Make a portrait video landscape without cropping
A conventional crop can remove the top and bottom of a portrait shot. Fitting the entire source keeps them visible, but leaves unused width. AI expansion aims to continue the setting into that width instead of leaving side bars.
Adapt a vertical clip for a widescreen player
A portrait clip made for a mobile feed may later be needed in a YouTube landscape video, a presentation or a website. The original subject remains relatively narrow within the wider setting; expanding the background does not make the person fill the new width.
Converting orientation is different from rotating
Rotating a correctly recorded portrait clip turns the subject sideways. A portrait-to-landscape composition keeps the subject upright and changes the surrounding canvas. If the file already contains black side bars, inspect those first.
Understand black bars before expanding