Pika H3 Flex in ComfyUI: Reference Images to Video

subject_definitions:
<Subject 1> is the physical humanoid robot in <Picture 1> and <Picture 2>. Both pictures repeat the same robot identity reference. Preserve its off-white ceramic face plates with fine wear and fasteners, brushed steel crown and chest, blue-grey optical eyes, dark articulated lips and jaw, exposed neck pistons, cables and shoulder joints. This is a manufactured robot with solid mechanical materials.
<Audio 1> is the natural recorded male English narration reference. Use its calm conversational timbre, clear articulation and natural unhurried rhythm for the robot's speaking voice.

summary:
[reference generation] A photorealistic physical robot faces the camera in its softly lit workshop and speaks one short sentence with small coordinated mechanical mouth movements.

retention_analysis:
<Picture 1>: fully_preserved robot identity, materials, face geometry and workshop lighting; framed as a chest-up portrait.
<Picture 2>: fully_preserved duplicate of the same robot; not a second robot or a second location.
<Audio 1>: attribute_transfer natural male speaking timbre and cadence; use as a voice reference for the exact dialogue below.

detailed_description:
[Shot 1] Photographic live-action product cinematography of <Subject 1> standing in the same bright workshop as its references. A frontal chest-up portrait keeps the whole head, exposed neck mechanism and upper shoulder joints visible against softly blurred shelves and windows. Soft window light creates real highlights on brushed steel and subtle shadows along the ceramic panel seams. The camera stays fixed and level for one continuous six-second shot. The robot looks into the lens and speaks in a calm, natural male English voice (S1), using <Audio 1> as the voice reference: <d>[en] They lived with their mother in a sandbank, underneath the root of a very big fir-tree.</d> Its dark mechanical lips and hinged jaw articulate gently with the spoken syllables; the visible neck actuators make only tiny plausible adjustments. Keep the face plate rigid, individual fasteners and panel boundaries stable, and shoulders nearly still. After the sentence, its mouth settles softly closed while it maintains a friendly attentive gaze. Preserve the physical ceramic and metal robot throughout, with no human skin, no human elderly man, no cartoon or toy styling, no extra characters, no scene cuts, no captions and no added text.

overall_soundscape:
One clean natural male speaking voice, close and intelligible, with the timbre and cadence of <Audio 1>. Very quiet workshop room tone underneath. No electronic voice effect, no music and no competing machinery.

non_diegetic_music:
N/A