problem with off-screen voiceover【画外音问题】
After repeated attempts, the model consistently assumes that the voice-over is spoken by the character's mouth and drives the character's lip movements accordingly. Could you please help me check what might be wrong with the prompt? 【反复尝试后，模型始终会认为画外音是角色嘴里说出来的，并驱动角色嘴部说话。请帮我看看，提示词有哪里不对。】
subject_definitions:
<Subject 1> (S1) is the person in <Picture 2> and <Picture 1> - fully preserved for appearance, hairstyle, clothing, and posture.
<Picture 1> is a fully preserved scene reference for the desk area - it provides the desk surface, blue ceramic mug, pen holder, desk lamp, and the map on the desktop, within a windowless, enclosed indoor environment. Behind the character is a sealed wall with a wooden door - no windows are present anywhere in this room.
summary:
[reference generation] A 14-second single shot inside a windowless, enclosed bedroom. <Subject 1> sits at the desk, picks up a pen from the map and marks it, while keeping his mouth completely closed throughout. The camera is positioned on the desk surface, shooting upward at a low angle. Behind the character is a sealed concrete wall with a wooden door - no windows exist in this room.
retention_analysis:
<Subject 1> (appears in [Shot 1]): fully_preserved - the character's appearance, clothing, and posture are exactly as in <Picture 2>.
<Picture 1> (desk area): fully_preserved - the desk surface, blue ceramic mug, pen holder, desk lamp, and map on the desktop are fully retained, within a windowless, enclosed indoor setting.
detailed_description:
The target video adopts a photorealistic, minimalist interior style with neutral lighting from overhead fluorescent tubes, set within a windowless, enclosed bedroom environment as defined by <Picture 1>. Behind the character's back is a sealed concrete wall with a wooden door - there are no windows anywhere in the room, and no natural light enters from outside.
[Shot 1] The shot opens with the camera positioned on the desk surface, shooting upward at a low angle toward <Subject 1>. The character dominates the frame, with the blue ceramic mug occupying the lower-right foreground (softly out of focus), its steam visibly rising. On the left side of the frame, the desk lamp is visible, turned on and casting a warm glow. In the background behind the character, a sealed concrete wall and a wooden door are visible - no windows, no exterior light. The camera performs a static shot. The man (S2) says in an off-screen voiceover: [Chinese] 和平铁路的轨道是超级金属做的——应该还可以用。从这里到喜马拉雅山，走和平铁路要六千七百公里，走公路只需要三千八百公里。 while his lips remain completely closed. <Subject 1> reaches his hand toward the map spread on the desk, picks up a pen from its surface, and begins to mark locations on the map while thinking. The pen produces a soft scratching sound against the paper as he draws lines and circles.
overall_soundscape:
Low-level room tone and the continuous hum of the fluorescent lights persist throughout the shot, within the confined, windowless space.
non_diegetic_music:
N/A
