video-editing 是做什么的？
Use when converting horizontal tutorial, talking-head, screen-recording, Ableton, plugin, or music-production videos into polished vertical shorts with smart layout decisions, face/screen crop switching, PiP handling, burned-in subtitle repair, OCR/Whisper/transcript guidance, and dense QC passes such as 0.5s, 0.2s, 0.1s, or per-frame filmstrip review. Trigger for requests like "use Nolan", "not just zoom", "make this horizontal video into a short", "don't change the length", "fix bad zooms", "c