speed up footage after effects This is a topic that many people are looking for. khurak.net is a channel providing useful information about learning, life, digital marketing and online courses …. it will help you have an overview and solid multi-faceted knowledge . Today, khurak.net would like to introduce to you After Effects Tutorial: Changing Time (Reverse, Slow Motion, Speed Up) -HD- . Following along are instructions in the video below:
“To this tutorial brought to you by river city graphix today. I ll be showing showing you how to bend time to your will within after effects. So to get open up after effects and here. I have a new composition 1280 by 720 p.
And i have some footage and i m just going to take and drag that down to my timeline and this is some more footage from my trip to los angeles. You can see we re just kind of passing by we re in a cab. And we re going past some buildings. So i just shot some footage of that so what we re going to be doing today in affecting time is we re going to be showing you how to take and reverse time so basically reversing the clip.
So the clip would look like this except moving forward and also how to take and slow down and speed up time. So we re going to be starting first with reversing the time so the way we do this is by right clicking on your clip here down in your timeline right click go to time and then go down to time reverse layer and so basically. It s really simple that s pretty much the effect. You can see now that as i move forward the clip is moving in reverse.
So it s a pretty simple effect. But if you don t know how to get to it then it could be more troublesome. So basically that s that so we can do undo that and now i m going to show you how to speed up and slow down time so if we take and right click go to time. And then there s two ways to do this you can go to time stretch or you can go to enable time remapping now time stretch.
I would not prefer this way basically the way this works is you can either select a stretch factor or a new time or a new length of the clip. Now the stretch factor is basically a hundred percent. So at a hundred percent. The clip is moving at normal speed so if you want to move at half speed.
You would put in 50 percent. And if you wanted to it to move at double the speed you d put in 200 and then accordingly off of that so if we want it to be half speed 50 hit. Okay. And you can see now that it s half.
The speed or half. The um that look like a distance that it was half the length. So um. We can undo that and i m going to be showing you now the time remapping and i would definitely prefer this way mainly it works in a similar way there s two keyframes.
There s one at the beginning and one at the end so. When you put timer mapping on it will automatically add those keyframes. So basically what you can do is take the end keyframe and move it in say halfway. And that did the exact same thing as time stretch.
Now the reason i would prefer this overtime stretch is because if you want to make an adjustment. You have to go back in a time stretch and adjust the clip again and hit okay and here you just take and drag. It and you re good to go to see exactly what you re doing so you can see that by moving this keyframe closer to the beginning. One we can really speed up the clip.
There you can see that those cars are going lightning. Fast now. So this also works in the reverse way you can take and drag this i m just going to take and drag it kind of off off the stage. There and basically you can see that once you have them farther apart.
You can really start to slow down your time now. When you do slow motion effects. It s best to shoot your footage in 60 frames. A second at least and a lot of cameras.
These days a lot of the higher end cameras. Especially will have an option to set your camera to 60 frames. A second and if you re going to be shooting slow motion footage then you should probably do that i wouldn t recommend it for normal footage just because it ll take up more room. But for slow motion stuff it gives you more frames to work with now i shot this in 30 frames a second so when we actually slow it down.
It s not quite as clear as it would be if we did in 60 frames a second this isn t particularly too bad. But some things when you do it in 30 frames a second slow it down or even 24 frames a second it starts to get really choppy now. There is a way you can fix this in after effects for this particular clip. It doesn t work very well.
But you can take and click on this little button here. Which enables a frame blending for the entire composition. So you can click on that. And then basically you can hit f4 in order to bring up more options for your actual layers.
And you ll also want to enable frame blending for the particular clip and then click. It twice that you have that straight line and now you can see that it kind of blends the frames together as we move along in slow motion. But it starts to get kind of jagged. If you go along here you can see that our cars kind of get a little whacked out.
But if we actually turn that off it turns out better for this particular clip. And you might also want to turn on like motion blur. But you basically just need to make your own judgment on that sometimes it helps sometimes it doesn t but basically what the frame blending does is when you go from 30 frames to 60 frames. Say that we doubled the length of the clip.
It doesn t have 60 frames. So it has to kind of invent the frame so by using the flame. There by using the frame blending. I usually will actually smooth out a little bit better.
But since that we have this motion blur on the cars. It doesn t work as well for this one. But i just wanted to mention it because in a lot of cases. It will make it much better so the last thing that i wanted to mention.
I m just gonna hit f4 again to shorten that back up is that we can actually take and i m just going to get back to where we actually of this keyframe and you may have actually seen this effect on youtube or in movies. Basically a lot of times will be you ll be watching something and they ll have the footage moving really quick. And then it will slow down. And it almost have like uh basically to isolate something like say that we wanted this tree to be isolated it ll like slow down.
While it s there and then after it s off the screen. Then it will start speeding back up and then say we wanted to see this car here it would slow down again. And so you can basically use it to isolate certain things like especially in fight scenes. If there s a person getting punched and it s a really big hit you want to slow down for that but the rest of the fights.
Faster. Then you can use this so basically what we want to do let s say we want these you see this little grove of palm trees. Here say that we want to kind of isolate that we can take and basically get to the beginning. There click on the little keyframe symbol over here on the left.
And then once we get off of the palm trees. We ll get to where there s like the last one there we ll hit another keyframe and so basically the slow motion is going to happen in between these two keyframes. So what we want to do is take and spread them out in order to get more slow motion. So the more spread out you have them the more slow motion you re going to get so now if we take endplate you can see that it s a lot quicker on this beginning part so we re getting like the fast speed and then it gets the palm trees and it just slows down.
So it s really bringing attention to that specific area and then once it gets to our next keyframe. It s going to go back into fast motion. Now normally you wouldn t have it that long. But i wanted to kind of give you an idea of exactly what was happening so i kind of lengthened that more than you would actually have it.
But that gives you a pretty good effect that you can use in you videos. So i hope you guys learned something in today s tutorial in how to bend time in after effects. So don t forget to subscribe rate. And comment and check back next week for a new video tutorial thanks for watching.
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“In this tutorial, you will learn how to change time in After Effects. Specifically, you will learn how to reverse video footage, slow it down and speed it up. You will also learn how to combine slow and fast motion for a cool effect.nnBe sure to SUBSCRIBE because there will be a new tutorial every week.nnFollow me on Twitter @RiverCityGraphx nnLike us on on facebook: http://on.fb.me/i8UQpt nnSuggest tutorials at http://www.rivercitygraphix.com nnFor project files, help forums, and more check out the website at http://www.rivercitygraphix.com nnFor business related inquires contact us at firstname.lastname@example.org”,
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