Watermark

The mark parameter allows you to overlay an image onto your video. You can control the watermark’s position, size, and transparency using additional parameters like mark-align, mark-alpha, mark-w and more.

Watermarks can also be animated with entrance and exit transitions. Use mark-start and mark-end to define a visibility window, and mark-transition to animate the watermark in and out. A bare mark=logo.png without any of these parameters renders exactly as before — always on, no animation. Transitions are fully opt-in.