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{
"name" : "t2va-dialogue-864x480-141f-base12-sdpa-seed440420" ,
"measured_at" : "2026-08-20" ,
"measurement" : "Warm resident direct-runtime request including conditioning, sampling, video/audio decode, encoding, and mux" ,
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"prompt" : "integrated_multimodal_description: [Shot 1] Live-action, cinematic, a static medium two-shot frames exactly two adults seated across from each other at a small table in a quiet, otherwise empty meeting room. A composed adult man sits on the left and a composed adult woman sits on the right. Both maintain neutral, attentive expressions. The man with a low, clear baritone voice and measured speaking pace (S1) looks toward the woman and says in a calm, matter-of-fact delivery: <d>[English] The north entrance closes at six.</d> During S1's line, only his lips and jaw move; the woman's lips remain completely closed. Immediately after his final word, his lips meet and his jaw ceases speaking motion. After a brief silent pause, the woman with a clear alto voice and measured speaking pace (S2) looks toward the man and replies in a calm, matter-of-fact delivery: <d>[English] Then we should leave by five thirty.</d> During S2's line, only her lips and jaw move; the man's lips remain completely closed. Immediately after her final word, her lips meet and her jaw ceases speaking motion. Both remain silent with neutral, closed-mouth expressions through the final frame. There is no overlapping speech. The camera remains completely static with no cuts.\n\noverall_soundscape: Quiet, dry indoor room tone with a faint ventilation hum. Only S1 and S2 are audible, one at a time. No laughter, chuckling, giggling, smiling vocalization, sighing, gasping, audible breathing, filler sounds, audience reaction, narration, or other voices.\n\nnon_diegetic_music: N/A" ,
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"comparison_note" : "Video PSNR and decoded-PCM audio SNR measure output drift from SDPA, not subjective quality. Audio SNR is computed directly from aligned float PCM arrays; earlier FFmpeg apsnr results above 170 dB were invalid and have been replaced." ,
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"decoded_pcm_snr_db" : {
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} ,
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"conclusion" : "No amplitude clipping. Direct and Comfy closely match during the first 250ms and both exhibit the startup artifact, but they are not numerically identical. The shared defect originates before runtime-specific audio encoding and mux."
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} ,
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}
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