Daniele Lorenzi

I am a postdoctoral researcher at the Department of Information Technology, Alpen-Adria-Universität, Klagenfurt, Austria, where I received my Ph.D. in Computer Science. I currently focus on the adaptive-bitrate (ABR) strategies of the player component in video streaming in the Christian-Doppler Laboratory ATHENA, led by Prof. Christian Timmerer. I received my master degree in ICT Engineering and my bachelor degree in Information Engineering from the Department of Information Engineering, University of Padua, Italy. My research interests encompass Video Streaming, Multimedia Networking, Machine and Deep Learning, QoS and QoE Improvement.

News

• On Thursday, July 31, 2025, I successfully defended my PhD thesis (QoE- and Energy-aware Content Consumption for HTTP Adaptive Streaming) under the supervision of Prof. Hermann Hellwagner and Prof. Christian Timmerer. The defense was chaired by Assoc.-Prof. DI Dr. Klaus Schöffmann and the examiners were Assoc.–Prof. Luca De Cicco and Dr.-Ing. habil. Christian Herglotz. More information about this here.
• Our paper "GenStream: Semantic Streaming Framework for Generative Reconstruction of Human-centric Media", has been accepted by the 33rd ACM International Conference on Multimedia (MM'25), October 27-31, 2025, Dublin, Ireland.
• Our paper "Receiving Kernel-Level Insights via eBPF: Can ABR Algorithms Adapt Smarter?", has been accepted by the Würzburg Workshop on Next-Generation Communication Networks (WueWoWAS'25), October 6-8, 2025, Würzburg, Germany.
• Our paper "Real-Time AI-Driven Avatar Generation for Sign Language in HTTP Adaptive Streaming", has been accepted by the 3rd ACM SIGCOMM Workshop on Emerging Multimedia Systems (EMS'25), September 8, 2025, Coimbra, Portugal.
• TPC Chair, IEEE ICME Workshop on Surpassing Latency Limits in Adaptive Live Video Streaming (LIVES), 2025.
• Our paper "ALPHAS: Adaptive Bitrate Ladder Optimization for Multi-Live Video Streaming", has been accepted by the IEEE International Conference on Computer Communications (INFOCOM'25), May 19-22, 2025, London, United Kingdom.
• Our paper "Adaptive Quality and Energy Enhancement in Video Streaming with RecABR", has been accepted by the 4th Mile-High Video Conference (MHV’25), February 18–20, 2025, Marriott DTC, Denver.
• Our paper "Generative AI for Realistic Voice Dubbing Across Languages", has been accepted by the 4th Mile-High Video Conference (MHV’25), Marriott DTC, Denver, February 18–20, 2025.
• TPC Chair, ACM Mile-High Video (MHV), 2025.
• Our paper "MEDUSA: A Dynamic Codec Switching Approach in HTTP Adaptive Streaming", has been accepted for publication in ACM Transactions on Multimedia Computing Communications and Applications, 2024.
• Our paper "COCONUT: Content Consumption Energy Measurement Dataset for Adaptive Video Streaming ", has been accepted by the 15th ACM Multimedia Systems Conference (MMSys'24)- Open-source Software and Datasets Track, 15-18 April, 2024, Bari, Italy.
• Our paper "E-WISH: An Energy-aware ABR Algorithm For Green HTTP Adaptive Video Streaming", has been accepted by the 3rd Mile-Highe Video Conference (MHV'24), February 11-14, 2024, Marriott DTC, Denver.
• Our paper "MCOM-Live: A Multi-Codec Optimization Model at the Edge for Live Streaming " , has been accepted by IEEE MMM Conference, 2022.
• Our paper "DoFP+: An HTTP/3-based Adaptive Bitrate Approach Using Retransmission Techniques" , has been accepted by IEEE ACCESS Journal, 2022.
• Our paper "Days of Future Past: An Optimization-based Adaptive Bitrate Algorithm Over HTTP/3" , has been accepted by the Workshop on Evolution, Performance and Interoperability of QUIC (EPIQ), December 7, 2021.

Experience

Journal Papers

MEDUSA: A Dynamic Codec Switching Approach in HTTP Adaptive Streaming

ACM Transactions on Multimedia Computing Communications and Applications (TOMM)

Lorenzi, D., Tashtarian, F., Hellwagner, H., Timmerer. C.

January 2024

DoFP+: An HTTP/3-based Adaptive Bitrate Approach Using Retransmission Techniques

IEEE Access

Nguyen, M., Lorenzi, D., Tashtarian, F., Hellwagner, H., Timmerer, C.

January 2022

Conference Papers

GenStream: Semantic Streaming Framework for Generative Reconstruction of Human-centric Media

The 33rd ACM International Conference on Multimedia (MM'25)

Dublin, Ireland

Artioli, E., Lorenzi, D., Vats, S., Tashtarian, F., Timmerer, C.

October 27-31, 2025

Receiving Kernel-Level Insights via eBPF: Can ABR Algorithms Adapt Smarter?

Würzburg Workshop on Next-Generation Communication Networks (WueWoWAS'25)

Würzburg, Germany

Ghasemi, M., Lorenzi, D., Dolati, M., Tashtarian, F., Gorinsky, S., Timmerer, C.

October 6-8, 2025

Real-Time AI-Driven Avatar Generation for Sign Language in HTTP Adaptive Streaming

The 3rd ACM SIGCOMM Workshop on Emerging Multimedia Systems (EMS'25)

Coimbra, Portugal

Lorenzi, D., Artioli, E., Tashtarian, F., Timmerer, C.

September 8, 2025

ALPHAS: Adaptive Bitrate Ladder Optimization for Multi-Live Video Streaming

IEEE International Conference on Computer Communications (INFOCOM'25)

London, United Kingdom

Tashtarian, F., Dolati, M., Lorenzi, D., Mozhganfar, M., Gorinsky, S., Khonsari, A., Timmerer, C., Hellwagner, H.

May 19-22, 2025

Generative AI for Realistic Voice Dubbing Across Languages

The 4th Mile-High Video Conference (MHV’25)

Marriott DTC, Denver

Artioli E., Lorenzi, D., Tashtarian, F., Timmerer, C.

February 18–20, 2025

Adaptive Quality and Energy Enhancement in Video Streaming with RecABR

The 4th Mile-High Video Conference (MHV’25)

Marriott DTC, Denver

Lorenzi, D., Tashtarian, F., Timmerer, C.

February 18–20, 2025

COCONUT: Content Consumption Energy Measurement Dataset for Adaptive Video Streaming

The 15th ACM Multimedia Systems Conference (MMSys'24)

Bari, Italy

Tashtarian, F., Lorenzi, D., Amirpour, H., Afzal, S., Timmerer, C.

April 15-18, 2024

E-WISH: An Energy-aware ABR Algorithm For Green HTTP Adaptive Video Streaming

The International Conference on Mile-High Video (MHV)

Marriott DTC, Denver, USA

Lorenzi, D., Nguyen, M., Tashtarian, F., Timmerer, C.

February 11-14, 2024

Community-Based QoE Enhancement for User-Generated Content Live Streaming

The 13th International Conference on Computer and Knowledge Engineering (ICCKE)

Mashad, Iran

Saeedinia, R., Fatemi, S.O., Lorenzi, D., Tashtarian, F., Timmerer, C.

November 1-2, 2023

QoE- and Energy-aware Content Consumption For HTTP Adaptive Streaming

The 14th ACM Multimedia Systems Conference (MMSys'24) - Doctoral Symposium

Vancouver, Canada

Lorenzi, D.

June 7-10, 2023

MCOM-Live: A Multi-Codec Optimization Model at the Edge for Live Streaming

The 29th International Conference on MultiMedia Modeling (MMM)

Bergen, Norway

Lorenzi, D., Tashtarian, F., Amirpour, H., Timmerer, C., Hellwagner, H.

January 9-12, 2023

Days of Future Past: An Optimization-based Adaptive Bitrate Algorithm over HTTP/3

The 3rd ACM CoNEXT Workshop on the Evolution, Performance, and Interoperability of QUIC (EPIQ)

Munich, Germany

Lorenzi, D., Nguyen, M., Tashtarian, F., Timmerer, C., Hellwagner, H., Milani, S.

December 7-10, 2021

Teaching

Academic Services

• Member of Technical Program Committee (TPC):
  • ACM Mile-High Video (MHV), 2025
  • IEEE ICME Workshop on Surpassing Latency Limits in Adaptive Live Video Streaming (LIVES), 2025
• Peer-reviewer:
  • International Conference on Visual Communications and Image Processing (VCIP)
  • ACM Multimedia (MM)
  • ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM)
  • IEEE Transactions on Mobile Computing (TMC)
  • ACM Mile-High Video (MHV)
  • IEEE ICME Workshop on Surpassing Latency Limits in Adaptive Live Video Streaming (LIVES)