Cinelerra

Cinelerra
Maintainer:	Heroine Virtual
Latest release:	2.1 / July 2, 2006
OS:	Linux
Use:	Video editing software
License:	GPL
Website:	heroinewarrior.com/cinelerra.php3

Cinelerra is a free non-linear video editing system for the GNU/Linux operating system. It is produced by Heroine Virtual, and is distributed under the GNU General Public License. Cinelerra also includes a video compositing engine, allowing the user to perform common compositing operations such as keying and mattes. Image File history File links Download high resolution version (1280x1024, 43 KB) Summary Screenshot of Cinelerra version 2. ... In software engineering, software maintenance is the process of enhancing and optimizing deployed software (software release), as well as remedying defects. ... A software release refers to the creation and availability of a new version of a computer software product. ... July 2 is the 183rd day of the year (184th in leap years) in the Gregorian Calendar, with 182 days remaining. ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Linux (also known as GNU/Linux) is a Unix-like computer operating system. ... Video editing software is application software that handles the editing of video sequences on a computer. ... A software license is a legal agreement which may take the form of a proprietary or gratuitous license as well as a memorandum of contract between a producer and a user of computer software. ... The GNU logo Wikisource has original text related to this article: GNU General Public License The GNU General Public License (GNU GPL or simply GPL) is a widely used free software license, originally written by Richard Stallman for the GNU project. ... Website - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... The GNU free software logo Free software, as defined by the Free Software Foundation, is software which can be used, copied, studied, modified and redistributed without restriction. ... Note: Please see National Latin Examination for the standardized test that is also abbreviated NLE. A non-linear editing system (abbreviated NLE) is a video editing or audio editing system that can perform random access on the source material. ... Linux (also known as GNU/Linux) is a Unix-like computer operating system. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... The GNU logo Wikisource has original text related to this article: GNU General Public License The GNU General Public License (GNU GPL or simply GPL) is a widely used free software license, originally written by Richard Stallman for the GNU project. ... In visual effects post-production, compositing refers to creating complex images or moving images by combining images from different sources - such as real-world digital video, digitized film, synthetic 3-D imagery, 2-D animations, painted backdrops, digital still photographs, and text. ... In graphics and visual effects, keying is an informal term for compositing two full frame images together, by discriminating the visual information into values of color and light. ... Mattes are used in photography and filmmaking to insert part of a foreground image onto a background image, which is often a matte painting, a background filmed by the second unit, or computer generated imagery. ...

Cinelerra was first released August 1, 2002, and was based in part on an earlier product known as Broadcast 2000. Broadcast 2000 was withdrawn by Heroine Virtual in September 2001; Heroine Virtual cited legal liability concerns in the wake of litigation from the RIAA and MPAA and the costs involved in high-end video production. August 1 is the 213th day of the year in the Gregorian Calendar (214th in leap years), with 152 days remaining. ... For album titles with the same name, see 2002 (album). ... 2001: A Space Odyssey. ... The RIAA Logo. ... The Motion Picture Association of America (MPAA), originally called the Motion Pictures Producers and Distributors Association, is a non-profit trade association based in the United States which was formed to advance the interests of movie studios. ...

Cinelerra is sometimes criticized for requiring too much computing power to run. Its authors counter that it is a professional program and that there are alternative programs for amateurs.

The Community Version

Heroine Virtual generates a new release of Cinelerra every 6 months or so (see the History section below). The release generally consists of releaseing pre-compile RPM packages specific to current version of Fedora Core Linux along with the source code. Any bugs and usability issues found and or resolved by the community that are submitted to Heroine Virtual often result in no response, and it is not until the next release that there is any indication that Heroine Virtual takes these changes on board. Because of both the latency in development, and also the distribution-specific nature of the release, a group of open-source developer decided to create their own version of cinelerra, referred to as Cinelerra-CV (where CV stands for 'Community Version').

Cinelerra-CV serves the purpose of allowing would-be contributors to contribute to a open repository where each and every development of the code by the community can be viewed by everyone. Along with this, mailing lists, and an IRC channel exists where more experienced users and developers can provide support to the less experienced users, and general discussions can take place amoung the community of developers about the technicalities of certain issues. Cinelerra-CV also generate a wider range of packages for a number of different distributions, and the compilation system is considerably different. (System libraries are used extensively, and the autoconf/automake program is used to configure the compilation system.)

Although Cinelerra-CV may technically be called a fork, the relationship between Heroine Virtual and Cinelerra-CV is still rather friendly. Heroine Virtual at times contributes to some of the discussions on the mailing lists, and takes in many of the changes that occur in the repository. That Heroine Virtual is not upset by the fork can be concluded from a few paragraphs on their site, (take on 19-July-2006) that state:

What you'll find here is the heroinewarrior version of Cinelerra. This is the version that supports what we need to do at Heroine Virtual Ltd. and is the same tree that was started in 1997. As time passes and new students come and go from the Linux scene, new forks of Cinelerra emerge that are more suited to the community but not what Heroine Virtual Ltd. needs. Today you'll probably find the cinelerra.org fork more useful.

They allow certain parts of our fork into their fork while contributing anything they want while we allow certain parts of their fork into our fork while contributing anything we want.

The versioning of Cinelerra-CV follows that or Heroine Virtual in that after Heroine Virtual produces a release, Cinelerra-CV examines the changes introduced by the new version of Heroine Virtual, and merges them in with their version. The text, "CV" is appended to the end of the version id string to indicate the community version. ( i.e. after the 2.1 merger, the CV version is labelled 2.1CV )

Notable features

Cinelerra includes support for very high-fidelity audio and video: it processes audio using 64 bits of precision, and can work in both RGBA and YUVA color spaces, using floating-point and 16-bit integer representations, respectively. (The "A" in both color space notations stands for alpha channel.) It is resolution and frame rate-independent, meaning that it can support video of any speed and size. The RGB color model utilizes the additive model in which red, green, and blue light are combined in various ways to create other colors. ... Example of U-V color plane, Y value = 0. ... A comparison of RGB and CMYK color spaces. ... In computer graphics, alpha compositing is often useful to render image elements in separate passes, and then combine the resulting multiple 2D images into a single, final image in a process called compositing. ... Display standards comparison The display resolution of a digital television or computer display can be an ambiguous term especially as displayed resolution is controlled by different factors in picture-tube (CRT) and flat panel or projection displays using fixed picture-element (pixel) arrays. ... Frame rate, or frame frequency, is the measurement of how quickly an imaging device produces unique consecutive images called frames. ...

Other features may be found on its features list.

Cinelerra interface

Cinelerra's interface is similar to that of other nonlinear video-editing systems, such as Adobe Premiere Pro; however, because it includes a compositing engine, it may also be likened to compositing software such as Adobe After Effects or Shake. The user is presented with four screens: Adobe Premiere Pro, produced by Adobe is a realtime, timeline based video editing software targeted at prosumer and professional video editors. ... Adobe After Effects is a digital motion graphics and compositing software developed by Adobe Systems. ... Shake is an image compositing package used in the post-production industry. ...

1. The timeline, which gives the user a time-based view of all video and audio tracks in the project, as well as keyframe data for e.g. camera movement, effects, or opacity;
2. the viewer, which gives the user a method of scrubbing through footage;
3. the resource window, which presents the user with a view of all audio and video resources in the project, as well as available audio and video effects and transitions; and
4. the compositor, which presents the user with a view of the final project as it would look when rendered. The compositor is interactive in that it allows the user to adjust the positions of video objects; it also updates in response to user input.

Cinelerra's interface is frequently criticized because it does not conform to either GNOME or KDE Human Interface Guidelines. In animation, a key frame is a frame in an animated sequence of frames that was drawn or otherwise constructed directly by the user rather than generated automatically, e. ... Scrub has a number of meanings: Look up scrub in Wiktionary, the free dictionary. ... A gnome hiding behind a toadstool. ... KDE (K Desktop Environment) is a free desktop environment and development platform built with Trolltechs Qt toolkit. ... Human Interface Guidelines (HIG) is a software development document which offers application developers a set of recommendations. ...

Cinelerra usage and awards

Cinelerra has gained ground among some GNU/Linux enthusiasts looking for a native GNU/Linux video editing system. Professional use is mostly promoted by Linux Media Arts, who sell Cinelerra as part of an integrated hardware and software package for video production.

At the National Association of Broadcasters' 2004 Electronic Media Show, Cinelerra was awarded Bob Turner's "MAKING THE CUT" award. The award is given to "the best and most exciting postproduction products seen at the convention" [1]. The National Association of Broadcasters (NAB) is the industry group representing the commercial radio stations and television stations of the United States. ...

History

2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... For album titles with the same name, see 2002 (album). ...

External links

• Cinelerra home page
• Cinelerra-CV - The community version of cinelerra
• An online manual (twiki)
• Cinelerra: Rough and ready video editor