Add VG mini first-frame inputs: FrictionStop_CrankPush__bg261__DkX794_trajectory

.gitattributes

@@ -29037,3 +29037,5 @@ Leaderboard/Video[[:space:]]Generation/DoublePhysics/FixedConvexRedirect_RotBoar
 Leaderboard/Video[[:space:]]Generation/DoublePhysics/FixedConvexRedirect_RotBoardInertia__bg234__MEr0CC_trajectory/CineCamera_Moving/rgb/0000.jpg filter=lfs diff=lfs merge=lfs -text
 Leaderboard/Video[[:space:]]Generation/DoublePhysics/FixedPlanarRedirect_LaserBlock__bg299__61HuIA_trajectory/CineCamera_7/rgb/0000.jpg filter=lfs diff=lfs merge=lfs -text
 Leaderboard/Video[[:space:]]Generation/DoublePhysics/FixedPlanarRedirect_LaserBlock__bg299__61HuIA_trajectory/CineCamera_Moving/rgb/0000.jpg filter=lfs diff=lfs merge=lfs -text
+Leaderboard/Video[[:space:]]Generation/DoublePhysics/FrictionStop_CrankPush__bg261__DkX794_trajectory/CineCamera_4/rgb/0000.jpg filter=lfs diff=lfs merge=lfs -text
+Leaderboard/Video[[:space:]]Generation/DoublePhysics/FrictionStop_CrankPush__bg261__DkX794_trajectory/CineCamera_Moving/rgb/0000.jpg filter=lfs diff=lfs merge=lfs -text

Leaderboard/Video Generation/DoublePhysics/FrictionStop_CrankPush__bg261__DkX794_trajectory/caption.txt

@@ -0,0 +1 @@
+A crankshaft fitted with brown wheels and red arms drives two gray-blue plastic spheres along a trajectory. In contrast to the original high-gloss metal, the spheres exhibit weak reflection during motion. Differences in surface friction yield varying rolling distances for each sphere until energy dissipation results in cessation of motion. During crankshaft rotation, the spheres traverse illuminated zones while their frontal surfaces remain in deep shadow. The mechanical drive continuously inputs kinetic energy, counteracting resistance until movement terminates. Throughout the process, each sphere maintains continuous surface contact, tracing a stable trajectory defined by initial impulse and surface resistance characteristics.