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User's Guide: RasterOps "VideoTime" video capture card for Apple Macintosh Nubus computers.
The VideoTime card can capture analog video (either composite or S-Video) and create a live video window on the Mac's display. The card uses a special cable to connect between the Mac's display output and the actual display. The card takes the graphics output from the Mac and merges it with captured video to create a screen that contains both the Mac output and the live video stream.
(3.14 MiB / 3.29 MB)
This full size Nubus graphics card fits Macintosh computers such as the Mac II, IIx, IIfx, IIcx, IIci, Quadra 700, and some others with a full size Nubus slot. (It won't fit the IIsi and similar Macs that can't accommodate a long card.)
Emulating this? It could probably run under: Basilisk II