Full reference to all audio in @Video1 (black-screen MP4): use it exactly as is,

Full reference to all audio in @Video1 (black-screen MP4): use it exactly as is, every word, voice, pause and timing unchanged, no music, no added sounds; after it ends, only quiet room tone. The picture of @Video1 is only a black placeholder, never show it. Ultra-realistic documentary footage, a cramped robotics lab late at night, cold fluorescent light mixed with a warm desk lamp, whiteboard...