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Kay Erland
Приєднався 22 тра 2014
Blue Screen Compositing on Film
Learn how blue screen composites worked before the digital era.
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Відео
Dancing Pig with emulated 90 degree shutter
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Dancing Pig with emulated 90 degree shutter
134 VI 162c camera shutter demo 180 and 360
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134 VI 162c camera shutter demo 180 and 360
133 VI 161a camera shutter demo 36 and 108
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133 VI 161a camera shutter demo 36 and 108
129 VI 64 240fps displayed at 12fps slomo
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129 VI 64 240fps displayed at 12fps slomo
128 VI 33d quad tai slomo framerate demo
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128 VI 33d quad tai slomo framerate demo
126 VI 32b quad stick frame rate demo slowmo
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126 VI 32b quad stick frame rate demo slowmo
140 1 VI 251 Rolling integration quad screen slomo loop
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140 1 VI 251 Rolling integration quad screen slomo loop
137 VI 222 rolling integration animation
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137 VI 222 rolling integration animation
132 VI 221 block integration animation
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132 VI 221 block integration animation
131 1 VI 218b 16fps 360 camera shutter 360 projector shutter
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131 1 VI 218b 16fps 360 camera shutter 360 projector shutter
131 VI 223 block integration animation 360 camera shutter
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131 VI 223 block integration animation 360 camera shutter
130 VI 65 240fps displayed at 24fps slomo
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130 VI 65 240fps displayed at 24fps slomo
140 2 VI 252 Rolling integration quad screen slomo loop even slower
Переглядів 12910 років тому
140 2 VI 252 Rolling integration quad screen slomo loop even slower
One thing that I think is worth noting here that is the explanation doesn't quite finish this process all off. An optical printer is used to take the first matte (the travelling matte), seen at 3:41 and the counter-matte, seen at 3:47, which is ran through the printer along with the original colour negative, seen at 1:11. The original colour negative with the travelling matte, is put through the printer, which will only give the actors which is isolated (notice the actors are clear in white at 3:41 which enables this), then, the counter-matte is used with another, separate negative that has your desired, chosen background from elsewhere (and notice that at 3:47, the background is clear in white in this instance) to effectively draw an outline of the actors onto a new negative cutting out the parts of the background where the actors will be. Basically, you have two new negatives after this process, one with just the actors, and one with the background with the outline of the actors. The outline has been created onto the background film from elsewhere so you can slot the actors you've filmed onto it as explained below. You then run these two through the optical printer to combine to what will be the final, composited image, combining the two negatives into one, where they will slot/composite like a jig-jaw puzzle. What Jon Erland is talking about at 3:57 and beyond that is that you can sometimes get "matte-lines" or "fringes" which are errors in the image that can sometimes occur when compositing different elements together. These days, computers are used to give a much more refined look, but back then, this was the best they could do. That's the only thing this video is missing, but apart from that, it's a great video. You can find out more about this process illustrated here in the book called: "Movie magic : the story of special effects in the cinema" by John Bronsnan, page 110.
The least informative video ever.
Awesome! This made a lot of sense for me!
I seriously thought they made a film cut out on every frame!!
That's called an "Articulated Matte", where an artist will literally draw round the edge of the object they want removed and then paint the inside black, creating a 'Background matte'. Then they can make a negative of that image to create the 'Cover Matte'. (And yes, they will do it for every single frame!) The process shown in this video is called a "Travelling matte", which essentially generates an 'Articulated Matte' automatically through the use of blue screen and film processing. It's amazing what they used to do before computers.
@@rileykaiseeker4294 Frame by frame manually wow, that's something intricate I get tired just thinking about it.
Sometimes we still do that, although it is much more streamlined and precise when you do it digitally in, say, After Effects or Nuke. It's also called rotoscoping. It is still a tedious frame by frame process, but the tools allow for much cleaner masking with soft edges for hair and fur. Old school chemical/film blue screen got better in the seventies (Star Wars, 1941) but some of the earlier attempts don't hold up so well by today's standards.
Jon Erland devised the bluescreen illuminated pylons for Star Wars.. They were as radical as the Dykstraflex
Jon Erland is a true genius. Could we get videos on the Blue Max front projection bluescreen system and the reverse-bluescreen system he created for FIREFOX (1982)?
I was always so confused how they did this on film. This is helpful.
You lost me... This is crazy, respect to everyone shooting and making movies like Star Wars etc... Awesome! Thanks for sharing!
Yes im lost too. No wonder they are geniuses and just so innovative. Seems like the newer technology got more simpler