Alpha masking / moving or resizing a mask
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Ill second Hugh's suggestion. The shapes actor plus the alpha mask actor is going to do what you need.
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Yes, I've tryed now and it works. Thanks :)
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And use a bit of gaussian blur to give it a smooth edge (if needed).
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Yeah Graham, of course I've used also Gaussian Blur... it looks fine!
Going on next level: I'd like to use the mask like an "eraser" that reveal the photo, until is completely visible.I am experimenting with and the mask moves motion blur is giving me the best results, but still isn't what I would to do, mainly because the current position of the "viewing hole" is burned and, of course, because because motion blur "viewing tray" is temporary... (I've also tried with Video Delay and Sprite actors put on a second projector, but it seems more bad...). Any suggestions?as usual, thanks to any ideas...S -
You might be best looking at something like the buffer actor and freeze?
I made something a while ago but it's not on the machine I am using at the moment. I used it for erasing part of a mask for video mapping. -
Freeze in a loop of sorts with a pulse generator is one good possibility. Some clever use of the Particle system actor is also a viable approach.
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that is nice @Michel , maybe with the gaussian blur between shapes and effect mixer, I was trying to get the final video with a black BKG but cannot find the way to make it work... suggestions please?
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if you want the same starting with black instead of white, see the attached patch.
Best
Michel
7416f9-erase_revealblack.izz -
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Hi everyone,
sorry I am away from computer for some days... I'll try next week :)For now, thanks in advance!S -
Hello,
this is from a patch I was working on a few weeks ago; it's fairly similar to the one posted by Michel above. We were trying to recreate the effect of a long exposure picture taken with a stills camera but the principle is similar. Swap out the 'Video In Watcher' for a combo of the 'Stage Mouse Watcher' & 'Shapes' as in Michel's patch. It will give slightly different results to the motion blur patch, try playing with the frequency of the pulse generator to get different effects.Best,Crofty
