![]() Eg if we had set our scale values to scale X: 10 and scale Y: 7, then value would be value. The value is a predefined array that contains the original values of the scale properties. ![]() Y = thisComp.layer("Audio Amplitude").effect("Right Channel")("Slider") //Get the right channel Like this: x = thisComp.layer("Audio Amplitude").effect("Left Channel")("Slider") //Get the left channel If the source sound is different in the left and right channel, we could even connect them to both, affecting only the scale X with the left channel and scale Y with the right. (If you don’t see the pick whip, make sure the Layer Switches pan-button is selected in the bottom left). This will create an expression that connects the values from the keyframe slider to the scale. Take the pick wip in scale and drag it Slider in Left Chanel. Open up scale on the graphic by pressing S, and ALT-click on the stopwatch to enter the world of expressions.Ģ. Press Y and drag the circle that looks like a aim to move the anchor point. Make sure the graphics anchor point is in center (or the point where you want the graphic to be scaled from). We could place this object in another comp, but to keep it simple we’ll putt it in the same comp as the sound. Start with creating the object you want to trigger. Next we will connect it to scale our example graphics. Your could now connect a lot of properties to those sliders to control scaling, position, opacity, rotation or any other numerical values. This effect contains the sliders – Left Channel, Right Channel and Both Channels (if the sound is in stereo). This will create a null object with an effect on it. Open up each sound comp, right click on the audio layer’s source name and choose Keyframe Assistant > Convert Audio to Keyframesģ. First you need to import all you sound/music assets and put them in separate compositions.Ģ. If you want you can download the sample files in this tutorial here. Convert audio to keyframesįor the best result, you need to have your music or sounds in separate files, like guitar in one track, bass drum in another track and so on. I would later handle of the file to another person that wasn’t familiar with After Effect’s expressions, so I needed a simple UI to control parameters. During the making of the music video Let It Carry You by José González, I needed a way to animate a lot of objects and sync them to music.
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