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2. Chroma key - Wikipedia

   en.wikipedia.org/wiki/Chroma_key

   Sometimes a shadow can be used to create a visual effect. Areas of the blue screen or green screen with a shadow on them can be replaced with a darker version of the desired background video image, making it look like the person is casting a shadow on them. Any spill of the chroma key colour will make the result look unnatural.

3. Digital video effect - Wikipedia

   en.wikipedia.org/wiki/Digital_video_effect

   Digital video effects (DVEs) are visual effects that provide comprehensive live video image manipulation, in the same form as optical printer effects in film. DVEs differ from standard video switcher effects (often referred to as analog effects) such as wipes or dissolves, in that they deal primarily with resizing, distortion or movement of the image.

4. Full screen effect - Wikipedia

   en.wikipedia.org/wiki/Full_screen_effect

   The speed of applying a full screen effect is independent of the complexity of the image. In 3D rendering applications such as video games, common full screen effects include color filters, depth of field, and full screen bloom. A color filter, for example, may desaturate an image or convert it to grayscale.

5. Special effect - Wikipedia

   en.wikipedia.org/wiki/Special_effect

   Optical effects (also called photographic effects) are the techniques in which images or film frames are created photographically, either "in-camera" using multiple exposure, mattes or the Schüfftan process or in post-production using an optical printer. An optical effect might be used to place actors or sets against a different background.

6. PNG - Wikipedia

   en.wikipedia.org/wiki/PNG

   When converting an image from the PNG format to GIF, the image quality may suffer due to posterization if the PNG image has more than 256 colors. GIF intrinsically supports animated images. PNG supports animation only via unofficial extensions (see the section on animation, above). PNG images are less widely supported by older browsers.

7. Digital on-screen graphic - Wikipedia

   en.wikipedia.org/wiki/Digital_on-screen_graphic

   In a typical digital on-screen graphic, the station's logo appears in a corner of the screen (in this simulated example, the bottom-right) A digital on-screen graphic , digitally originated graphic ( DOG , bug , [ 1 ] network bug , or screenbug ) is a watermark-like station logo that most television broadcasters overlay over a portion of the ...