Learn how to quickly and easily add audio transitions to your project in Descript.
From the audio track
To add a fade in, fade out, or crossfade, find on the white tab that appears at the start of your audio. Click and drag the tab to the right: the farther you drag it, the longer the audio will take to fade.
From the script track
The same white tabs will be present on your script track. You can click and drag them the same way you do in the audio track. If you click and drag a white tab across an adjacent audio track, a crossfade will be created.
The script track also lets you click into the white tab. This will open a menu that lets you add fades to both your video and audio with exact durations: