arXiv Computer Vision

PERSIST: Persistent-State Discrimination for Shot Boundary Detection

PERSIST redefines shot boundary detection as a task of semantic discrimination, requiring a persistent update of a video’s latent temporal state rather than a transient visual change. It employs a FiLM‑conditioned sinusoidal representation network and a structured discriminator that fuses local change, transient impulse, and return‑to‑trend cues into a single interpretable per‑frame signal. The method achieves comparable recall to leading detectors while significantly reducing false positives from flash, text overlay, and archival artifacts, and it is trained solely on real transitions from ClipShots.

arXiv AI
Jul 7

SPLIT: Training-Free AI-Generated and Partially Edited Video Detection via Spatial Patch-Level Incoherence and Temporal Roughness

arXiv:2607. 02886v1 Announce Type: cross Abstract: Deploying AI-generated video detectors in real-world services demands an ultra-low false positive rate (FPR) on real videos to avoid falsely rejecting authentic content, a regime where standard metrics such as AUROC fail to reflect actual operating behavior.

By Jongyeop Hyun, Hyounghun Kim
arXiv Computer Vision
Oct 9

Stop My Dancing! Understanding, Detecting and Attributing Motion-Aware Deepfake Videos

The paper introduces Motion‑Aware Deepfake (MAD) videos, a new class of deepfakes generated by pose‑guided diffusion models that can animate entire human figures. To study this threat, the authors build the first MAD‑specific benchmark with 1.5 million frames from 1,363 real and 30,122 synthetic videos, and analyze the subtle high‑frequency artifacts and spectral fingerprints that arise from limited input frames. Leveraging these insights, they propose MoDA, a defense framework that combines spatial semantics with steganalysis‑rich frequency features, achieving high detection and attribution accuracy across in‑distribution, cross‑dataset, and zero‑shot scenarios, and demonstrating robustness against adaptive attacks.

By Fazhong Liu, Yan Meng, Tian Dong, Guoxing Chen, Haojin Zhu
arXiv Computer Vision
Sep 1

SNF-Bench: Separating Static Drift from Natural Flow in Long-Horizon Fixed-Camera Video Generation

SNF-Bench is an evaluation framework for long‑horizon fixed‑camera video generation that separates static background fidelity from dynamic flow persistence and drift leakage. It reports these three factors independently, using controlled injections of translation, rotation, scale drift, and progressive freezing to validate each metric’s sensitivity. Auditing public checkpoints shows that whole‑frame motion metrics can mislead, while SNF‑Bench reveals the true trade‑offs between motion quality and background stability.

By Matiur Rahman Minar, Seunghun Oh, Ganghyeon Jeong, Unsang Park
arXiv AI
Jun 16

Steady-Forcing: Balancing Spatial Persistence and Motion Continuity in Long-Horizon Nature Video Diffusion

arXiv:2606. 14732v1 Announce Type: cross Abstract: Autoregressive video diffusion models enable streaming generation but often degrade over long rollouts: static scene layouts drift, while mechanisms that improve spatial stability tend to suppress motion, causing natural flows such as water, fire, or smoke to stagnate.

By Matiur Rahman Minar, Seunghun Oh, GangHyeon Jeong, Unsang Park
arXiv AI
Jul 28

EgoPlay: Event-Triggered Video Editing for Egocentric Streams

arXiv:2607. 24560v1 Announce Type: cross Abstract: We introduce EgoPlay, an event-triggered video-to-video editor for egocentric streams, obtained by fine-tuning a pretrained V2V diffusion transformer on event-conditioned data built primarily from Ego4D.

By Jinjie Mai, Gordon Guocheng Qian, Willi Menapace, Arpit Sahni, Chaoyang Wang, Ashkan Mirzaei, Runjia Li, Sergey Tulyakov, Bernard Ghanem, Peter Wonka, Rameen Abdal
arXiv Machine Learning
Sep 4

Loss Knows Best: Detecting Annotation Errors in Videos via Loss Trajectories

The paper introduces Cumulative Sample Loss (CSL), a metric derived from checkpoint loss dynamics, to detect annotation errors in temporally labeled videos. CSL captures persistent disagreement between a frame’s annotation and the learned visual‑temporal structure, flagging high‑CSL frames as likely mislabeling or temporal disordering. Experiments on EgoPER and Cholec80 show CSL outperforming final‑checkpoint loss, achieving up to a 4.2‑point AUC improvement on EgoPER and 92.0/78.5 AUC on Cholec80.

By Praditha Alwis, Soumyadeep Chandra, Deepak Ravikumar, Kaushik Roy