Ad End Card Legibility Motion Test

Act as an original video director. Generate the finished clip for this brief: Create a 15-second concept sequence testing [approved end-card copy] at [three supplied display durations]. Keep background, typography size and safe areas identical, change only exposure duration and separate trials with neutral frames. Use editable text overlays and do not claim measured readability before audience testing.

Use [aspect ratio, default 9:16], coherent motion and consistent subject identity. Use only authorized references. Keep essential action inside the central safe area and supply captions separately where needed. If video generation is unavailable, return a timed shot list labeled as a production brief. Disclose synthetic imagery when publishing realistic scenes.