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so this video here has been suggested

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that it's some kind of flying craft high

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above clouds now I think the more likely

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explanation is it's just a V of flying

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birds that's actually below the clouds a

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problem with that explanation is why

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does it seem like it's going behind

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these dark areas here now these dark

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areas are actually open sky which

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appears as black because they're cold

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the flying objects which I think are

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birds are heat sources so they appear as

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white dots and the clouds are also

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warmer than the the cold sky so they

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also appear as white so it kind of looks

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like it's going behind these which

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doesn't make any sense some people

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suggested that it's projecting heat onto

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the clouds but I think it's actually

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below the clouds and I'll explain why I

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think that so what I'm going to trying

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to do is try to kind of simulate what's

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going on here so I've taken this one

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frame of the video just so I get these

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clouds here and here's the vs with flown

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by in it over some clouds I'm going to

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take this image here which is a V of

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some birds and I'm going to simulate it

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as infrared like this I'm going to add

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it to the image and I'm going to scale

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it so it's a similar size to the V we

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see in the image like this similar kind

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of size and shape now this is a very

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sharp image and we can see this is a

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very blurry image so what I'm going to

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do is apply a blur to it which I'll do

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here with a Gaussian blur and just

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adjust it until we get some kind of

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similar type of blurriness to the image

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there and you can see there's a lot of

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separation here between the dots which

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we don't see here which could be

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explained by the simply being more birds

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in this is image than in this image but

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let's go with this now because we're

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just having sources of heat and it's

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blurred the best way of simulating how

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this will appear in the image is to use

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the

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a linear dodge add filter which just

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adds brightness of the dots to the image

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and we can see the effects of this when

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we move it around if we move it over

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these darker areas here we see when the

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dots are blended in because they're

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adding their heat to the heat of the

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background and because it's blurred

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they're essentially transparent what we

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get is when you go over the dark areas

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they look a lot darker now if we just

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reduce the opacity of this little bit we

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can see that we would see it looking

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like these dots are moving behind the

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dark areas when they move over them when

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they move over the clouds it looks like

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they're moving in front of the clouds

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you can see them very faintly here but

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you can also see these dots quite

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faintly when they move over the dark

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areas if we move back to that position

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and I turn on this adjustment level to

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brightness brighten the contrast you can

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see they're actually there they're

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actually moving through that dark area

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they're just a lot darker themselves so

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I think it's the same thing as it's

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going on here where this is moving over

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the dark area because it's adding its

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heat to the heat of the sky you're

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getting much darker dots and they're

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transparent again because they are