Hey, what is up? Andrew Kramer here for videocopilot.net and welcome to another great video tutorial it is good I get to judge the tutorial that I make it see. You have one web site get to were ever you want not a bad deal. Okay, what we are going to be creating is an animation base on the amplitude of a music track. Now, somebody you have seen the great Justin Timberlake video were everything looks like an audio wave form and his dancing and all goes to the music really cool effect. Well and this tutorial we are not going anything like that so just want to get that other away but we are going to create a pretty cool effect base on the audio amplitude. So, here sort of what we are going to be creating.
[Music Playing]
Okay, pretty cool. Real quick on may change my user interface color back to the D fault, I just that look better with the darker interface so. Okay let us go ahead and get start and I am creating a new composition. And all just to 720 feet 24 frames per second and will do 10 seconds long pretty good and make choose okay. Now, we are going to be sort of learning a few things here what a concept. So I mean try take sometime and here the beginning to kind and explain expressions that will be using so. Okay, let us going take our song full that way even drag that out to the time line and you can look the way form by heading LL and there this you can hit the period key and here the eye.
[Music Playing]
Pretty cool, and what we are going to do is extract the audio date. Now, to do that what we are going to do is right click on the audio, choose key frame assistant convert audio to key frames. And what that does is creates in all object that holds all of the data. So we could the effects control is a 3 effects had been applied and if we scroll down this effects. You could see there is key frames and if we kind a row through that you can see the numbers on moving and if we select the parameter and turn on the track we have here. We could sort the see what that looks like. So now we have key frames base on the audio amplitude of the song pretty cool. Except that is not what we are going to do just yet so I am going to delete that change back to our track you. What I am going to do is added affect someone to choose affect audio base on trouble.
Now I deal you want to do this and of outside program but you should work okay. What I am going to do is create 2 know objects? One has the base and one has the trouble. So what I am going to do is bring the travel down to negative 100 and the base up to maybe 50 and then I am going to create that audio key frame. Now the thing about the audio key frame is a creates key frame base all of the audio in the composition so if you have a multiple audio tracks, make sure you shut them off because it will include them in the amplitude. So now we broke this down a little bit and we are going to right click and choose key frame assistant convert audio to key frames. Then all hit return and it would not name this base. Then all go back to the track turn the trouble up to 50 and the base down to negative 100 then all right click key frame assistant convert audio to key frames. And will call this travel.
Now is a lot of key frame data for these particular tracks so I am going to delete the left and right channel. And just leave the both channels and again I am doing that for the travel as well. Because some tracks have stereo and you want to use that case some can use the makes version of that. Now here is the great thing let us scrub through this. Now you can see that this values or different because this is base on the base, this is base on the trouble.
Now I want to see what is going on with these key frames. So what we going to do some it take the travel know object can move it to the left and the base move it little to the right. And then I am on a bring up the position for the travel some what hit pee and will hit shape and you now here is the slider for the both channels audio. And what we going to do is sort of extract that data. So I am in alt click on position stop watch, alt click on the positions stop watch brings up our inept the expression and what I am going to do is pick with both sliders. Some can I pick with the value and it creates an expression. And all sort of explain this really quickly. This value is the single value. This position value has 2 values that has X and Y. in order to apply that one value to the 2 values it creates a variable which simply says temp so that can be anything just could be X equals affect both channels is light which means equals this 11 value from our both channels audio. And then I can change this to acts and this tax and would that says is change the value here from X comma X which is equal to the 11 so how group apply that both values now have that one value.
Now, that is not exactly what I want to do. Here is what I read or deep and rather type before that part value and what the value command thus is simply says what the value of the position is before we apply this expression. Then what we going to do is do value plus this array and array has X in X. Now, I only want to do it to the wide. So I am in a do values plus zero for the X and X for the Y or I should say travel. So travel equals the travel slider and now were doing value plus zero for X, travel for Y knowing were can I saying about that.
Okay, so now I am in click away and watch if I have this space bar we know video on the screen our know objects will playback in real time so check it out. Alright so were seen little action and that is what we want. Now I am go and do the same thing for the base layer some on hit pee brings up the position and then may now alt click pick with the slider value and just make little room here. And will change the variable to base and will change this to zero and this to base target type of cancel. And what we going to do is type a value plus zero for the X and this value for the Y. is now we play this back easy they can of move independently.
So, that sort of the jest of extracting the date of from the audio, so now we need the process that data into way that a little bit more usable. So what all do is alt click on the travels stop watch. Now we have key frames but just alt click that brings of our expression and the expression says to use itself as the value. Well, we could change that the values and guess what if still work that is equivalent to what was there a moment ago. So I want to make that clear value is way to say use the current value of the parameter so where going to use that.
Now I am going to show you a brand new expression that I do not think I have done over and here is what is this linear parenthesis value, zero, 100, 0, 500, and parenthesis so do not be scare by this number and I am explain it to you and you are going to understand immediately. What they say is to linearly change the value from 0 to 100 to 0 to 500 which means if this value is 0. the resulting value will be 0. But if this value is 100, the resulting value is going to be 500.
Now, this are obscure values that I just place in here. We are going to actually use more accurate numbers and to find those numbers here is going to I am in select the parameter bring up the track view here. And what is going to look in here closely, what we can see is it the high value those to about 25 and the lowest average height is probably right around here, right around 8 or 9. So 8 are the low value average and 25 looks to be the high number.
So will go out of the track you will change it to 8 and high number 2 and all just 250 for the sake of this expression. So now, we shut this expression off. You see the values is 13, what we they expression on the value is 63. Because remember it is linearly taking the value from 8 to 50 and then adjusting it to 0 to 500. So, anything that is below 8, so if we can scroll through here. Here is the value of 6 and if I turn the expression on, it is going to turn to 0 because below 8.
Now, we can change that to 10 and what that is can I do is any value 10 and below is going to show if 0. Now if you go back into the track you, turn on the graft for the expression here is what you see is the resulting animation. So we just have sort of extracted those high points. And we can also actually going and adjust the expression more if we need to layer but the idea is to be able to remap the value 2 values that you want to use. When you extracted data from the audio? The value you should get are always values that are going to be helpful for your animation glows for example require a lower value and other effects require a higher values so. We want to use this expression to create a more magnified result. So, now if we look at the resulting animation here check it out. Here is our travel if I right click on change that to blue aqua signs. So now you can see it moves a lot more than this one. And again, we can change the value to start say to 8.5 and watch that.
Now our base needs the same thing so what all do is bring up our base will type in that same expression alt click on the stop watch linear value, 0, 100, 0, 500, and parenthesis. Now we want to find what to make the star and in range so were select the parameter bring up the track view and were we have here low value average is about 9 or 10 high value is about 50 to 60. So change that to 10 and this to 60, so 10 to 60 is now going to be 0 to 500, so check it out.
Now, say we think this is a little match just kind of a lot there it well. Just change the resulting in value down lower. So now 10 to 60 just kind a remap from 0 to 200, now say want to reverse the value. Well, was just to multiply negative 1. so whatever to be resulting that you it is time to negative 1, and so now one goes up, 1 goes down. So anyway here is the best way to sort of extract the data is using this linear key frame. So now let us move on the something that is a little more exciting than 2 squares. Okay what I am going to do is creating new salad and might come six and choose okay. You do not actually that is pretty boring stops there. I actually the story for you am pretty good.
So I am driving into a shopping center, just like a grow she storing some other food stores and pulling you on off the main street and can a going up the main drive way and I turn right those can be a lot of traffic and this particular area so I am going can stop into our left is like a shopping seen like area were she go we stores something. And I am sitting and listening to music whatever and there is a car in front of me and there is a car in front of that car we are sort of just jammed up no big deal. And then out of the corner my left eye, I see a shopping a cart coming down the parking lot and I see it and I am think in like you know I going to think quick here and I am think okay it is not going to hit my car but it is going to hit this guy in front of his car and so I am thinking should I get out and maybe try to stop it or you know what if I try and I do not get there in time middle in front like a fool. A lot of things rent you my hit, and then finally I decide it I can what this happen so I am just about to get out my car when the shopping cart is lamb into this skies car like right in the dead driver side door and likely there was an auto damage you know I can feel bad for the guy. I hate to think what my happen if I was in there.
Okay, good story you know just a terrible. Okay, let us go ahead and get back to here. What I am going to do is add our fantastic particular plug ins and I am choose effect trap code particular and know this plug in does not come with after effects but if you want to create cool things sometimes you need to cope plug ins so. Here sort the default level that creates these great particles and when I am do shut up are know objects and rename our layer particles. And what we going to do is going to the middle option let us see here. And we going to bring the particle is second up to like 500 in turn of velocity down to 0, they random velocity down to 0 and the random motion from velocity down to 0 also.
So 000 and then may create a 3D camera so new camera. That is good then go 35 millimeter okay. So now we have our wonderful particle there that just taking there because we do not have any velocity and what we going to do are use our audio data to drive the position of this particle and where going to drive the Z axis which means forward and back. And what will do is bring up the key frames for the travel that you here they are and then may go and alt click on the Z position. And up brings up our expression for that particular parameter and I may take the pick with and will go down a little bit and will pick with to our travel slider that we have add it all linear expression too. It added no were quick way and now going shut that and let us see what the value does for the position of the particle so.
Can I scrub through here, now you could see the value is changing? But nothing is really happening here because particles so just taking there is so. When you going to do are take the orbit camera tool and this allows us to orbit or camera on the click and drag to the left. So you can see we have sort of these 3D particles and observe of a straight line and if I look at the animation, you can see this or it move back and forth. We want to look a little bit nice here the net so that we are going to do is turn of the velocity from the motion up maybe 50. And what that thus is when the particle gets the rune it stores the keeps traveling.
So I will come down of the particle life and what change that to about 1. So now you can see a little bit more what is happening it is when the particles are prone they keep traveling in those directions. So, next thing would do this come down to the physics for the particles this is were like air no lets stop and good the air option down to the turbulent field and this is sort of a fancy way have saying to displace the particles sort of randomly can a sense. And when I am going to do is change the affect position and move that value off. So now you can the particles start taking on this really unique form. We can also affect the size of the particles so some are and some are small. To set that a five and will go head move backup here will change the color of the particle to at the light blue and the transfer mode to add it is coming nice. Change the size of the particle down about 4 and then the opacity down also. And the reason we going to turn the opacity down cause were turn off the particle first second.
And a hold down shape and that will drag this until it fields in. so maybe wit a little bit more than that. And then go back down and let us bring the opacity down even more. And the size down even says and each day comes so. Looks pretty good and will see with there other settings look like maybe change the position up even more and so that create of pretty unique affect. And they will go down to the particles size over life so. The life with the particles 1 second and we want them start out large and shrink down so that is where the idea here.
Now, what is making the life a little bit longer 1.5 maybe? And the size alternate just a little bit so I can see it a little bit more and again monkish the particles and you hold down shape and you can skip dragging at basically want it to can film in the gaps there. So, but essentially that is the idea right there and now the other thing we can do is increase the velocity from motion and what that can I do sort of let the particles flow together and will make it look like the particles are shooting out like energy with the bit so comeback down maybe will make the effect position a little bit higher and it anytime we can also go back into the travel and going to our expression and remap the value. Maybe we want to be a bit stronger so.
Now, if we change this to 800. The power of this is can a turn up with them also need it turn off the particles but I am going to set this 700 and go back to the particles increase the particles and again increase the opacity. So that we can see it a little bit better so just track 10.
So okay, that is looking pretty good on not perfect but I think we need a lot more particles in order to feel that in so. For now we go ahead and go with that and looks going take a look at what this is creating for us so. Just can a run preview.
[Music Playing]
Okay, so get the basic idea it is sort of pushing the particles and the particles are inheriting the velocity from the music so. A little different way of can creating in animation, now we are going to do 1 more thing and we were duplicate the particle that would creating so. That is the end of the particle part of the tutorial and now we will play with a little more, but many duplicate this add it duplicate and to this particle system were going to just make a few changes, were going to change the color to green and were going to change the expression so hit you and were going to change the expression to look at instead of the travel layer, we are going to change the name of the layer to be so remember this exactly the same some can a change the name.
And so now it is going to make the animation base on the base instead of the travel. Now, we want to sort to make this look a little bit more unique so going here and will increase the effect position? And will change the active and that sort of the frequency and will change that to so, and it will change the scale to about you. And so that can I create a little bit more random affect here. So now if we sort of scrub through it, you can see that is both sort of play off each other.
Okay now from this frame, we can see the blue can it goes into the right and the green goes into the left and the reason for that is because we to the channel we add in expression times negative 1 reverse that expression so now the particles of being thrown more in not direction.
[Music Playing]
So as you can see sort it goes with the music and I created example earlier and we have our early example from they beginning you know you can choose any of this colors that you would like to use and so it just kind created a camp here and BC universal. Now this title sort actually on HT and made 1 for comedy central also and they animate check it out.
[Music Playing]
Pretty cool all input this project follow up so use it semi link you know ask you are my wife. Alright I do not know how long this tutorial is but it feels like it was a pretty long ones of, anyway I am in cut this thing out right now and thanks for watching and I will see you guys next time. Do not forget to check out the web page a blog course to check our DVDs and I will see you guys next time but wait there is a little bit more. I just want you know to show you how to create and animate wave form just encase you were looking to do that so. We just play your music unto your camp create a new solid and then shows affect generate or render how do you way form and what is allows you to do is select your audio file and it create surrendering of your way form and you can change the color and the size I am just play with the setting it makes sense and you want a longer duration just increase that value, just increase the sample and the thickness and the height of the way form.
[Music Playing]
And it will render out for you and also select somebody is other option this like digital audio here it is been more high tech era and the some dots here we go.
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