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This year guys you could say is a continuation of the previous lecture.

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We are still in time for speed and we are using this PDA now.

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I want to show you how to use the negative values and what's the concept behind this select display

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and press control the comment the on the Mac and duplicated and less press you to see the key frames

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and actually delete all the key things.

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So let's hide the bottom layer and then we want to work on this that with the negative speed.

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If you go from 50 you can take it down to let's say minus nine.

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If you play nothing is playing.

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Why is that.

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Well after effect is going to take the position on this frame and go backward minus 109.

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But you are at 3 zero at the beginning of the video.

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So it's not possible for him to go back from 0 5.

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So the solution to that is for example let's write a 500 and the keyframe it.

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OK.

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So we are at a very high speed here.

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I will also use here the whole keyframes.

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OK.

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So it's better.

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We can see what's happening.

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Let's scan for example after two seconds.

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OK.

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So actually we have played two seconds at 500 frames.

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So we are almost at 1000 frames.

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I will change the speed now to minus 500.

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And as as you expect is going to go see forward and backward.

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When will it stop when it will reach the frame.

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Or frame 1 if you like.

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So there is no more frames to go backwards so it will stop over here just here.

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Now we are at the beginning of the video which is this speed for example to 250.

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So it's going quite speedy come after eight seconds.

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OK.

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So 250 now times of four seconds you have spent already.

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Thousand frame then you change a value for example to minus 500.

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And here you are you have a nice back and forth video that you can play with.

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Of course this is a bit naive but it's up to you to tweak it to make it nicer and to create some nice

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animation over here.

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Maybe also using normal keyframes.

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You can also remember is it is I will toggle back and you can select your keyframes.

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If 9 to easy is and come back over here to the glove chart.

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Let's say we are in the speed chart and play with your keyframes the way you will want.

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You will get a certain animation.

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So there is a lot of testing but not much to show you know.

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I'm just going to show you how to work with them.

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It's something you already know.

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Let's go back and select all of them and toggle them back to hold keyframes.

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Now let's try the famous motion blur here.

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The motion blur here will use the method.

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If this whole frames frameworks or picks and motion I'm going to put it at framework's.

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So it's going to have this ghosting.

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Plus the motion blur for now leave it to automatic.

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And let's play and see exactly what's happening.

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It's a very cool effect here a bit exaggerated of course just for the course.

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Now we know this here you have five shadows.

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Let me go back just one.

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I would go pick up your notes you have five shadows.

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This is coming from the shot of sample.

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How many shallows you want to see or how many times you want the shutter.

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You put it at two and you get two of them which is pretty interesting by the way.

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OK.

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And of course you can keyframe the shattered sample create more or less and play around with it.

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Let's try.

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This come to this keyframe and the keyframe the shot that simple let's go backward we go J and we put

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five.

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OK let's see the difference come back to the beginning play.

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So now you are at 5 and you go backward with five.

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Now you are at 2.

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It's about you what you want to create and how you want to create it.

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I showed you here and there is a lot of Creation to play around with.

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OK guys.

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So I hope this was first of all fun for you.

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And second Get your own video.

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It's like you're walking backwards or forward and then you move faster and slow or even you make it

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negative speed here something like this you know create something uploaded to youtube post your link

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in the Q and A section of the course.

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I will be very happy to see your work and give you some good comments if you like.

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Thank you for listening.

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I will see you in the next election.