TAGRPO: Boosting GRPO on Image-to-Video Generation with Direct Trajectory Alignment

Prompt: In a room with a red chair, a framed picture of a spider on the wall, and various objects including a small TV with a doll, a man stands with his arms crossed between two Minions. The Minion on the left holds a megaphone with a red light, while the Minion on the right wears an orange hat and scarf. The man uncrosses his arms and grabs the megaphone from the left Minion. He examines the megaphone briefly before starting to walk away. The Minions watch him as he moves towards the left side of the room.

Prompt: In a room with red walls and ornate decorations, a man in gray armor is seated on a throne with a red carpeted staircase in front of him. A man in an orange outfit with intricate designs on his back approaches the throne, gradually getting closer with each step. The seated man remains still, watching the approaching man intently.

Prompt: The video shows a clownfish swimming towards a sea anemone in an underwater environment with a purple and green background. The clownfish continues to move closer to the anemone, and the anemone's tentacles start to rise. The clownfish begins to swim into the anemone, and the tentacles continue to lift. The clownfish fully enters the anemone, and the tentacles surround it. The clownfish moves deeper into the anemone, and the tentacles cover most of its body. The clownfish starts to rise within the anemone, and the tentacles begin to lower. The clownfish continues to ascend, and the tentacles start to relax. The clownfish reaches the top of the anemone, and the tentacles are almost fully relaxed.

Prompt: A man in a purple uniform with a cape stands in the center, surrounded by several other uniformed individuals. Two soldiers begin to escort a girl in a red outfit towards the man. The soldiers continue to bring the girl closer to the man, who remains stationary and observing the situation. More soldiers join the scene, surrounding the girl and the man. The girl is now fully surrounded by the soldiers, who appear to be securing her.

Prompt: A small creature with white fur, red shoes, and a red scarf stands on a stone-paved area with a mountainous background. A boy with black hair, wearing a gray and red outfit, runs up to the creature and stops beside it, looking at it and talking. A girl with orange hair, wearing a yellow coat and blue pants, walks up and stands next to the boy, looking at the creature. The creature closes its eyes and appears to be speaking. The girl covers her mouth with her hand and seems to be saying something. The boy and the girl then turn their heads to look in the same direction as the creature.

Prompt: A woman, wearing a yellow and white striped sweater, holds up a colorful striped shirt with a red tongue logo on it, showing it to the camera while talking. She adjusts the shirt, displaying it from different angles. She then looks at the shirt's tag, removes it, and continues to talk while gesturing with her hand. The background includes a desk with sunflowers, makeup brushes, and framed pictures.

Prompt: A woman wearing a white sun hat and a blue dress with pink trim is standing in a green, outdoor setting with trees and grass in the background. She smiles and holds the brim of her hat with both hands, swaying her body slightly. She continues to smile and adjust her hat, moving her hands around the brim. The woman then starts to walk forward while still holding the hat and swaying her body. Finally, she adjusts the hat by lifting it slightly and positioning it on her head.

Prompt: A young girl with curly hair, wearing a green jacket and a pink backpack, is sitting in the front passenger seat of a car. She opens the car door and begins to exit, still hugging herself. The girl steps out of the car and turns to look at the man sitting in the driver's seat. The man, who has a beard, waves at her and gently touches her head. The girl then turns and walks towards a nearby gate, where other children with backpacks are also heading.

Prompt: A boy with a worried expression is walking down a residential street at sunset, holding a small object in his right hand. He continues to walk while looking at the object, his expression remaining anxious. The boy then lowers the object to his side and starts to run forward, his mouth open as if speaking. The background shows houses with green roofs, a fence, and trees, all under a warm, orange sky.

Base Model: Wan 2.2. Prompt: A girl with long black hair, wearing a white dress and having large, translucent wings, is seen speaking while floating in a dark environment with vertical blue lines in the background. She then starts to move her wings and begins to fly, turning her body to the side as she does so. While flying, she looks to her left and continues to speak.

Base Model: Wan 2.2. Prompt: A white creature with a fur collar and a black coat is seen looking at a large orange tentacle in front of it. The creature then turns its head to face the camera, revealing a wide grin with sharp teeth. Finally, the creature begins to turn its body to face the camera directly. The background consists of a rocky, mountainous terrain with a clear blue sky.

Base Model: HunyuanVideo 1.5. Prompt: Two women are lying on a beach with a scenic background of cliffs and the sea. The blonde woman, wearing a watch on her left wrist, shows her hand to the brunette woman, who is wearing a red bikini. The brunette woman adjusts her hair with her right hand while looking at the blonde woman's hand. The brunette woman then uses her right hand to touch and interact with the watch on the blonde woman's wrist.

Base Model: HunyuanVideo 1.5. Prompt: The scene begins with a view of a control panel with illuminated buttons and a chair in front of it, set against a backdrop of a large, complex machine visible through a window. As the camera moves to the right, the control panel and chair remain in view, while the machine in the background becomes more detailed, showing various mechanical components and lights. A small control unit with green and red lights comes into focus on the right side of the frame, with the machine's intricate parts and a glowing orange light becoming more prominent. The camera continues to pan right, bringing the control unit into clearer view, while the machine's background shows more detailed machinery and the glowing orange light. The final frames focus on the control unit, highlighting its various buttons and lights, with the machine's complex background still visible.