Towards Subject Consistency over Dynamic Subject Sets
in Video Generation

### Camera and video style requirements Every generated 5-second video must be: - a single continuous shot; - captured from one camera trajectory; - realistic real-world footage style. Allowed: - smooth tracking camera; - handheld camera; - dashcam; - fixed camera; - gradual viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - natural movement speed; - realistic physical interactions. Strictly avoid: - slow motion; - cinematic slow-motion effects; - time lapse; - fast-forward; - exaggerated motion; - unrealistic physics. --- ### Occlusion requirement Include realistic but limited interactions. Allowed: - brief partial occlusion; - subjects passing close to each other; - temporary overlap. Avoid: - heavy occlusion; - subjects disappearing for long periods; - dense crowds where tracking becomes impossible. At least 5 anchor subjects should remain trackable during the whole video. ### Scene specification A multi-lane city highway tunnel entrance scene captured from a moving vehicle. The scene contains 11 visible vehicles including a red sports car, white bus, black SUV, blue truck, silver sedan, delivery van, and motorcycles. Anchor vehicles include the red sports car in the left lane, white bus in the center lane, black SUV ahead, blue truck on the right, and silver sedan behind. Early stage: show the tunnel entrance and establish the distinct colors, shapes, and positions of the vehicles. Middle stage: vehicles accelerate into the tunnel, the sports car overtakes, the SUV changes lanes, the truck slows slightly, and motorcycles pass near cars while briefly overlapping. Final stage: preserve all anchor vehicle appearances and identities under changing lighting conditions. Realistic tunnel driving, single continuous shot, no accidents, no unrealistic vehicle changes.

### Camera and video style requirements Every generated 5-second video must be: - a single continuous shot; - captured from one camera trajectory; - realistic real-world footage style. Allowed: - smooth tracking camera; - handheld camera; - dashcam; - fixed camera; - gradual viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - natural movement speed; - realistic physical interactions. Strictly avoid: - slow motion; - cinematic slow-motion effects; - time lapse; - fast-forward; - exaggerated motion; - unrealistic physics. --- ### Occlusion requirement Include realistic but limited interactions. Allowed: - brief partial occlusion; - subjects passing close to each other; - temporary overlap. Avoid: - heavy occlusion; - subjects disappearing for long periods; - dense crowds where tracking becomes impossible. At least 5 anchor subjects should remain trackable during the whole video. ### Scene specification A single-camera street-level video shows a busy but not crowded sidewalk near a university campus during daytime. Ten pedestrians are visible: a man wearing a blue jacket with a red backpack, a woman with a yellow coat and white hat, a student with a green hoodie and black backpack, a person with a gray sweater and headphones, and six other pedestrians with different clothing styles. In the first second, all pedestrians establish their identities while walking along the sidewalk in different directions. In the middle of the video, several pedestrians pass each other, briefly overlap, and change walking directions near a tree-lined path. The camera continues tracking the group without cuts. In the final seconds, the five anchor pedestrians remain visible with the same clothing colors, backpacks, hairstyles, hats, and accessories while continuing to walk naturally.

### Camera and video style requirements Every generated 5-second video must be: - a single continuous shot; - captured from one camera trajectory; - realistic real-world footage style. Allowed: - smooth tracking camera; - handheld camera; - dashcam; - fixed camera; - gradual viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - natural movement speed; - realistic physical interactions. Strictly avoid: - slow motion; - cinematic slow-motion effects; - time lapse; - fast-forward; - exaggerated motion; - unrealistic physics. --- ### Occlusion requirement Include realistic but limited interactions. Allowed: - brief partial occlusion; - subjects passing close to each other; - temporary overlap. Avoid: - heavy occlusion; - subjects disappearing for long periods; - dense crowds where tracking becomes impossible. At least 5 anchor subjects should remain trackable during the whole video. ### Scene specification A wide-angle broadcast camera records a professional football match in a large stadium with two teams, one wearing red jerseys and the other wearing blue jerseys. At the beginning, 12 players are visible, including five anchor players: a tall red midfielder wearing number 8, a short red winger wearing number 11, a blue defender wearing number 4, a blue midfielder wearing number 6, and a goalkeeper wearing number 1. Around 1 second, both teams begin a midfield transition as players run into attacking and defensive positions. Around 2 seconds, the red midfielder passes the ball forward while multiple players cross paths near the center circle and briefly overlap. Around 3 seconds, defenders mark attackers closely while the camera tracks the moving group from the sideline. Around 4 seconds, players spread out again while maintaining their original jersey colors, numbers, and appearances. The video ends with all anchor players still recognizable and continuously visible. No replay, no slow motion, no camera cuts.

### Camera and video style requirements Every generated 5-second video must be: - a single continuous shot; - captured from one camera trajectory; - realistic real-world footage style. Allowed: - smooth tracking camera; - handheld camera; - dashcam; - fixed camera; - gradual viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - natural movement speed; - realistic physical interactions. Strictly avoid: - slow motion; - cinematic slow-motion effects; - time lapse; - fast-forward; - exaggerated motion; - unrealistic physics. --- ### Occlusion requirement Include realistic but limited interactions. Allowed: - brief partial occlusion; - subjects passing close to each other; - temporary overlap. Avoid: - heavy occlusion; - subjects disappearing for long periods; - dense crowds where tracking becomes impossible. At least 5 anchor subjects should remain trackable during the whole video. ### Scene specification An elevated stadium camera records a professional football match between a yellow team and a dark blue team. The scene contains 14 visible players. Five anchor players are a yellow goalkeeper wearing number 1, yellow defender wearing number 4, yellow midfielder wearing number 8, dark blue striker wearing number 10, and dark blue defender wearing number 6. Around 1 second, players gather near the penalty area preparing for a corner kick. Around 2 seconds, players begin running and marking opponents as the ball enters play. Around 3 seconds, attackers and defenders move tightly together, causing temporary overlaps and occlusions. Around 4 seconds, players separate and continue tracking the ball. Near the end, the camera follows the movement while preserving the identity of all anchor players. No replay, no camera cuts.

### Camera and video style requirements Every generated video must be a realistic single continuous shot. Required: - The entire video must be captured from one continuous camera trajectory. - The camera should maintain temporal continuity throughout the 15-second duration. - The scene should feel like a real-world observation video. Allowed: - smooth camera tracking; - handheld camera movement; - dashcam view; - fixed surveillance camera; - gradual panning; - natural viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps; - sudden viewpoint changes. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - Subjects should move at natural real-world speed. - Motion should reflect realistic physics and interactions. Strictly avoid: - slow motion; - slow-motion effects; - cinematic slow-motion shots; - time-lapse; - fast-forward effects; - exaggerated motion; - unrealistic acceleration. The generated video should resemble a real continuous recording rather than a cinematic highlight or edited movie sequence. ### Scene specification A wide-angle broadcast camera records a professional football match in a large stadium with two teams, one wearing red jerseys and the other wearing blue jerseys. At the beginning, 12 players are visible, including five anchor players: a tall red midfielder wearing number 8, a short red winger wearing number 11, a blue defender wearing number 4, a blue midfielder wearing number 6, and a goalkeeper wearing number 1. Around 3 seconds, both teams begin a midfield transition as players run into attacking and defensive positions. Around 6 seconds, the red midfielder passes the ball forward while multiple players cross paths near the center circle and briefly overlap. Around 9 seconds, defenders mark attackers closely while the camera tracks the moving group from the sideline. Around 12 seconds, players spread out again while maintaining their original jersey colors, numbers, and appearances. The video ends with all anchor players still recognizable and continuously visible. No replay, no slow motion, no camera cuts.

### Camera and video style requirements Every generated video must be a realistic single continuous shot. Required: - The entire video must be captured from one continuous camera trajectory. - The camera should maintain temporal continuity throughout the 15-second duration. - The scene should feel like a real-world observation video. Allowed: - smooth camera tracking; - handheld camera movement; - dashcam view; - fixed surveillance camera; - gradual panning; - natural viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps; - sudden viewpoint changes. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - Subjects should move at natural real-world speed. - Motion should reflect realistic physics and interactions. Strictly avoid: - slow motion; - slow-motion effects; - cinematic slow-motion shots; - time-lapse; - fast-forward effects; - exaggerated motion; - unrealistic acceleration. The generated video should resemble a real continuous recording rather than a cinematic highlight or edited movie sequence. ### Scene specification An elevated stadium camera records a youth football tournament match between a green team and a white team. Twelve young players are visible, including anchor players: a green captain wearing number 10, a green midfielder wearing number 8, a green defender wearing number 2, a white forward wearing number 9, and a white midfielder wearing number 6. Around 3 seconds, players establish their positions and begin moving around the field. Around 6 seconds, the green team performs several short passes while players rotate positions and opponents follow closely. Around 9 seconds, multiple players converge near the ball, briefly overlapping while maintaining individual appearances. Around 12 seconds, players separate into attacking and defensive formations. The final frames preserve jersey numbers, hairstyles, and player identities. Single continuous shot without slow motion.

### Camera and video style requirements Every generated video must be a realistic single continuous shot. Required: - The entire video must be captured from one continuous camera trajectory. - The camera should maintain temporal continuity throughout the 15-second duration. - The scene should feel like a real-world observation video. Allowed: - smooth camera tracking; - handheld camera movement; - dashcam view; - fixed surveillance camera; - gradual panning; - natural viewpoint changes. Strictly avoid: - cuts; - scene transitions; - camera switching; - replay; - montage; - time jumps; - sudden viewpoint changes. --- ### Motion requirements The video should contain normal-speed realistic motion. Required: - Subjects should move at natural real-world speed. - Motion should reflect realistic physics and interactions. Strictly avoid: - slow motion; - slow-motion effects; - cinematic slow-motion shots; - time-lapse; - fast-forward effects; - exaggerated motion; - unrealistic acceleration. The generated video should resemble a real continuous recording rather than a cinematic highlight or edited movie sequence. ### Scene specification A realistic dashcam video shows a busy downtown avenue during daytime with a continuous single camera shot from a moving vehicle. The scene contains 12 visible road vehicles, including a red compact sedan, a white SUV, a blue delivery van, a silver city bus, a black pickup truck, a yellow taxi, a gray hatchback, a green motorcycle, a white cargo truck, a dark blue sedan, a silver minivan, and a brown crossover SUV. The red compact sedan, white SUV, blue delivery van, silver city bus, and black pickup truck are anchor vehicles that remain visible throughout the entire 15-second video. Around 3–5 seconds, the yellow taxi accelerates from the right lane and moves ahead of the gray hatchback, while the white SUV gradually slows down due to a traffic light. Around 6–10 seconds, the blue delivery van changes lanes and briefly passes close to the red sedan, causing temporary partial occlusion between the two vehicles while both vehicles remain recognizable. Around 10–13 seconds, the black pickup truck overtakes the silver minivan while the city bus continues straight and the relative positions of the anchor vehicles keep changing naturally. Near the end of the video, all anchor vehicles remain visible with consistent appearance, colors, and identities.

Generate one realistic 60-second video in a single continuous, uninterrupted shot at normal speed. Keep 10-15 subjects visible at detector-friendly scale in a wide or medium-wide view. At least five distinctive anchor subjects must remain continuously visible and preserve identity, color, shape, scale, and markings for the full minute. Use one smooth camera trajectory and physically plausible motion. No cuts, transitions, camera switches, replay, montage, time jumps, slow motion, abrupt viewpoint changes, severe occlusion, tiny distant subjects, teleportation, duplication, disappearance, identity swaps, transformations, text overlays, or watermarks. A realistic 60-second single continuous shot. A handheld tracking camera follows a group of twelve dogs running along a wide forest trail in a natural park. The group includes a large white German shepherd with a black saddle marking, a brown Labrador with a red collar, a small cream-colored Corgi with short legs, a gray Australian shepherd with blue eyes, a black-and-white Border Collie, and several other dogs of different breeds. The camera stays at a medium distance to capture the entire group moving through the trail. During 0-10 seconds, the dogs become clearly separated, revealing their unique fur colors, body sizes, and breed characteristics. The German shepherd remains near the front, while the Corgi moves near the center of the group. During 10-25 seconds, several dogs change positions while running, with some crossing paths and briefly walking beside each other. The Border Collie runs around the Labrador before returning to the main group. The camera smoothly follows the dogs while maintaining visibility of the five anchor animals. During 25-40 seconds, the dogs slow down slightly and begin walking together while exploring the forest path. Their fur patterns, body shapes, and individual markings remain unchanged throughout the movement. During 40-52 seconds, the five anchor animals reorganize once more: two cross paths, one is briefly partially overlapped, and all five separate again with the same coats, markings, sizes, and body shapes. During 52-60 seconds, the group continues natural motion and all five anchor animals remain visible, recognizable, and unchanged through the final frame.

Generate one realistic 60-second video in a single continuous, uninterrupted shot at normal speed. Keep 10-15 subjects visible at detector-friendly scale in a wide or medium-wide view. At least five distinctive anchor subjects must remain continuously visible and preserve identity, color, shape, scale, and markings for the full minute. Use one smooth camera trajectory and physically plausible motion. No cuts, transitions, camera switches, replay, montage, time jumps, slow motion, abrupt viewpoint changes, severe occlusion, tiny distant subjects, teleportation, duplication, disappearance, identity swaps, transformations, text overlays, or watermarks. A realistic 60-second single continuous shot from a moving dashcam records a busy multi-lane urban roundabout. Keep 15 road vehicles visible at detector-friendly scale, including five anchors: a red sedan, a white SUV, a blue city bus, a silver box truck, and a black van. The five anchors remain continuously visible and retain the same colors, body types, proportions, and details. During 0-10 seconds, establish every anchor in normal traffic. During 10-25 seconds, vehicles enter and choose different exits; vehicles cross in depth with only brief partial overlap. During 25-40 seconds, the anchors circulate, cross in depth, and change relative order, while the camera viewpoint changes smoothly and realistic spacing is maintained. During 40-52 seconds, the anchors complete another gradual merge or ordering change, briefly overlap, and reappear as the same vehicles. During 52-60 seconds, traffic continues naturally and all five anchors remain recognizable through the final frame. No collisions, cuts, teleportation, duplication, disappearance, vehicle transformation, or abrupt camera motion.

Generate one realistic 60-second video in a single continuous, uninterrupted shot at normal speed. Keep 10-15 subjects visible at detector-friendly scale in a wide or medium-wide view. At least five distinctive anchor subjects must remain continuously visible and preserve identity, color, shape, scale, and markings for the full minute. Use one smooth camera trajectory and physically plausible motion. No cuts, transitions, camera switches, replay, montage, time jumps, slow motion, abrupt viewpoint changes, severe occlusion, tiny distant subjects, teleportation, duplication, disappearance, identity swaps, transformations, text overlays, or watermarks. A 60-second handheld walking camera video inside a botanical garden pathway. Around 10 visible pedestrians are present. Five anchor pedestrians include a woman wearing a purple jacket with a camera hanging around her neck, a man wearing a green backpack and beige jacket, a person wearing a black hat and sunglasses, a woman with braided hair wearing a white sweater, and an older man using a walking cane. During 0-10 seconds, visitors walk slowly along the garden path and observe plants. During 10-25 seconds, visitors pass each other near a narrow path, one pedestrian briefly becomes partially hidden behind another person, and the camera changes direction slightly while continuing forward. Natural outdoor lighting, no cuts, realistic pedestrian movement. During 25-40 seconds, the pedestrians vary walking speed and relative position while the camera changes viewpoint gradually and keeps the five anchors in view. During 40-52 seconds, the five anchor pedestrians take part in a second natural crossing and grouping interaction, briefly overlap, then separate with the same clothing, accessories, faces, and body proportions. During 52-60 seconds, normal walking continues and all five anchor pedestrians remain visible, recognizable, and unchanged through the final frame.

Generate one realistic 60-second video in a single continuous, uninterrupted shot at normal speed. Keep 10-15 subjects visible at detector-friendly scale in a wide or medium-wide view. At least five distinctive anchor subjects must remain continuously visible and preserve identity, color, shape, scale, and markings for the full minute. Use one smooth camera trajectory and physically plausible motion. No cuts, transitions, camera switches, replay, montage, time jumps, slow motion, abrupt viewpoint changes, severe occlusion, tiny distant subjects, teleportation, duplication, disappearance, identity swaps, transformations, text overlays, or watermarks. A realistic 60-second single continuous shot. This is association soccer played with a round soccer ball; players wear standard soccer shirts, shorts, socks, and cleats on a regulation soccer pitch. A wide-angle broadcast camera records a professional soccer match in a large stadium with two teams, one wearing red jerseys and the other wearing blue jerseys. At the beginning, 12 players are visible, including five anchor players: a tall red midfielder wearing number 8, a short red winger wearing number 11, a blue defender wearing number 4, a blue midfielder wearing number 6, and a goalkeeper wearing number 1. During 0-10 seconds, both teams begin a midfield transition as players run into attacking and defensive positions. During 10-25 seconds, the red midfielder passes the ball forward while multiple players cross paths near the center circle and briefly overlap. During 25-40 seconds, defenders mark attackers closely while the camera tracks the moving group from the sideline. During 25-40 seconds, players spread out again while maintaining their original jersey colors, numbers, and appearances. No replay, no slow motion, no camera cuts. During 40-52 seconds, the five anchor players join a second passing and defending sequence, cross and briefly overlap with teammates and opponents, then separate with the same jerseys, numbers, positions, and appearances. During 52-60 seconds, play continues at normal speed and all five anchor players remain visible, recognizable, and unchanged through the final frame.