PiP Fit Mode

video-mark-fit

Controls how the picture-in-picture overlay video is scaled to fit the dimensions specified by video-mark-w and video-mark-h.

video-mark-fit accepts one of the following values:

ValueBehavior
clipScales the overlay to fit entirely within the specified dimensions without cropping. Letterboxing or pillarboxing may occur if aspect ratios differ.
cropScales the overlay to fill the specified dimensions, cropping any excess. The overlay fills the bounding box completely.
scaleStretches the overlay to exactly match the specified dimensions, ignoring aspect ratio.

Use video-mark-fit[N] for a specific overlay layer.