砂轮火花慢镜头

生成一段20秒、16:9画幅的电影感视频。场景位于昏暗的工业车间，以特写镜头拍摄旋转的砂轮持续接触粗糙的钢材边缘。接触点迸发出明亮的橙色与金色火花，向四周密集散开，形成光的喷溅。用明显的慢动作捕捉火花，展现独立发光颗粒、短暂的光轨、在空气中逐渐熄灭的细小火星，以及金属表面的偶尔反光。采用高对比度照明、深炭灰背景、真实金属纹理、浅景深和清晰的微距细节。摄像机保持稳定并进行轻微横向跟拍；全程保持连续的打磨动作和自然的火花物理效果。不要出现文字、标志、水印、人物或音频。

【English Prompt】
Create a 20-second cinematic video in a 16:9 aspect ratio. Extreme close-up of an abrasive grinding wheel contacting a rough steel edge in a dark industrial workshop. The wheel rotates steadily while bright orange and golden sparks burst from the contact point, scattering outward in a dense shower of light. Capture the sparks in pronounced slow motion, showing individual glowing particles, short luminous trails, tiny embers fading in the air, and occasional reflections on the metal surface. Use high-contrast lighting, a deep charcoal background, realistic metal textures, shallow depth of field, and crisp macro detail. Keep the camera stable with a subtle lateral tracking movement; maintain continuous grinding action and natural spark physics throughout. No text, logos, watermark, people, or audio.

【推荐生成参数】audio_control.mode=native · duration=20 · ratio=16:9 · resolution=768P

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