Tip: After Effects expression to fade out audio

[Jon]

Hello! A quick tip on how to fade audio with Templater via an expression. Since Templater can dynamically swap a wide variety of media sources of varying lengths, you can’t count on keyframes to be able to accommodate the variation of durations for consistent fade-outs of audio tracks. Here’s a sample of how to do that. Apply this expression to the Audio Levels.

fadeTime = 30; //frames for fade
audio.audioLevelsMin = -48; 
audio.audioLevelsMax = audio.audioLevels[0];
layerDuration = outPoint - inPoint;
singleFrame = thisComp.frameDuration;
animateOut = linear(time, (outPoint - framesToTime(fadeTime+1)), (outPoint-singleFrame), audio.audioLevelsMax, audio.audioLevelsMin);
[animateOut,animateOut];

In this example, the expression takes the audio level you’ve set and fades to -48 db over 30 frames (assuming 30fps composition, that is 1 second).

[GwynEaves]

Hi…you can use the pick whip to link rotation values between layers to animate the hands on a clock—as the hour hand moves from hour to hour, the minute hand rotates the full circumference of the clock face. This type of animation would take a long time to create if you had to set each keyframe for both hand layers, but with the pick whip, you can do it in a matter of minutes.

assembly circuit