Small and useful. Two checks I'd add to the manifest, since they cause most of the editor complaints I've seen. Frame rate, including whether it's variable: screen recorders often write variable frame rate files, and you can spot them when r_frame_rate and avg_frame_rate disagree in ffprobe. Editors drift audio sync on those. And duration with a tolerance, so a narration file that's a few seconds shorter than the picture gets flagged before anyone starts cutting.