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Welcome guys to the first Aleck's shared of the section where we play time games with videos it's going

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to be very interesting and actually it's very easy.

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But I need your attention for certain details I would say that are very important and certain concepts.

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Also if you want to follow along with me please open the file time games videos dash start dot AP.

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I'm using the final one here so I can compile everything that you have done for you to open when you

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complete the section.

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OK guys the first thing I want to explore is the footage F B S meaning the footage frames per second.

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Let's go and choose the setting.

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This is a video that is 10 seconds long and one frame and 25 frames per second.

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Let's create a composition with this video I would take the camp and put it inside the footage appears.

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Maybe we'll create more camps.

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You can have them all together.

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The timeline here is in seconds.

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Right guys.

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OK.

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But then if you come to the left here you can press control or command on the Mac and click and switch

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to frames not frames per second two frames.

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Now you see your timeline in frames now now if you control click again a comment click on the Mac you

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will go back to time.

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I would like you to select the footage over here and double click to open it in the footage panel.

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If you notice our footage now if we zoom out completely here is of course 10 seconds.

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You can see the time here come over to this time and press control of command of the Mac and you'll

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switch to frames.

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You'll notice that our footage is 250 frames.

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So let's remember two things.

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Footage is DJUANDA 50 frames and 10 seconds long.

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Let's go back to the composition here and change the time two frames an hour right click and go to composition

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setting and make it a whole.

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One minute I need the time to show you.

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So now the cup is only one minute.

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Let's zoom out and you can see come to this button here.

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It says into play footage if I click on it it will open into it for this for selling that and before

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so we are working on the footage not on the come nothing else but the footage itself our interest is

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in frame rate.

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You can use the normal frame rate that came with the video.

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There will be five frames per second or you can force the video to go to a certain frame rate.

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So they say conform to frame rate.

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Let's say we want to put it at 50 frames per second.

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Now the time of the video has stretched down to five seconds.

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So click OK.

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That's what's happening here in the timeline the video.

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Now if I go to the outpoint It's now five seconds and if I double click to edit it in the footage panel

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it is five seconds.

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Let's switch to frames.

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It's still 250 frames in the footage.

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It did not change the number of frames within the video itself but it's five seconds.

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You took 250 frames for 10 seconds and you brought them inside.

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Five seconds.

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So you know I hope the disillusion is pretty good.

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Now let's go back to our composition here.

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And you can see it is at one hundred twenty five frames the outpoint.

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Where did the rest go.

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I mean I MiSeq 125 frames.

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Well the first reason is if you right click position setting it is at 25 frames per second half the

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frame rate of the video.

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And that's why to conform with time after effects had to drop 50 percent of your frames.

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Let's go to the beginning and zoom in to the maximum to see the flames.

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I will is page down and page up to move one frame at a time.

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If you're not as your video has been dropping frames you need to drop 125 frames and you see the movement

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is a bit jumpy now.

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It is required that it conforms to the frame rates of the composition hence the dropping of the frames

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if you come and preview your video.

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You will not see any change after effects we'll do a good job but I chose this video because you can

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see it's jumping.

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It's not so cool.

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It's not so smooth because that dropped so many frames.

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Let's go back to the footage here.

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And let's go back to time and let's go back to the footage and instead of 50 frames per second let's

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make it 12 frames per second or even 10 frames per second.

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Ten frames is nice.

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Now your footage has become 25 seconds long in the composition.

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In fact Cliq you will notice it's 25 seconds.

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Let's go to the footage here and we need to zoom in now.

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It is really 25 seconds.

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Let's go to the frames here.

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And you notice it still 250 frames so the footage did not really change.

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You still have 250 frames in the footage.

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But now is distributed all along.

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Twenty five seconds.

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So it really has to create some new frames so this can work.

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Otherwise it would be very jumpy.

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Let's play it over here.

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Here it will be I'm not quite jumpy.

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That's what's happening here.

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Let's render fact let's open the info here is cool.

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So let's jump in.

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Let's go to the composition now.

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Select the lead itself and press or we are at the point in the outpointed you notice we have six hundred

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twenty seven frames build Fidesz is trying to 50 and in the camp you need six hundred twenty seven frames

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so you can conform to the composition settings of 25 frames per second.

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OK.

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Where did this film come from.

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Really he added I don't know 200 300 frames.

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Let's go inside and check exactly what's happening.

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First frame second frame.

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Nothing is moving.

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Third frame nothing.

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Nothing is moving.

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Not just now.

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Oh well now it moved one frame could then we move on.

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And then the frame.

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So exactly what aftereffects did in this condition.

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This is the conditioning.

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I explain about it.

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It has just duplicated the frames to be able to cope with the 25 seconds and the footage being 250 frames.

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So it added so many frames identical.

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If you notice to each other.

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So it can cope with this.

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Twenty five seconds.

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And if you come back here and play here you are you know it's small.

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It's not bad but it's ok since it has added the lower frames.

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It used here what we call the frame blending and the frame blending is just over here you can see the

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switch for frame blending.

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Now when there is nothing inside here it's using a whole frame.

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It means duplicate frames until it gets the result of you know filling the hole time for the video.

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But now there is another option if you click just once.

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Ok this will be now the mixing of frames.

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It means after effects it's going to take two frames and tried to figure out what's in between and to

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create a frame to see that.

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Let's zoom in.

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OK that will be OK.

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Let's go page down.

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Notice nothing is happening.

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Suddenly there is a kind of a frame here.

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OK like a shadow.

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We call it ghosting.

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And then if we move on.

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You notice how the ghosting is happening.

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So it has taken two frames before and the next and has mixed them and created the middle frame that

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is somehow ghosted.

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This is called free mixing or in short frame blending.

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Here you are.

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You notice how it's happening.

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Now if you watched the video.

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Normally we go to 100 percent you know the results look we can see that the eye can see this.

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OK guys if it's going to YouTube and Facebook and Duyk videos on the Web site.

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It's OK but if you're doing a professional job for TV or movies then this will be trouble.

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But here it's OK and we can see the ghosting and the music.

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There is another switch here.

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If you click again and you have what we call the pixel motion and that is very strong in after effects.

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Let's zoom in over here and that's what's happening.

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If I move one frame at a time and zoom out just a bit.

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OK.

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If it goes down we are moving one frame at a time and not as the ghosting has disappeared.

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But there is a new frame or a composite frame in every frame you are.

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So the pixel motion will take the previous frame and the one that's coming and create a new frame from

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mixing the pieces together.

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Hence you don't have the shadow lots of people come and tell me why don't I change the composition settings

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here.

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I make it 50 and I don't need the blending.

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Well you could do that and then you have a composition of 50 frames per second.

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But if you want to post it on a site that is demanding 30 frames per second or 25 frames per second

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just like you do me they like 15 frames per second for screencast.

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Then you have a big problem.

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You can put this at 50 frames per second you needed 15 frames and start playing games or changing the

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blending.

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So you get very nice videos.

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Thanks very much.

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I hope this was very interesting for you.

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And please feel free to ask me all the questions you want to ask and become a pro and that is very interesting.

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Thank you.

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I'll see you in the next election.