About
A frame is an image (picture) that is found in a serie of image creating a video (motion).
Frame can also be generated between two frames called keyframe to create a smooth animation with less frame.
Each application has a rate that tells how many frame it can render per second called fps (or frame per second). Typically, this rate should be equal or greater to the refresh rate of the display otherwise the content can judder on screen (often referred to as jank).