Cited by 225Digital Media Forensic DetectionMisinformation and Its ImpactsSpeech and Audio Processing

Not made for each other- Audio-Visual Dissonance-based Deepfake Detection and Localization

Open access
Chugh, Komal, Gupta, Parul, Dhall, Abhinav, Subramanian, Ramanathan·2020·Proceedings of the 28th ACM International Conference on Multimedia

Abstract

We propose detection of deepfake videos based on the dissimilarity between the audio and visual modalities, termed as the Modality Dissonance Score (MDS). We hypothesize that manipulation of either modality will lead to dis-harmony between the two modalities, e.g., loss of lip-sync, unnatural facial and lip movements, etc. MDS is computed as the mean aggregate of dissimilarity scores between audio and visual segments in a video. Discriminative features are learnt for the audio and visual channels in a chunk-wise manner, employing the cross-entropy loss for individual modalities, and a contrastive loss that models inter-modality similarity. Extensive experiments on the DFDC and DeepFake-TIMIT Datasets show that our approach outperforms the state-of-the-art by up to 7%. We also demonstrate temporal forgery localization, and show how our technique identifies the manipulated video segments.

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Crossref · 10.1145/3394171.3413700

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  • The multimodal MDS method is not designed for temporal forgery localization tasks.

    “The multimodal MDS method is not designed for temporal forgery localization tasks”

    From Do You Really Mean That? Content Driven Audio-Visual Deepfake Dataset and Multimodal Method for Temporal Forgery Localization (2022) · cites this paper as [28]

    The Introduction identifies temporal forgery localization as a key contribution and says chunk-wise learning enables localization of transient video forgeries. Section 4.6 demonstrates the MDS method assigning segment-wise scores to locate forged portions of videos, contrary to the claim. (LLM, conf=0.92)

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  • Using only spatio-temporal audio and visual information is insufficient for the task of multimodal forgery detection.

    “Chung et al. [18] proposed an audio-visual dissonance-based model for deepfake video detection. However, the approach showed an accuracy of 69% on the FakeAVCeleb dataset [75], demonstrating that using only spatio-temporal audio and visual information is insufficient for the task of multimodal forgery detection.”

    From Attention-based Multimodal learning framework for Generalized Audio-Visual Deepfake Detection (2023) · cites this paper as [18]

    The Introduction identifies the cited work as an audio-visual dissonance-based deepfake detector. But Table 2 reports its performance on DFDC and DFTIMIT, not 69% accuracy on FakeAVCeleb. The Conclusion reports state-of-the-art DFDC performance; it does not conclude that spatio-temporal audio and visual information is insufficient for multimodal forgery detection. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Chung et al. [18] proposed an audio-visual dissonance-based model for deepfake video detection, and the approach showed an accuracy of 69% on the FakeAVCeleb dataset.

    “Chung et al. [18] proposed an audio-visual dissonance-based model for deepfake video detection. However, the approach showed an accuracy of 69% on the FakeAVCeleb dataset [75], demonstrating that using only spatio-temporal audio and visual information is insufficient for the task of multimodal forgery detection.”

    From Attention-based Multimodal learning framework for Generalized Audio-Visual Deepfake Detection (2023) · cites this paper as [18]

    The Introduction describes an audio-visual dissonance model for deepfake detection. Section 4.1 says the experiments used DeepFake-TIMIT and DFDC, and the results report AUC rather than 69% accuracy on FakeAVCeleb. The cited paper is by Chugh et al., not Chung et al.; it does not establish the sentence’s conclusion about multimodal detection on FakeAVCeleb. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • All previous deepfake datasets provide face manipulations that occur in most of the frames of the video.

    “All previous datasets provide face manipulations that occur in most of the frames of the video [28].”

    From Do You Really Mean That? Content Driven Audio-Visual Deepfake Dataset and Multimodal Method for Temporal Forgery Localization (2022) · cites this paper as [28]

    Section 4.6, “Temporal Forgery Localization” (page not available), says that most datasets, including those used in the paper, have manipulation across practically the entire video. It does not say this is true of all previous datasets or that every such manipulation is facial; Section 4.1 notes that the DFDC dataset can contain audio manipulation. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • On top of the contrastive loss, unimodal cross-entropy losses provide additional benefits to improve fake detection performance.

    “and (b) on top of the contrastive loss, the unimodal cross-entropy losses provide additional benefits to improve fake detection performance.”

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Cites

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Research works printed but not linked: 2

  1. [7]7. Ian Goodfellow, Jean Pouget-Abadie, Mehdi Mirza, Bing Xu, David Warde-Farley, Sherjil Ozair, Aaron Courville, and Yoshua Bengio. 2014. Generative Adversarial Nets. In Advances in Neural Information Processing Systems 27, Z. Ghahramani, M. Welling, C. Cortes, N. D. Lawrence, and K. Q. Weinberger (Eds.). Curran Associates, Inc., 2672-2680.
  2. [29]29. Shifeng Zhang, Xiangyu Zhu, Zhen Lei, Hailin Shi, Xiaobo Wang, and Stan Z Li. 2017. S3fd: Single shot scale-invariant face detector. In Proceedings of the IEEE International Conference on Computer Vision. 192-201.

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Authors
Chugh, K., Gupta, P., Dhall, A., & Subramanian, R.
Affiliations
Indian Institute of Technology Ropar (IN)
Venue
Proceedings of the 28th ACM International Conference on Multimedia
Publisher
ACM
Published
2020-10-12
Pages
439-447
OpenAlex
W3031369641
Cited by
225
References
36
Citations by year
2026: 29 · 2025: 61 · 2024: 44 · 2023: 56 · 2022: 23 · 2021: 11 · 2020: 1
FWCI
7.02
Type
conference paper
Language
en
Open access
Locations
  • ACM International Conference on Multimedia (ACM MM) (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Digital Media Forensic Detection
  • Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
  • Physical Sciences › Computer Science › Signal Processing › Speech and Audio Processing
Keywords
deepfake detection, lip synchronization, cross-modal contrastive learning, video manipulation detection

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