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2. Video overlay - Wikipedia

   en.wikipedia.org/wiki/Video_overlay

   Overlay advertising is a technique used by online video producers to monetize video content through using an overlay layer to deliver and display an ad unit. This can be in the form of a video advertisement, hypervideo a product placement or a contextual link, clickable graphic or text that provides information related to the content of the ...

3. Hardware overlay - Wikipedia

   en.wikipedia.org/wiki/Hardware_overlay

   In computing, hardware overlay, a type of video overlay, provides a method of rendering an image to a display screen with a dedicated memory buffer inside computer video hardware. The technique aims to improve the display of a fast-moving video image — such as a computer game , a DVD , or the signal from a TV card .

4. Blend modes - Wikipedia

   en.wikipedia.org/wiki/Blend_modes

   Dodging lightens an image, while burning darkens it. Dodging the image is the same as burning its negative (and vice versa). Dodge modes: The Screen blend mode inverts both layers, multiplies them, and then inverts that result. The Color Dodge blend mode divides the bottom layer by the inverted top layer. This lightens the bottom layer ...

5. Template:Overlaid images - Wikipedia

   en.wikipedia.org/wiki/Template:Overlaid_images

   The "frame" is the (cropped) area visible in the final rendered image. Set its height and width. "back" is the background image. Just use the filename without [[File: etc. Its height is set to determine its scale. By default its top-left corner is aligned with the top-left corner of the frame.

6. Overlay - Wikipedia

   en.wikipedia.org/wiki/Overlay

   Video overlay, techniques to display video on computer display; Hardware overlay, one type of video overlay that uses memory dedicated to the application; Another term for exec, replacing one process by another; Overlay (programming), a technique to reduce the amount of memory used by a program; Overlay keyboard, a specialized keyboard with no ...

7. Chroma key - Wikipedia

   en.wikipedia.org/wiki/Chroma_key

   Broadcast-quality colour television cameras use separate red, green, and blue image sensors, and early analog TV chroma keyers required RGB component video to work reliably. From a technological perspective it was equally possible to use the blue or green channel, but because blue clothing was an ongoing challenge, the green screen came into ...