Build a reusable 2D character lock, separate identity from shot instructions, and diagnose face, costume, prop, and line-weight drift in vertical AI video.
See the exact 1080×1920 margins used by 916Studio, calculate caption boundaries, and distinguish organic preview guides from official TikTok ad templates.
Build a structured AI video brief with character locks, timed actions, camera fields, continuity rules, and validation checks without assuming a universal model API.
Export a transparent 9:16 guide, align it in CapCut or Premiere Pro, scale it correctly, and prevent the review overlay from appearing in your final video.
Start with the Prompt Builder to define the character and timed story. Move to the Safe Zone Checker when you have a frame or rough cut, then use the Script Timer before recording the final English voiceover. Story decisions shape the composition, and both shape the amount of speech that can fit without crowding the viewer.
These guides are written as production references rather than trend promises. Platform interfaces and AI generation models can change, so important commercial work should still be verified in the current target app and generator. 916Studio gives you a repeatable baseline and makes the assumptions visible.