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Most of the time when you're working on motion graphic or even videos in fact it's more useful in videos.

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You really don't want to start previewing from the beginning.

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You want just to limit to a certain time that you are working with for this aftereffects give you these

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options fresher for this great bar here.

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It's called the work area.

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You have work area start and you have work area and and this determines the work area and you have to

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be very careful also when you render about the work area we'll go through that.

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I can start the work area for example at one second and end it at three to a second.

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Now I want to play only what's inside.

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And this is how I did the set up here to show you previews.

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It's time to show you how I did it.

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I will open the preview panel.

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Stretch it down to the maximum.

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So first of all in the preview here you have go to the first frame go to the last frame of the whole

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camp.

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But since you have done this work aerialist put it here.

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You also have go previews frame I will click on it and you see it's moving frame by frame.

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Or you can use a page up to use frame by frame and then pressing page up and to go to the next frame

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you will press a page down.

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OK.

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This is very useful mainly when you're doing rotoscoping or you're doing a lot of other things you have

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seen these things I think OK that's one then the shortcut the shortcut instead of coming to click.

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Please stop here.

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You can just play us spacebar and start playing.

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That's very nice.

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I never use this space but I just like to come here.

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Actually I don't like reaching for the keyboard.

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Now here you have the option cash before play back.

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Now this option is coming from the previous version of after effects we use to cash.

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So it will play the animation and cash it all in the memory then play it back and we can preview it.

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But now the system has changed a bit where you you know play cache and preview at the same time.

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So it's up to you if you want to go back to the old system.

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Well first of all you cash it.

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Meaning you put in memory the whole animation or only in your work area and then play it or you can

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just do like I've been doing since the beginning of the course without this option.

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I like it very much without this option because I can see the playbox and I don't have to preview them

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and it's very useful when you're using a computer that has only 40 gigabyte memory or it now play from

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and that is now very nice.

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It's about start of range or current time.

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Now I have always said that the current time current time means I start from where the time line indicator

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is if I play if I press play.

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You this it will start from here and go to the beginning.

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Let's make it longer for you to notice.

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I'll come for two seconds and if I say play with the current time you know this it will start from here

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and then it's playing only the work area.

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So you're not at the range.

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Also I did it.

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It's only the work area that is played.

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It will play from work area start to work area and only and that's very useful if you have a movie or

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even this animation.

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So you can just focus on this portion of your composition and really work on it.

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When Also when the mouse pointer is like double arrows you can click on it and move your work area with

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the same number of seconds.

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For example this is two seconds.

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Now I can click on it and just move it.

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And then when I press play now it's going to start playing from this work area of course it's empty

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let's put it here and I'll take it to the beginning and address this very fine.

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Now let's click here to start my work area from here.

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I know I have to come to this point and drag it in.

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What I can do is to press B and then this is the beginning of the work area.

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Now I want the work area to end here.

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I will place and now these are the shortcut B.

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And also you can come and now play of course.

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Move it the way you want.

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Like we said.

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OK.

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And it's startling because you have work area here.

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It's starting from the work area or you can say you know they have so many options here.

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Work Area extended by current time.

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For example if I put it here it will start playing workarea work area by extended time.

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And here you are start from here and it will stop at the end of the work area.

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So and also you have an entire duration that is the entire duration of the composition.

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So it starts from the time line indicator.

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So and also you have other options.

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Play around in time and so on.

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You know like you are playing here you say OK I want to play only two seconds around the current time.

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Not useful at all unless you get movies and you don't have memory.

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So let's put on the work area and this is how you get to work to return the work area to it's normal.

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You know the full camp is just come to the work area and DoubleClick.

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This is about the work area and the current time.

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Now the frame rate here the frame rate always leave it to auto.

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In my case it's showing 25 in between brackets meaning that this composition is 25 frames per second.

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And I put the frame rate to automatic.

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I can really change it to 24.

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Now notice the brackets had disappeared.

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So you know you said this value and is not the default value.

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So the best is it to auto.

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Otherwise you know how you land.

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Now the interesting thing is the full screen for screen is a bit annoying but from time to time you

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will want to use it.

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For example I think the full screen and I come I play need to switch to full screen.

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Of course now the resolution that I'm using is a bit odd.

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So a part of the view of the composition is KOLOFF because I'm recording now to go back to normal you

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just click and it goes back not just how you saw this white ones here.

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It's a memory issue.

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So using the work area and the preview you can actually you know make your work a bit easier and really

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preview only the slice or the portion of time that you want to view.

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So please use these options and I would see in the next election.