A frame grabber is a hardware device used to extract a single frame from a movie sequence captured by a camcorder and convert it into a digital image. This allows individual frames from video footage to be saved, edited, or printed as still images.
With modern digital camcorders, software can often perform the same function by capturing an already digitised frame directly from the video file. Frame grabbers are useful for filmmakers, video editors, and photographers who need high-quality stills from moving images for analysis, presentation, or creative projects.