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Chroma key is achieved by comparing the phase of the video to the phase corresponding to the pre-selected colour. In-phase portions of the video are replaced by the alternate background video. [citation needed] In digital colour TV, colour is represented by three numbers (red, green, blue intensity levels). Chroma key is achieved by a simple ...
Visual effects (sometimes abbreviated as VFX) is the process by which imagery is created or manipulated outside the context of a live-action shot in filmmaking and video production. The integration of live-action footage and other live-action footage or CGI elements to create realistic imagery is called VFX.
Exchanging the background of a video clip with a Compositing tool A composite image of a basketball shot, with six basketballs added to the initial image to depict the arc of the shot. Compositing is the process or technique of combining visual elements from separate sources into single images, often to create the illusion that all those ...
The video clips are arranged on a timeline, music tracks, titles, digital on-screen graphics are added, special effects can be created, and the finished program is "rendered" into a finished video. The video may then be distributed in a variety of ways including DVD , web streaming , QuickTime Movies, iPod, CD-ROM , or video tape.
A front projection effect is an in-camera visual effects process in film production for combining foreground performance with pre-filmed background footage. In contrast to rear projection, which projects footage onto a screen from behind the performers, front projection projects the pre-filmed material over the performers and onto a highly reflective background surface.
As digital video editing advanced, visual effects became possible, and is part of the standard toolkit, usually found in prosumer and professional grade software. A common ability is to do compositing techniques such as chroma keying or luma keying , among others, which allow different objects to look as if they are in the same scene.
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The effect can also be seen in the N73 smartphone by Nokia, applied to the slideshows the phone creates from the pictures stored in it. [19] Specific seventh-generation video game consoles also feature versions of this effect, including Nintendo's Wii Photo Channel, Sony's PlayStation 3 and within the Last.fm app for Xbox 360.