Entries by Nina

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GMSys 2023: First International ACM Green Multimedia Systems Workshop, 7 – 10 June 2023, Vancouver, Canada

The threat of climate change requires a drastic reduction of global greenhouse gas (GHG) emissions in several societal spheres. Thus, this also applies to reducing and rethinking the energy consumption of digital technologies. Video streaming technology is responsible for more than half of digital technology’s global impact [ref]. There is rapid growth, also now with […]

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

29th International Conference on MultiMedia Modeling 9 – 12 January 2023 | Bergen, Norway Daniele Lorenzi (Alpen-Adria-Universität Klagenfurt), Farzad Tashtarian (Alpen-Adria-Universität Klagenfurt), Hadi Amirpour (Alpen-Adria-Universität Klagenfurt), Christian Timmerer (Alpen-Adria-Universität Klagenfurt), and Hermann Hellwagner (Alpen-Adria-Universität Klagenfurt) Abstract: HTTP Adaptive Streaming (HAS) is the predominant technique to deliver video contents across the Internet with the increasing demand of its […]

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Paper accepted – OTEC: An Optimized Transcoding Task Scheduler for Cloud and Fog Environments

OTEC: An Optimized Transcoding Task Scheduler for Cloud and Fog Environments ACM CoNEXT 2022 – ViSNext Samira Afzal (Alpen-Adria-Universität Klagenfurt), Farzad Tashtarian (Alpen-Adria-Universität Klagenfurt), Hamid Hadian (Alpen-Adria-Universität Klagenfurt), Alireza Erfanian (Alpen-Adria-Universität Klagenfurt), Christian Timmerer (Alpen-Adria-Universität Klagenfurt), and Radu Prodan (Alpen-Adria-Universität Klagenfurt) Abstract: Encoding and transcoding videos into multiple codecs and representations is a significant challenge that requires […]

Paper accepted – EMES: Efficient Multi-Encoding Schemes for HEVC-based Adaptive Bitrate Streaming

Transactions on Multimedia Computing Communications and Applications (TOMM) Journal Website Vignesh V Menon (Alpen-Adria-Universität Klagenfurt),  Hadi Amirpour (Alpen-Adria-Universität Klagenfurt), Mohammad Ghanbari (School of Computer Science and Electronic Engineering, University of Essex, Colchester, UK), and Christian Timmerer (Alpen-Adria-Universität Klagenfurt) Abstract: In HTTP Adaptive Streaming (HAS), videos are encoded at multiple bitrates and spatial resolutions (i.e., representations) to adapt to the heterogeneity of […]

Live is Life: Efficient Two-pass Per-title Encoding for Adaptive Live Streaming (Industry demo at ICIP 2022)

2022 IEEE International Conference on Image Processing (ICIP) October 16-19, 2022 | Bordeaux, France Conference Website   Abstract: According to the Bitmovin Video Developer Report 2021, live streaming at scale has the highest scope for innovation in video streaming services. Currently, there are no open-source implementations available which can predict video complexity for live streaming applications. […]

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

IEEE Access, A Multidisciplinary, Open-access Journal of the IEEE [PDF] Minh Nguyen (Christian Doppler Laboratory ATHENA, Alpen-Adria-Universität Klagenfurt), Daniele Lorenzi (Christian Doppler Laboratory ATHENA, Alpen-Adria-Universität Klagenfurt), Farzad Tashtarian (Christian Doppler Laboratory ATHENA, Alpen-Adria-Universität Klagenfurt), Hermann Hellwagner (Christian Doppler Laboratory ATHENA, Alpen-Adria-Universität Klagenfurt), Christian Timmerer (Christian Doppler Laboratory ATHENA, Alpen-Adria-Universität Klagenfurt) (*) Minh Nguyen and Daniele Lorenzi contributed equally to […]

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Internship 2023 at ATHENA

At Christian Doppler laboratory ATHENA, we offer an internship*) for 2023 for Master Students and we kindly request your applications until the 20th of January 2023 with the following data (in German or English): CV Record of study/transcript (“Studienerfolgsnachweis”) *) A 3 months period in 2023 (with an exact time slot to be discussed) with […]

Paper accepted – Content-adaptive Encoder Preset Prediction for Adaptive Live Streaming

2022 Picture Coding Symposium (PCS) December 7-9, 2022 | San Jose, CA, USA Conference Website Vignesh V Menon (Alpen-Adria-Universität Klagenfurt),  Hadi Amirpour (Alpen-Adria-Universität Klagenfurt), Prajit T Rajendran (Universite Paris-Saclay, France), Mohammad Ghanbari (School of Computer Science and Electronic Engineering, University of Essex, Colchester, UK), and Christian Timmerer (Alpen-Adria-Universität Klagenfurt) Abstract: In live streaming applications, a fixed […]

Paper accepted – Light-weight Video Encoding Complexity Prediction using Spatio Temporal Features

2022 IEEE 24th International Workshop on Multimedia Signal Processing (MMSP) September 26-28, 2022 | Shanghai, China Conference Website Hadi Amirpour (Alpen-Adria-Universität Klagenfurt), Prajit T Rajendran (Universite Paris-Saclay, Paris, France), Vignesh V Menon (Alpen-Adria-Universität Klagenfurt),   Mohammad Ghanbari (School of Computer Science and Electronic Engineering, University of Essex, Colchester, UK), and Christian Timmerer (Alpen-Adria-Universität Klagenfurt) Abstract: The increasing demand for high-quality and […]