files. Express Animator is similarly aimed specifically at animators. Question Writer publishes its quizzes to Flash file format.
Users who are not programmers or web designers will also find on-line tools that allow them to build full Flash-based websites. One of the oldest services available (1998) is FlashToGo. Such companies provide a wide variety of pre-built models (templates) associated to a Content Management System that empowers users to easily build, edit and publish their websites. Other sites, that allows for greater customization and design flexibility are Wix.com and CirclePad.
Adobe wrote a software package called Adobe LiveMotion, designed to create interactive animation content and export it to a variety of formats, including SWF. LiveMotion went through two major releases, but failed to gain any notable user base.
In February 2003, Macromedia purchased Presedia, which had developed a Flash authoring tool that automatically converted PowerPoint files into Flash. Macromedia subsequently released the new product as Breeze, which included many new enhancements. In addition, (as of version 2) Apple's Keynote presentation software also allows users to create interactive presentations and export to SWF.
[edit] User experience
Flash as a format has become widespread on the desktop market; one estimate is that 95% of PCs have it,[24] while Adobe claims that 98 percent of U.S. web users and 99.3 percent of all Internet desktop users have installed the Flash Player,[25][26][27] with 92 to 95% (depending on region) having the latest version.[28] Numbers vary depending on the detection scheme and research demographics.
The Adobe Flash Player exists for a variety of systems and devices: Windows, Mac OS 9/X, Linux, Solaris, HP-UX, Pocket PC/Windows CE, OS/2, QNX, Android, Symbian, Palm OS, BeOS, and IRIX, although the performance is typically best on Windows (see Performance). For compatibility with devices (embedded systems), see Macromedia Flash Lite.
Among mobile devices, Flash has less penetration because Apple does not bundle or allow third-party runtimes on its iPhone, which accounts for more than 60% of global smartphone web traffic, or the iPod touch, which makes up more than 95% of "mobile Internet device" traffic. This hurts Adobe's ability to market Flash as a ubiquitous mobile platform. However, Flash is enabled on competing mobile platforms, including the version 2.2 Android[29] while other O.S.s such as Symbian and Palm have versions coming.[citation needed]. On Mar 8, 2011, Techradar reported that Adobe provides an experimental server side tool (Wallaby) to convert Flash programs (as far as possible) to HTML5 code, thus allowing iOS devices to display the content.[30]
Downloading Flash is blocked in countries that are under U.S sanctions (such as Syria & Sudan). Users in these countries are blocked (by Adobe) from downloading Flash plug-ins for both Internet Explorer and Firefox browsers.[citation needed]
Flash content is usually embedded using the
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