A plan that never set its range (fresh node, older workflow, plan made outside the panel) used the whole video, so a long video run through a workflow nobody adjusted generated every shot of it. Unset now means the first 15 s, read the same way by the panel and the server; the whole video is the explicit 'whole video' choice (end frame 0), as before. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>