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Video Toaster 3.1 effects screen capture

2.2K views
Apr 25, 2025
10:52

Oh yeah this side channel just gets hotter and hotter, doesn't it? Crowd's gonna go wild for this one. Yeah so this is basically useless and incomprehensible since I was unable to capture footage of the *output* of this process, but if you know what a Video Toaster does already it may make sense. The Toaster is a video switcher and effects processor - but the card itself is actually quite dumb. It contains very little other than a couple analog muxes and a "fader", which switch or blend the video inputs, and then a framebuffer with a programmable RAMDAC. When you trigger an effect, the card doesn't really do anything - instead, an animation is played on the Amiga's monitor output, and the pixel values are decoded by simple logic which directly programs the switching circuitry. It's really quite clever. What you see here is a mix of effects. Some are "wipes", where the colors simply select one of three signals - input 1, input 2, or a solid color. Others are "organic" wipes, where a set of palette entries control the blending of inputs 1 and 2. And then there are transforms, where each pixel is an encoded set of memory addresses which tell the RAMDAC which pixel to retrieve from the framebuffer for that screen location. I don't know what to do with any of that, but maybe it'll be useful info to someone someday. I should note that this was captured from a Video Toaster 4000 on an Amiga 3000. This also could have been done with an A2000, but *not* an A4000, because the AGA hardware is used differently on that model - something I need to capture separately.

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Video Toaster 3.1 effects screen capture | NatokHD