The community member is creating a website and wants to use a custom SVG to mask a video. Other community members suggest setting the container with the video to position: relative, and adding a box inside it with position: absolute and top/left/bottom/right: 0 to create an overlay. They also mention an example in a CodePen link and an old video about this approach. The answer provided repeats the steps to create the overlay.
this is the regular approach: set position relative to any container that holds the video, add a box into that container with position absolute and top/left/bottom/right 0
