A soft edge is typically associated with which of the following?

A soft edge is typically associated with video layering. In video production, layering involves placing one image or video on top of another, where the edges can be blended or feathered to create a smoother transition between the layers. This technique often involves using soft edges, allowing the two visuals to merge harmoniously, reducing the harsh lines that can occur with hard edges.

The other options do not specifically involve the concept of a soft edge. Wipe transitions refer to a specific effect that moves one scene off the screen while bringing another in, typically with a hard line. Audio mixing pertains to the combination and adjustment of audio tracks, focusing on sound rather than visual elements. Soft focus is a photographic technique that intentionally blurs the image to create a dreamy quality, but it does not directly relate to the layering of video content.