The Vertical Cut
A 16:9 morning-coffee shot turned into a 9:16 story: the kitchen grows a shelf of herbs and a window above and the counter front below, around the untouched original.
Expand places the original clip on a larger canvas and generates the new scene around it, so a horizontal master becomes a vertical story or a square post without cutting the product out of frame. The original pixels, timing and soundtrack stay; only the new borders are made.
The source is scaled down to fit when it is wider than the target. The 8-second pass took about 280 GPU-seconds.