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Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player versions 6–11. Flash Video content may also be embedded within SWF files. There are two different video file formats known as Flash Video: FLV and F4V. The audio and video data within FLV files are encoded in the same manner as they are within SWF files. The latter F4V file format is based on the ISO base media file format and is starting with Flash Player 9 update 3.^[1][2] Both formats are supported in Adobe Flash Player and currently developed by Adobe Systems. FLV was originally developed by Macromedia.

Flash Video has been accepted as the default online video format by many sites. Notable users of it include YouTube, Hulu, VEVO, Yahoo! Video, metacafe, Reuters.com, and many other news providers.

The standards documentation for BBC Online states that the BBC now preferentially accepts Flash videos for submission, to the disadvantage of other formats previously in use on its sites^[3] such as RealVideo or WMV.

Flash Video FLV files usually contain material encoded with codecs following the Sorenson Spark or VP6 video compression formats. The most recent public releases of Flash Player (collaboration between Adobe Systems and MainConcept) also support H.264 video and HE-AAC audio.^[4] All of these compression formats are currently restricted by patents.

Flash Video is viewable on most operating systems via the Adobe Flash Player and web browser plugin or one of several third-party programs. Apple's iOS devices do not support the Flash Player plugin and so require other delivery methods such as provided by the Adobe Flash Media Server.^[5]

History[link]

Support for video in SWF file format was added in Flash Player 6, released in 2002. In 2003, Flash Player 7 added direct support for FLV file format. Because of restrictions in the FLV file format, Adobe Systems has created in 2007 new file formats listed below, based on the ISO base media file format (MPEG-4 Part 12). Flash Player does not check the extension of the file, but rather looks inside the file to detect which format it is.^[6][7] The new file formats are completely different from the older FLV file format. For example, F4V does not support Screen video, Sorenson Spark, VP6 video compression formats and ADPCM, Nellymoser audio compression formats.^[1][7] Authors of Flash Player strongly encourage everyone to embrace the new standard file format F4V (ISO base media file format). There are functional limits with the FLV structure when streaming H.264 or AAC which could not be overcome without a redesign of the file format. This is one reason why Adobe Systems is moving away from the traditional FLV file structure.^[7]

SWF files published for Flash Player 6 and later versions are able to exchange audio, video, and data over RTMP connections with the Adobe Flash Media Server. One way to feed data to Flash Media Server is from files in the FLV file format. Starting with SWF files created for Flash Player 7, Flash Player can play FLV file format directly (MIME type video/x-flv). Starting with SWF files created for Flash Player 9 Update 3, Flash Player can also play the new F4V file format.^[1]

• Use of the H.264 and AAC compression formats in the FLV file format has some limitations and authors of Flash Player strongly encourage everyone to embrace the new standard F4V file format.^[7]

Encoding[link]

Commonly, Flash Video FLV files contain video bit streams which are a proprietary variant of the H.263 video standard,^[12] under the name of Sorenson Spark (FourCC FLV1).^[13][14] Sorenson Spark is an older codec for FLV files but it is also a widely available and compatible one, because it was the first video codec supported in Flash Player.^[15] It is the required video compression format for Flash Player 6 and 7.^[16][17] Flash Player 8 and newer revisions also support the playback of On2 TrueMotion VP6 video bit streams (FourCC VP6F or FLV4). On2 VP6 is the preferred video compression format for use with Flash Player 8 and higher.^[8][13] On2 VP6 can provide a higher visual quality than Sorenson Spark, especially when using lower bit rates. On the other hand it is computationally more complex and therefore will not run as well on certain older system configurations.^[16][18]

The Flash Video FLV file format supports two versions of a so called 'screenshare' (Screen video) codec which is an encoding format designed for screencasts. Both these formats are bitmap tile based, can be lossy by reducing color depths and are compressed using zlib. The second version is only playable in Flash Player 8 and newer.

Audio in Flash Video files is usually encoded as MP3. However, audio in Flash Video FLV files recorded from the user's microphone use the proprietary Nellymoser Asao Codec.^[9] (Flash Player 10 released in 2008 also supports the open source Speex codec.^[19]) FLV files also support uncompressed audio or ADPCM format audio. Recent versions of Flash Player 9 support AAC (HE-AAC/AAC SBR, AAC Main Profile, and AAC-LC).^[10]

Support for encoding Flash Video files is provided by an encoding tool included with Adobe's Flash Professional and Creative Suite products, On2's Flix encoding tools, Sorenson Squeeze, FFmpeg and other third party tools.

Media type support[link]

Supported media types in FLV file format:^[1]

• Video: On2 VP6, Sorenson Spark (Sorenson H.263), Screen video, H.264
• Audio: MP3, ADPCM, Linear PCM, Nellymoser, Speex, AAC, G.711 (reserved for internal use)

Supported media types in F4V file format:^[1]

• Video: H.264
• Images (still frame of video data): GIF, PNG, JPEG
• Audio: AAC, HE-AAC, MP3

FLV converters[link]

An FLV converter is a type of video conversion software that is used for turning videos from different formats into FLV. Below is a list of popular free video converters which supports conversion to FLV.

• SUPER (freeware)
• Free Studio (freeware)
• Freemake Video Converter (freeware)
• Format Factory (freeware)
• HandBrake Video Converter (GPL-licensed free software)

These programs run under Windows7/Vista/XP. HandBrake also under Mac OS X and Linux.

FLV File Structure[link]

Header[link]

FLV files start with a standard header which is shown below:^[20]

Tags[link]

Followed the header, the file is split into packets called FLV tags which are delineated by 11-byte headers and 4-byte footers. The first byte of the tag denotes the packet type as follows:

• 0 × 12 – Metadata packet
• 0 × 08 – Audio packet
• 0 × 09 – Video packet

FLV Tag Structure

Following that, we find 3 bytes denoting length, 3 denoting the timestamp and 4 denoting the stream id. There is a direct relation between the fields encountered in an FLV Tag and those found in a RTMP packet, as for example the FLV Packet Type field uses the same numeric values as the RTMP Chunk Type field (ex. 0 × 08 for audio and 0 × 09 for video). FLV tags are thus converted into RTMP packets when the file is streamed through a Flash Media Server or equivalent RTMP Server. Each tag ends with 4 bytes denoting the total length of the packet which is the length found in the header plus 11 bytes for the header. Between the tag header and footer is found the compressed media data that will eventually be passed to the codec.

The first packet encountered is usually a metadata packet which contains information such as

• width/height – as an integer
• duration
• framerate
• keyframes – an array with the positions of p-frames, needed when random access is sought.

When streamed using an Actionscript built player, the metadata values above are passed as arguments on the onMetaData callback function.

FLV players[link]

An FLV player is a type of media player that is used for playing Flash video from PC as well as from Internet websites. An FLV player can be used standalone, without the need of the Adobe Flash authoring or developmental tools. It can also be embedded in the website using Flash component or embeddable version of FLV player.

Flash Player[link]

The Adobe Flash Player is a multimedia and application player originally developed by Macromedia and acquired by Adobe Systems. It plays SWF files, which can be created by the Adobe Flash authoring tool, Adobe Flex, or a number of other Adobe Systems and 3rd party tools. It has support for a scripting language called ActionScript, which can be used to display Flash Video from an SWF file. Because the Flash Player runs as a browser plug-in, it is possible to embed Flash Video in web pages and view the video within a web browser.

Flash Player 9 Update 3, released on 3 December 2007,^[21] also includes support for the new Flash Video file format F4V and H.264 video standard (also known as MPEG-4 part 10, or AVC) which is even more computationally demanding, but offers significantly better quality/bitrate ratio.^[22] Specifically, Flash Player now supports 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 video (e.g. created with DivX or Xvid) is not supported.^[6] In an interview with BBC News, the main programmer of Flash Jonathan Gay said that the company had wanted to use H.264 when video support was originally added to Flash, but had been deterred by the patent licensing fees of around $5million (£3.5million) per year.^[23]

Desktop-based[link]

Microsoft Windows, Mac OS X, Unix-based

• Adobe Media Player (freeware) (no longer published or supported by Adobe)
• Media Player Classic (free software)
• MPlayer (free software)
• RealPlayer (freeware)
• VLC media player (free software)
• Winamp (freeware)

Mac OS devices can play flash videos in QuickTime with the help of additional software (such as the open source Perian component.)
IrfanView (freeware)'s plugins package supports FLV if the IE version of Flash Player is installed; and, unlike some of the above listed players, it is small and has neither advertisements, nor registration (for home use), nor license-legalese.

PDA-based and smartphone-based[link]

Windows Mobile, PalmOS-based

• The Core Pocket Media Player (open source software)

The iPhone and Android devices can play flash videos with the help of additional software (such as the Skyfire web browser application.) Versions of Android above 2.1 support flash unlike Apple's iOS.

Delivery options[link]

Flash Video files can be delivered in several different ways:

• As a standalone .FLV file. Although Flash Video files are normally delivered using a Flash player for control, the .FLV file itself is only playable with an FLV player. There are several third party players available.
• Embedded in an SWF file using the Flash authoring tool (supported in Flash Player 6 and later). The entire file must be transferred before playback can begin. Changing the video requires rebuilding the SWF file.
• Progressive download via HTTP (supported in Flash Player 7 and later). This method uses ActionScript to include an externally hosted Flash Video file client-side for playback. Progressive download has several advantages, including buffering, use of generic HTTP servers, and the ability to reuse a single SWF player for multiple Flash Video sources. Flash Player 8 includes support for random access within video files using the partial download functionality of HTTP, sometimes this is referred to as streaming. However, unlike streaming using RTMP, HTTP "streaming" does not support real-time broadcasting. Streaming via HTTP requires a custom player and the injection of specific Flash Video metadata containing the exact starting position in bytes and timecode of each keyframe. Using this specific information, a custom Flash Video player can request any part of the Flash Video file starting at a specified keyframe. For example, Google Video, Youtube, and Bitgravity support progressive downloading and can seek to any part of the video before buffering is complete. The server-side part of this "HTTP pseudo-streaming" method is fairly simple to implement, for example in PHP, as an Apache module, or using lighttpd.
• Streamed via RTMP to the Flash Player using the Flash Media Server (formerly called Flash Communication Server), VCS, ElectroServer, Helix Universal Server, Wowza Media Server, WebORB for .NET, WebORB for Java, erlyvideo (in erlang), or the open source Red5 server. As of April 2008, there are stream recorders available for this protocol, re-encoding screencast software excluded.
• Flash Media Server 4.5 allows Flash video streaming to iPhones and iPads. It achieves this by delivering the content in an MPEG-2 stream using the HTTP Live Streaming format.^[24]

Flash video recording[link]

It is possible to record online flash videos using stream recorders and screen video capture software. The former gives lossless results, while the latter allows recording any video even when anti-leeching measures are used.^{[citation needed]}

See also[link]

	Information technology portal
	Internet portal

• Local Shared Object
• SWFObject

References[link]

External links[link]

• Flash Developer Center – Flash Video Articles
• Flash Video (FLV) File Format Specification (adobe.com)
• List of codecs supported by Adobe Flash Player versions from 6 to 9 (adobe.com)
• Macromedia Flash FLV Video File Format (Library of Congress)

This article may require copy editing for grammar, style, cohesion, tone, or spelling. You can assist by editing it. (March 2012)

The Justice League, also called the Justice League of America or JLA, is a fictional superhero team that appears in comic books published by DC Comics.

First appearing in The Brave and the Bold #28 (February/March 1960), the Justice League originally appeared with the line-up of Superman, Batman, Wonder Woman, Flash (Barry Allen), Green Lantern (Hal Jordan), Aquaman, and the Martian Manhunter. The team roster has been rotated throughout the years with characters such as Green Arrow, Captain Marvel, Black Canary, the Atom, Hawkman, Hawkgirl, Plastic Man, Red Tornado, Firestorm, Zatanna, other Green Lanterns, and dozens of others. The team received its own comic book title in October 1960, when the first issue was published, and would continue to #261 in April 1987, which was the final issue. Throughout the years, various incarnations or subsections of the team have operated as Justice League America, Justice League Europe, Justice League International, Justice League Task Force, Justice League Elite, and Extreme Justice.

Various comic book series featuring the Justice League have remained generally popular with fans since inception and in most incarnations, its roster includes DC's most popular characters. The Justice League concept has also been adapted into various other entertainment media, including the classic Saturday morning Super Friends animated series (1973–1986), an unproduced Justice League of America live-action series, and most recently the animated series Justice League (2001–2004) and Justice League Unlimited (2004–2006). A live-action film was in the works in 2008 before being shelved.

Publication history[link]

[edit] Silver and Bronze Age / Justice League of America

Having successfully reintroduced a number of their Golden Age superhero characters (Flash, Green Lantern, etc.) during the late 1950s, editor Julius Schwartz asked writer Gardner Fox to reintroduce the Justice Society of America. Schwartz, influenced by the popularity of Major League Baseball's National League and American League, decided to change the name of the team from Justice Society to Justice League.^[1] The Justice League of America debuted in The Brave and the Bold #28 (February–March 1960),^[2] and after two further appearances in that title, got their own series which quickly became one of the company's best-selling titles. Fox and artist Mike Sekowsky were the creative team for the title's first eight years. Sekowsky's last issue was #63 (June 1968) and Fox departed with #65 (September 1968). Schwartz was the new title's editor and would oversee it until 1979.^[3]

The initial Justice League lineup included seven of the DC superheroes being published regularly at that time:Superman, Batman, Aquaman, Flash, Green Lantern, Martian Manhunter, and Wonder Woman. Superman and Batman barely featured in most of the stories, not even appearing on the cover most of the time. Three of DC's other surviving or revived characters, Green Arrow,^[4] the Atom,^[5] and Hawkman^[6] were added to the roster over the next four years. The title's early success was indirectly responsible for the creation of the Fantastic Four. In his autobiography Stan Lee relates how, during a round of golf, DC publisher Jack Liebowitz mentioned to Marvel-Timely owner Martin Goodman how well DC's new book (Justice League) was selling. Later that day Goodman told Lee to come up with a team of superheroes for Marvel; Lee and Jack Kirby produced the Fantastic Four.^[7][8]

The Justice League operated from a secret cave outside of the small town of Happy Harbor, Rhode Island. A teenager named Lucas "Snapper" Carr tagged along on missions, and he became both the team's mascot and an official member. Snapper, noted for speaking in beatnik dialect and snapping his fingers, helped the group defeat the giant space starfish Starro the Conqueror in the team's first appearance. The supervillain Doctor Light first battle the team in issue #12 (June 1962).^[9] Justice League of America #21 and #22 (August–September 1963) saw the first team-up of the Justice League and the Justice Society of America as well as the first use of the term "Crisis" in reference to a crossover between characters.^[10] The folowing year's team-up with the Justice Society introduced the threat of the Crime Syndicate of America of Earth-Three.^[11] The character Metamorpho was offered membership in the Justice League but declined.^[12] Following the departures of Gardner Fox and Mike Sekowsky, writer Denny O'Neil and artist Dick Dillin became the new creative team. Dillin would draw the title from issue #64 (August 1968) through #183 (October 1980)^[13]

O'Neil reshaped the Justice League's membership by removing Wonder Woman in issue #69 and the Martian Manhunter in issue #71.^[14] Following the JLA-JSA team-up in issues #73-74 and the death of her husband, the Black Canary decides to move to Earth-One to make a fresh start, where she joins the Justice League.^[15] The following issue saw the character develop the superpower known as her "canary cry".^[16] In issue #77 (December 1969), Snapper Carr is tricked into betraying the cave headquarters' secret location to the Joker, resulting in his resignation from the team as well.^[17]

Satellite years[link]

In need of a new secure headquarters, the Justice League moved into an orbiting satellite headquarters in Justice League of America #78 (February 1970).^[18] The Elongated Man,^[19] the Red Tornado,^[20] Hawkwoman,^[21] Zatanna,^[22] and Firestorm^[23] joined the team during this period, and Wonder Woman returned.

Len Wein wrote issues #100–114 wherein he and Dillin re-introduced the Seven Soldiers of Victory in issues #100-102^[24] and the Freedom Fighters in issues #107-108.^[25] In the fall of 1972, Wein and writers Gerry Conway and Steve Englehart crafted a metafictional unofficial crossover spanning titles from both major comics companies. Each comic featured Englehart, Conway, and Wein, as well as Wein's first wife Glynis, interacting with Marvel or DC characters at the Rutland Halloween Parade in Rutland, Vermont. Beginning in Amazing Adventures #16 (by Englehart with art by Bob Brown and Frank McLaughlin), the story continued in Justice League of America #103 (by Wein, Dillin and Dick Giordano), and concluded in Thor #207 (by Conway and penciler John Buscema). As Englehart explained in 2010, "It certainly seemed like a radical concept and we knew that we had to be subtle (laughs) and each story had to stand on its own, but we really worked it out. It's really worthwhile to read those stories back to back to back — it didn't matter to us that one was at DC and two were at Marvel — I think it was us being creative, thinking what would be really cool to do."^[26][27][28] Libra, a supervillain created by Wein and Dillin in Justice League of America #111 (May–June 1974),^[29] would play a leading role in Grant Morrison's Final Crisis storyline in 2008.

Writers Cary Bates and Elliot S. Maggin wrote themselves into the 1975 JLA-JSA crossover in issues #123 and 124 with Bates becoming a supervillain.^[30][31]

Wonder Woman rejoined the team following a major two-year story arc largely written by Martin Pasko. To prove her worthiness to rejoin the JLA, Wonder Woman voluntarily underwent twelve trials analogous to the labors of Hercules, each of which was monitored in secret by a member of the JLA.^[32] After the conclusion of the storyline in Wonder Woman #222, the character's return to the JLA occurred in a two-part story in Justice League of America #128-129 (March–April 1976).^[33]

Steve Englehart wrote the series beginning with issue #139 and provided another unofficial crossover with Marvel Comics in issue #142 by reworking his character Mantis into the DC Universe as a character named "Willow".^[34] Englehart left the title with issue #150.

Writer Gerry Conway had a lengthy association with the title as well. His first JLA story appeared in issue #125 (December 1975) and he became the series' regular writer with issue #151 (February 1978). With a few exceptions, Conway would write the team's adventures until issue #255 (October 1986).^[35] Julius Schwartz, who had edited the title since the first issue, left the series as of issue #165 (April 1979).^[3] The 1979 crossover with the Justice Society in issues #171 and 172 saw the death of the original Mister Terrific.^[36] After Dick Dillin's death, George Pérez, Don Heck, and Rich Buckler would rotate as artist on the title. The double-sized anniversary issue #200 (March 1982) was a "jam" featuring a story written by Conway, a framing sequence drawn by Pérez, and chapters drawn by Pat Broderick, Jim Aparo, Dick Giordano, Gil Kane, Carmine Infantino, Brian Bolland, and Joe Kubert. Bolland's chapter gave the artist his "first stab at drawing Batman."^[37] Pérez would leave the title as of issue #200^[38] to concentrate on The New Teen Titans although he would contribute covers to the JLA through issue #220 (November 1983). The 1982 team-up with the Justice Society in issues #207-209 crossed over with All-Star Squadron #14-15.^[39][40]

Detroit[link]

Seeking to capitalize on the popularity of their other team books, which focused upon heroes in their late teens/early 20s, Gerry Conway and artist Chuck Patton revamped the Justice League series. After most of the original heroes failed to arrive in order to help the team fend off an invasion of Martians, Aquaman dissolved the League and reformatted its charter to only allow heroes who would devote their full time to the roster.^[41] The new team initially consisted of Aquaman, Zatanna, Martian Manhunter, Elongated Man, the Vixen, and a trio of teenage heroes Gypsy, Steel, and Vibe.^[42] Aquaman would leave the team after a year and was replaced as leader by the Martian Manhunter. Because of his own edict of only wanting full-time heroes in the League, Aquaman's estranged wife Mera gave him an ultimatum to stay with either the group or with her to salvage their marriage.

Fan response to the series' new direction was largely negative and even the return of Batman to the team in Justice League of America #250 could not halt the decline of the series. Reader sentiment regarding this incarnation of the Justice League has since been metatextually reflected in the comics themselves. In volume 2 issue #31 (May 2009), Zatanna says, "With our current line-up we couldn't beat Justice League Detroit!" to which Dr. Light responds, "Don't be ridiculous. Everybody can beat Detroit!" The final storyline for the original Justice League of America series (#258-261) by writer J. M. DeMatteis and artist Luke McDonnell,^[43] culminated a story-arc involving long-time Justice League enemy Professor Ivo's murders of Vibe and Steel and the resignations of Vixen, Gypsy, and the Elongated Man during the events of DC's Legends mini-series, which saw the team disband.

Modern incarnations[link]

[edit] Justice League International

The 1986 company-wide crossover "Legends" concluded with the formation of a new Justice League. The new team was dubbed "Justice League" then "Justice League International" (JLI) and was given a mandate with less of an American focus. The new series, written by Keith Giffen and J. M. DeMatteis with art by Kevin Maguire^[44] (and later Adam Hughes), added quirky humor to the team's stories. In this incarnation, the membership consisted partly of heroes from Earths that, prior to their merging in the Crisis on Infinite Earths, were separate. The initial team included Batman, Black Canary, Blue Beetle, Captain Marvel, Doctor Light (a new Japanese female character, emerging from the Crisis of Infinite Earths, not the supervillain who had appeared previously), Doctor Fate, Martian Manhunter, Mister Miracle, and Guy Gardner; and soon after inception, added Booster Gold, Captain Atom, Fire (then known as the Global Guardians' Green Flame), Ice (then known as the Global Guardians' Icemaiden), and two Rocket Reds (one was a Manhunter spy, and one was Dimitri Pushkin). The Giffen/DeMatteis team worked on Justice League for five years and closed out their run with the "Breakdowns" storyline in 1991 and 1992.^[45] The series' humorous tone and high level of characterization proved very popular.

After Giffen and DeMatteis' departure, new writers gave the storylines a more serious tone. Though initially showing enough promise that DC created numerous spin-off titles, in the long run these incarnations of the League proved much less popular than the Giffen/DeMatteis era had. In 1996, the series was canceled, along with spinoffs Justice League Europe, Extreme Justice, and Justice League Task Force.

[edit] JLA

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The low sales of the various Justice League spinoff books prompted DC to revamp the League as a single team (all the various branch teams were disbanded) on a single title. A Justice League of America formed in the September 1996 limited series Justice League: A Midsummer's Nightmare by Mark Waid and Fabian Nicieza, which reunited the "Original Seven" of the League for the first time since Crisis on Infinite Earths. In 1997, DC Comics launched a new Justice League series titled JLA, written by Grant Morrison with art by Howard Porter and inker John Dell.^[46]

This series, in an attempt at a "back-to-basics" approach, used as its core the team's original seven members (or their successors): Superman, Batman, Wonder Woman, Aquaman, Flash (Wally West), Green Lantern (Kyle Rayner), and the Martian Manhunter. Additionally, the team received a new headquarters, the "Watchtower", based on the Moon. JLA quickly became DC's best-selling title,^[47] a position it enjoyed off and on for several years. ^[48]

Morrison introduced the idea of the JLA allegorically representing a pantheon of gods, with their different powers and personalities, incorporating such characters as Zauriel, Big Barda, Orion, Huntress, Barbara Gordon (Oracle), Steel (John Henry Irons), and Plastic Man. He also had temporaries as Aztek, Tomorrow Woman, and Green Arrow (Connor Hawke).

Under Morrison, the series pitted the League against a variety of enemies. These included White Martians, renegade angels, a new incarnation of the Injustice Gang led by Lex Luthor, and the Key. Other foes were the new villain Prometheus, the existing JLA villain Starro the Conqueror, "The Ultra-Marines", and a futuristic Darkseid. Morrison's run culminated in an arc title "World War III" which involves the New Gods preparing the Earth for battle against a creature known as "Maggedon", a super-sentient weapon of mass destruction.

Morrison departed with issue #41, after which the book saw runs by Mark Waid and Joe Kelly. Subsequent to this, the series switched to a series of rotating writers with issue #91 while Kelly (via JLA #100) was given a the mini-series Justice League Elite, which featured Green Arrow, Flash, and several other characters. The new format saw stories by John Byrne, Chuck Austen, and Kurt Busiek. Geoff Johns and Allan Heinberg would take over the book with #115, which saw a multi-part storyline that dealt with the aftermath of Identity Crisis, and served as a lead-in to the events of "Infinite Crisis", as Superboy-Prime destroyed the Watchtower at the end of issue #119. Bob Harras would ultimately write the book's final storyline (JLA #120-125) as Green Arrow struggled in vain to keep the League afloat.

[edit] 52

In 52 Week 24, Firestorm recruits a group to reform the Justice League. It consists of Firehawk, Super-Chief, Bulleteer, and Ambush Bug. They fight a deranged Skeets who takes Super-Chief's powers and kills him as well as numerous people given powers by Lex Luthor's Everyman Project. Afterward, Firestorm breaks up the team.

Also in the series, Luthor's new Infinity, Inc. was informally referred to as a "Justice League" in solicitations and on covers.

[edit] Justice League of America (vol. 2)

One year after the events of Infinite Crisis, Superman, Batman, and Wonder Woman reunite in the Batcave to re-form the League in Justice League of America #0, the kick-off for a new series by Brad Meltzer and Ed Benes.^[49] The series featured a roster which included Green Lantern (Hal Jordan), Black Canary, Red Arrow (Green Arrow's former sidekick), Red Tornado, Vixen, Black Lightning, and Hawkgirl. The first arc of the series focused upon Red Tornado and pitted the team against a new intelligent incarnation of Solomon Grundy and the rebuilt Amazo. The new incarnation of the team has two main headquarters, linked by a transporter. The first site is The Hall, which in mainstream DC Universe is a refurnished version of the Justice Society of America and the All-Star Squadron's former headquarters located in Washington, D.C. Black Canary is elected as the first official Chairperson after the fight against Amazo and Solomon Grundy, and led both the Justice League and Justice Society in a complex quest to reunite time-lost members of the pre-Crisis Legion of Super-Heroes, who had been sent back in time to free both Bart Allen and Flash from the other dimensional realm of the Speed Force. Meltzer left the series at the end of issue #12, with one of his subplots (Per Degaton, a pre-nuclear fire mutation version of Despero, and a circa 1948 version of the Ultra-Humanite gathering for an unknown plot) resolved in the pages of Booster Gold.

Dwayne McDuffie took over the writing job with the Justice League Anniversary Special and the main book with issue #13. Due to DC Comics seeking to launch a spin-off Justice League book led by Hal Jordan, the character was removed from the main League series and replaced by John Stewart. Firestorm also joined the roster, with the series entering into a series of tie-in storylines towards Countdown to Final Crisis, with the arrest of a large number of supervillains (gathered by Lex Luthor and Deathstroke to attack the League on the eve of the wedding of Black Canary and Green Arrow) setting up the Salvation Run tie-in miniseries. Also, roster members Red Tornado and Geo-Force were written out. McDuffie's initial issues received mixed reviews and experienced minor conroversy due to fan favorite Hal Jordan's removal in favor of Stewart. Jordan ended up being restored to the roster by issue #19 of the series, only to be removed once again by issue #31 once Justice League: Cry for Justice was completed and ready to be shipped.

Issue #21 saw the return of Libra and the Human Flame, setting up their appearances in Final Crisis. Later issues would resolve issues involving Vixen's power level increase and see the integration of the Milestone Comics characters the Shadow Cabinet and Icon, who fought the Justice League over the remains of the villainous Doctor Light. The group suffered greater losses during Final Crisis with the deaths of Martian Manhunter and Batman, as well as the resignations of Superman and Wonder Woman, who could no longer devote themselves full-time to the League due to the events of the New Krypton and Rise of the Olympian storylines in their respective titles. Hal Jordan would also resign as well, clearing the way for John Stewart's return to the team. Black Canary found herself declaring the League no more, though the group would continue with Canary taking a secondary role in the group. Her last act as leader would be assigning John Stewart and Firestorm the task of hunting down the Human Flame, for his part in the murder of Martian Manhunter, as seen in the Final Crisis Aftermath: Run! miniseries.

Vixen would take over the team, with Plastic Man rejoining the group. Len Wein wrote a three-part fill-in story for Justice League of America^[50] that ran from #35 to #37. McDuffie was fired from the title before he could return, after discussion postings to the DC Comics message board, detailing behind-the-scenes creative decisions on his run, were republished in the rumor column "Lying In The Gutter".^[51] James Robinson was announced as the new Justice League of America writer.^[52]

Wein's fill-in run would be published as Justice League: Cry For Justice neared its conclusion, as Vixen and Black Canary's group (sans John Stewart) would confront Hal Jordan and Green Arrow's makeshift Justice League group, which had stumbled upon a plot by the villain Prometheus that had resulted in much death and carnage. During the confrontation over Jordan's group using torture to extract information from the villains being blackmailed into carrying out Prometheus' plan, both Roy Harper and Supergirl would discover that one of Jordan's heroes, Captain Marvel Jr., was really Prometheus in disguise. In the ensuing battle, the League would suffer horrible losses: Roy Harper was maimed and his daughter Lian and hundreds of thousands of people in Star City would be killed by a doomsday device Prometheus activated. Vixen would have her leg broken and Plastic Man would have his powers permanently scrambled, making him a slowly disintegrating puddle creature. To save other cities from being destroyed like Star City, the League reluctantly allowed Prometheus to go free. Green Arrow (with help from the Shade) would track down and kill Prometheus.

Following the events of "Blackest Night", Hal Jordan and Donna Troy begin the task of rebuilding the League, with Green Arrow, the Atom, Batman, Mon-El, Donna, Cyborg, Doctor Light, Starfire, Congorilla, and the Guardian.

At the end of issue #43, the majority of the new members leave for various reasons. Mon-El and the Guardian leave after Mon-El returns to the future, Black Canary returns to the Birds of Prey, Starfire leaves to join the R.E.B.E.L.S., Green Lantern leaves to locate the other Lantern Corps Entities, and Green Arrow is forced to leave due to his fugitive status. James Robinson revealed this was due having second thoughts about his decision to use so many characters, and revealed that the team would have a different roster in the coming months.^[53] To replace the departed members, Jade and Jesse Quick were added to the team. Cyborg remained with the team in a reduced capacity, and was eventually given his own co-feature storyline for issues 48–50.^[54]

DC announced that Saint Walker of the Blue Lantern Corps would be joining the Justice League during a tie-in to the Reign of Doomsday crossover, but the character did not become a full member due to the cancellation of the title.^[55]

The series ended with issue #60 (October 2011), with the title being one of the numerous DC books cancelled after the Flashpoint crossover. The issue saw Batman disbanding the League due to most of the individual members becoming preoccupied with personal commitments.

The New 52[link]

In September 2011, following the conclusion of the Flashpoint miniseries, all DC titles were canceled and relaunched from issue #1, with DC continuity being rebooted again. Justice League of America was relaunched as Justice League, written by Geoff Johns and drawn by Jim Lee, and was the first of the new titles released, coming out the same day as the final issue of Flashpoint.^[56] The first six issues were set five years in the past and featured a brand new origin for the team,^[57] while issue 7 and beyond will take place in the present day.^[58]

The starting line-up of the team consists of Superman, Batman, Wonder Woman, Green Lantern (Hal Jordan), Aquaman, the Flash (Barry Allen), and Cyborg,^[59][60] while the Atom (Ryan Choi), Hawkman (Carter Hall), Firestorm (Ronnie Raymond), Green Arrow (Oliver Queen), Aquaman's wife Mera, Deadman, recently created character Element Woman,^[61] and Lady Luck, a revamp of the Golden Age character, are set to join as additional members in the future.^[62]

In addition to this series, two other Justice League-related titles were launched during the same month: a new Justice League International; written by Dan Jurgens and drawn by Aaron Lopresti;^[63] featuring an initial roster of Batman, Booster Gold, Rocket Red (Gavril Ivanovich), Vixen, Green Lantern (Guy Gardner), Fire, Ice, August General in Iron,^[64] and Godiva, and Justice League Dark; written by Peter Milligan and drawn by Mikel Janin; featuring a roster consisting of John Constantine, Shade, the Changing Man, Madame Xanadu, Deadman, Zatanna, and the new character Mindwarp.^[65]

Various origins of the Justice League[link]

In a story told in flashback in Justice League of America #9 (February 1962), Earth was infiltrated by the Appelaxians.^[66] Competing alien warriors were sent to see who could conquer Earth first to determine who will become the new ruler of their home planet. The aliens' attacks drew the attentions of Superman, Batman, Wonder Woman, Flash (Barry Allen), Green Lantern (Hal Jordan), Aquaman, and Martian Manhunter. While the superheroes individually defeated most of the invaders, the heroes fell prey to a single competitor's attack; only by working together were they able to defeat the competitor. For many years, the heroes heralded this adventure as the event that prompted them to agree to pool resources when confronted with similar menaces.

In Justice League of America #144 (July 1977), Green Arrow uncovered inconsistencies in the team's records^[67] and extracted admissions from his colleagues that the seven founders had actually formed the League after the Martian Manhunter was rescued from Martian forces by the other six founders, along with several other heroes including Robin, Robotman, Congo Bill/Congorilla, Rex the Wonder Dog, and even Lois Lane. Green Lantern participated in this first adventure solely as Hal Jordan, due to the fact that he had yet to become the costumed hero at that time (the biggest inconsistency Arrow found, as they celebrated the earlier incident's date, while recounting only the later one's events). When the group formalized their agreement, they suppressed news of it because of anti-Martian hysteria. Because the heroes had not revealed their identities to each other at the time, they did not realize that Jordan and Green Lantern were one and the same when he turned up in costume during the event described in #9. While most subsequent accounts of the League have made little mention of this first adventure, the animated Justice League series adapted this tale as the origin of the Justice League as well.

Secret Origins (vol. 2) #32 (November 1988) updated Justice League of America #9's origin for post-Crisis continuity. Differences included the inclusion of the original Black Canary as a founding member and the absence of Batman, Wonder Woman, and Superman. The JLA: Year One limited series, by Mark Waid, Brian Augustyn, and Barry Kitson, further expanded upon the Secret Origins depiction.^[68]

In Justice League Task Force #16 (Sept. 1994), during Zero Hour, an unknown superhuman named Triumph appeared. Triumph was revealed to have been a founding member of the Justice League and was their leader. On his first mission with the fledgling Justice League Triumph seemingly "saved the world" but was teleported into a dimensional limbo that also affected the timestream, resulting in no one having any memory of him.

In Infinite Crisis #7 (June 2006), the formation of "New Earth" (the new name for the post-Crisis Earth) restored Wonder Woman as a founding member of the Justice League. In Brad Meltzer's Justice League of America (vol. 2) #0 (September 2006), it was revealed that Superman and Batman were again founding members as well. 52 #51 (June 2007) confirmed that the 1989 Secret Origins and JLA: Year One origins were still in continuity at that time, with Superman, Batman, and Wonder Woman joining the team with founding members' status shortly after the group's formation with Aquaman, Black Canary, Flash, Green Lantern, and Martian Manhunter.^[69] In Justice League of America #12 (October 2007), the founding members of the Justice League were shown to be Superman, Batman, Wonder Woman, Green Lantern (Hal Jordan), Flash (Barry Allen), Aquaman, and the Martian Manhunter.

With DC's history rewritten due to the Flashpoint limited series, an entirely new origin for the Justice League was introduced in the subsequent Justice League series which debuted with an October 2011 cover date as part of the company-wide event, The New 52. Issue #1 portrayed the first meeting between Batman and Hal Jordan, with the two encountering each other during a battle against a Parademon in Gotham City. After realizing the creature is extraterrestrial in origin, the two heroes head to Metropolis to seek out Superman and are attacked by him.^[70] Later, after a brief fight in which the Flash arrives and Batman convinces Superman they are on the same side, they move to an abandoned building to work on analyzing a mysterious alien box, when it suddenly activates and more Parademons arrive.^[71] While fighting the Parademons, Aquaman and Wonder Woman appear and join forces with the other heroes.^[72] The mysterious box leads to Darkseid's arrival on Earth, and the heroes come together, along with newcomer Cyborg, to defeat him. The public are enamoured with the heroes, and a writer dubs the group the 'Justice League', following the Flash's suggestion of 'Super Seven'.^[73]

Related series[link]

[edit] Formerly Known as the Justice League

In 2003, Giffen, DeMatteis, and Maguire returned with a separate limited series called Formerly Known as the Justice League^[74] with the same humor as their Justice League run, and featuring some of the same characters in a team called the "Super Buddies" (a parody of the Super Friends). A follow-up limited series, entitled I Can't Believe It's Not the Justice League, soon was prepared, although it was delayed due to the events shown in the Identity Crisis limited series, but was eventually released as the second arc in JLA: Classified. The Super Buddies consisted of Blue Beetle; Booster Gold; Captain Atom, Fire; Mary Marvel; the Elongated Man with his wife, Sue Dibny; Maxwell Lord; and L-Ron. The second story arc of JLA: Classified focuses on the Super Buddies in a humorous story that features Power Girl, Guy Gardner, and Doctor Fate.

[edit] JLA/Avengers

In 2003-2004, George Pérez and Kurt Busiek produced a JLA/Avengers crossover,^[75] an idea that had been delayed for 20 years for various reasons. In this limited series, the Justice League and the Avengers were forced to find key artifacts in one another's universe, as well as deal with the threats of villains Krona and the Grandmaster.

[edit] JLA: Classified

In 2004, DC began an anthology series titled JLA: Classified, which would feature rotating writers and artists producing self-contained story-arcs and aborted mini-series projects that were reappropriated for publication within the pages of the series, starring the JLA. While the bulk of the stories took place within the continuity of the series (circa JLA #76–113) some of the stories take place outside of regular DC Universe canon. The series was canceled as of issue #54 (May 2008).

[edit] Justice

In October 2005, DC began publishing the 12-issue miniseries Justice by writer Jim Krueger, writer/illustrator Alex Ross, and artist Doug Braithwaite. The story, which takes place outside regular DC continuity, has Lex Luthor assembling the Legion of Doom after he and several other villains begin to have nightmares about the end of the world and the failures of the Justice League to prevent said apocalypse. As the Legion begins engaging in unprecedented humanitarian deeds throughout the world, they also launch a series of attacks on the Justice League and their families. The threat that the Legion was warned about destroying the Earth turns out to be caused by Brainiac, who seeks to destroy Earth during the chaos.

[edit] Justice League: Cry for Justice

Originally a planned ongoing title, Justice League: Cry For Justice is a mini-series written by James Robinson and drawn by Mauro Cascioli. The mini-series, set after the events of Final Crisis, has Hal Jordan leaving the League following the deaths of Batman and Martian Manhunter, as their deaths have caused Hal to seek out a more proactive manner of dealing with super-villains. Hal, along with Green Arrow and later Supergirl, Captain Marvel Jr., and Batwoman are then recruited by Ray Palmer to investigate a murder of a former colleague carried out on orders from Prometheus. This ties into another string of murders, bringing Starman Mikaal Tomas and Congorilla together as their investigation of the murders of several European super-heroes are also revealed to be the work of Prometheus.

With help from the Hawkman villain I.Q., Prometheus plans on creating the ultimate weapon in mass murder, a massive doomsday device which he plans on using to destroy entire cities, as part of his revenge scheme against the JLA for lobotomizing him. Disguised as Captain Marvel Jr., Prometheus maims Roy Harper and brutally injuring JLA members Dr. Light II, Vixen, and Plastic Man while using the JLA Satellite to activate his doomsday device, which destroys Star City, killing 90,000 innocent civilians, including Roy Harper's young daughter Lian. Prometheus ultimately extorts his freedom from the League in exchange for the codes to shut down his weapon, much to the horror of the JLA members. Green Arrow (with help from reformed villain the Shade), tracks Prometheus down and kills him by firing an arrow into his head.

The mini-series leads directly into the formation of a brand new JLA roster with Green Lantern Hal Jordan, Donna Troy, Dick Grayson as Batman, Doctor Light (Kimiyo Hoshi), Mon-El, Cyborg, Starfire, Congorilla, Guardian, and Mikaal Tomas.

[edit] JLA/The 99

Launching in October 2010, JLA/The 99 was a crossover mini-series featuring the Justice League teaming up with the heroes of Teshkeel Comics' The 99 series. The JLA consisted of Batman, Superman, Wonder Woman, Green Lantern (John Stewart), the Flash (Barry Allen), the Atom (Ray Palmer), Doctor Light (Kimiyo Hoshi), Hawkman, and Firestorm (Jason Rusch).

Awards[link]

The original Justice League of America series has won:

• 1961 Alley Awards for Best Comic Book
• 1961 Alley Awards for Best Adventure-Hero Group
• 1963 Alley Awards for Favorite Novel ("Crisis on Earth-One/Crisis on Earth-Two" in Justice League of America #21-22 by Gardner Fox and Mike Sekowsky)
• 1963 Alley Awards for Strip that Should Be Improved
• 1963 Alley Awards for Artist Preferred on Justice League of America (Murphy Anderson)
• 1973 Shazam Awards for Best Inker (Dramatic Division) (Dick Giordano)

Collected editions[link]

[edit] Silver Age Justice League of America

This series has been collected in the following:

*omitted issues featured reprints of material from earlier Archives.

[edit] Justice League/Justice League International/Justice League America (1987–1996)

This series has been collected in the following hardcover collections:

[edit] JLA (January 1997 – February 2006)

This series has been collected in the following trade paperbacks: