LVF files are used by the Logitech webcam software in order to overlay effects on top of the images that are displayed by the camera. Logitech software recognizes certain facial features and expressions and then uses the LVF files that are selected by the user to add effects to the video stream. These effects can include mustaches, hats, clown noses, and more.
LVF files should not be confused with LVA files which can also be used by the Logitech software.
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