Depth-Aware Stereo Bitrate Ladder Optimization with Decoding-Time Constraints for HTTP Adaptive Streaming   IEEE International Workshop on Multimedia Signal Processing (MMSP) September 22 – September 24, 2026 Istanbul, Turkey [PDF] Kamran Qureshi (AAU, Austria), Hadi Amirpour (AAU, Austria), Farzad Tashtarian (AAU, Austria), Christian Timmerer (AAU, Austria) Abstract: Per-title bitrate ladder construction selects bitrate–resolution pairs based on content-specific characteristics, enabling improved compression efficiency compared […]

Viewport-Aware Adaptive Encoding for Enhanced 360-degree Video Streaming   International Workshop on Multimedia Signal Processing (MMSP) September 22 – September 24, 2026 Istanbul, Türkiye [PDF] Mahmoud Z. A. Wahba (University of Padova), Mohammad Ghasempour (AAU, Austria), Sara Baldoni (University of Padova), Christian Timmerer (AAU, Austria), Federica Battisti (University of Padova), Hadi Amirpour (AAU, Austria) Abstract: Streaming 360-degree video content in Virtual Reality (VR) poses significant challenges, […]

Selective Multi-Pass Encoding for Cost-Efficient Video Streaming International Broadcasting Convention (IBC) [PDF] Mohammad Ghasempour (AAU, Austria), Hadi Amirpour (AAU, Austria), and Christian Timmerer (AAU, Austria) Abstract: As video streaming scales across platforms, resolutions, and devices, encoding efficiency has become critical to maintaining quality while controlling computational cost and energy consumption. Multi-pass encoding is widely used in streaming workflows to improve compression […]

Thin-Client Interactive Gaussian Adaptive Streaming over HTTP/3   ACM Multimedia 2026 November 10 – November 14, 2026 Rio de Janeiro, Brazil [PDF] Emanuele Artioli (AAU, Austria), Philipp Fößl (AAU, Austria), Shao-Yang Hung (National Tsinghua University, Taiwan), Philipp Fößl (AAU, Austria), Daniele Lorenzi (Bitmovin, Austria), Farzad Tashtarian (AAU, Austria),  Mahdi Dolati (Sharif University of Technology, Iran), Cheng-Hsin Hsu (National Tsinghua University, Taiwan), Christian Timmerer (AAU, Austria) Abstract: Recent advancements in 3D Gaussian Splatting (3DGS) […]

Title: Asymmetry-Aware No-Reference Video Quality Assessment via Dual-Region Temporal Modeling Authors: MohammadAli Hamidi, Hadi Amirpour, Christian Timmerer, Luigi Atzori Abstract: Saliency and semantic-driven asymmetric encoding enable significant bitrate savings while maintaining a comparable viewing experience. This paper presents a No-Reference (NR) Video Quality Assessment (VQA) model for evaluating Asymmetrically Encoded Videos (AEV), addressing challenges such as varying compression […]