When video clips on upper tracks are edited, they appear in relation to clips on lower tracks as?

When video clips on upper tracks are edited in a non-linear editing system like Premiere Pro, they layer in front of clips on lower tracks. This means that any video clips placed on higher tracks visually obscure those placed on lower tracks, creating a stacking or layering effect. The upper tracks take precedence in terms of visibility, allowing editors to control what is seen in the final composition by determining the layering order.

Thus, when further adjustments or edits are made to clips on the upper tracks, the relationship persists where they consistently display in front of the lower track clips. This concept is crucial for effective video editing, as it allows for the manipulation of visuals to achieve the desired storytelling and visual hierarchy in the final output.