1. Open AE, create a new project and a new synthesis, and set the name of the synthesis as "sound fades in and out" and the duration of the synthesis as 5 minutes;

2. Drag the sound material to the timeline window;

3. Set the time pointer to second, click the small triangle in front of the audio, and key in "audio frequency", and set the value to-15dB; Set the time pointer to the position of 1 second, and set the value of "audio frequency" to db, thus completing the setting of fade-in effect;

4. move the time pointer to the last frame, key the "audio level", set the value to -15db, move the pointer forward for one second, key the "audio level" and set the value to db, thus completing the setting of fade-out effect;

5. If you want to look better, you can create a new solid color layer by CTRL+Y, and then drag the special effect of audio spectrum onto the solid color layer;

AE

AfterEffects, a professional special effects composition software for high-end video special effects systems, belongs to Adobe Company of the United States. It draws lessons from the success of many excellent software, and raises the video special effects synthesis to a new height:

The introduction of p>Photoshop middle layer enables AE to control multi-layer synthetic images and produce seamless synthetic effects; The introduction of key frames and paths enables us to control advanced two-dimensional animation with ease; Efficient video processing system ensures high-quality video output; The dazzling stunt system enables AE to realize all the creativity of users;