System Design · Tubi · Hard
Design a machine learning system that picks which thumbnail image to show for each title in a video streaming catalog. A title may be a movie or a show, and it has several candidate thumbnails. Some candidates are automatically sampled frames from the video, while others are artwork variants created by editors. For a given user and title, the system must choose the single thumbnail that maximizes engagement, defined as the user clicking the title and then actually starting…
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