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ViewCrafter is parametrised by spherical offsets about a point at the depth of the image centre and needs a hand-estimated elevation. No inspected source gives a metric unit: MotionCtrl uses a unitless 'speed', CamI2V a trace_scale_factor, SVC a camera_scale (with a documented single-view scale ambiguity), GEN3C and ViewCrafter a depth-relative scale. Cosmos-Predict2.5's loader inverts file extrinsics before use, so even wi...","status":"active","body":{"text":"Conventions differ and must be matched per system. CameraCtrl, MotionCtrl and CamI2V take world-to-camera 3x4 matrices (RealEstate10K style, OpenCV camera axes) and all re-express them relative to the first (conditioning) frame, so absolute world axes and origin drop out but the camera axis convention and handedness do not. Stable Virtual Camera takes camera-to-world matrices in the OpenGL convention and internally flips two columns to OpenCV. 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