What is the common goal of Youtube spot light and rewind?
YouTube Spotlight YouTube Spotlight is YouTube's official channel, hosted on its own website. As explained by its name, the channel is used to spotlight videos and events on YouTube. Events that have been brought to light by the channel include YouTube Comedy Week and the YouTube Music Awards. Additionally, the channel uploads videos including episodes of "YouTube Nation", and annual installments of "YouTube Rewind".
Luma (video) In video, luma represents the brightness in an image (the "black-and-white" or achromatic portion of the image). Luma is typically paired with chrominance. Luma represents the achromatic image, while the chroma components represent the color information. Converting R′G′B′ sources (such as the output of a three-CCD camera) into luma and chroma allows for chroma subsampling: because human vision has finer spatial sensitivity to luminance ("black and white") differences than chromatic differences, video systems can store and transmit chromatic information at lower resolution, optimizing perceived detail at a particular bandwidth.