Start in black. End in black. Control the time between.

A clear opening, closing, or both

Fade In begins on a black frame and gradually reveals the normal picture during the selected opening duration. Fade Out keeps the picture normal until the selected closing duration, then darkens it progressively until the final frame is black.

The two effects are independent. Each enabled duration must be greater than zero, and the combined fade time must be strictly shorter than the span from the first visible video segment to the last. This leaves a normal-picture interval between the effects and lets ClipFlow show a specific duration warning instead of producing an ambiguous overlap, even when an audio track runs longer.

Output and next steps

ClipFlow renders the visual fades into a new video on your device without changing its running time, leaves the original source unchanged, and retains available source audio. Fade In / Out is included without ClipFlow Pro. The generated video can continue into compatible tools for trimming, filters, overlays, sound, captions, or conversion.

Related guides

• Trim the clip before setting its opening and closing fades.
• Choose the video's color and style before adding black edges.
• Use transitions when the fade belongs between separate clips.