Complementary rPPG-Derived and Lip-Region Frequency Cues for Talking-Face Deepfake Detection.

arXiv:2609.22284v1 Announce Type: cross Abstract: Talking-face (TF) deepfakes are detected unevenly by rPPG-based methods across generators. We study two lightweight visual-only cues, rPPG-derived waveforms extracted by RhythmFormer and lip-region discrete cos