no code implementations • 15 Feb 2024 • Matthias Kränzler, Christian Herglotz, André Kaup
By using multiple video codecs for model training, we can predict the complexity of a HW decoder with an error of less than 8% and a minimum error of 4. 54% without using the corresponding HW decoder for training.
no code implementations • 14 Feb 2024 • Matthias Kränzler, Christian Herglotz, André Kaup
We find that AV1 is a sweet spot for optimized software decoder implementations with an additional energy demand of 16. 55% and bitrate savings of -43. 95% compared to VP9.
no code implementations • 26 Oct 2023 • Christian Herglotz, Matthias Kränzler, Xixue Chu, Edouard Francois, Yong He, André Kaup
In this paper, we discuss one aspect of the latest MPEG standard edition on energy-efficient media consumption, also known as Green Metadata (ISO/IEC 232001-11), which is the interactive signaling for remote decoder-power reduction for peer-to-peer video conferencing.
no code implementations • 12 Jun 2023 • Christian Herglotz, Matthias Kränzler, Robert Ludwig, André Kaup
In this paper, we study decoding energy reduction opportunities using temporal-domain filtering and subsampling methods.
1 code implementation • 25 Apr 2023 • Christian Herglotz, Hannah Och, Anna Meyer, Geetha Ramasubbu, Lena Eichermüller, Matthias Kränzler, Fabian Brand, Kristian Fischer, Dat Thanh Nguyen, Andy Regensky, André Kaup
Using additional supporting points inbetween standard points defined by parameters such as the quantization parameter, we assess the interpolation error of the Bj{\o}ntegaard-Delta (BD) calculus and its impact on the final BD value.
no code implementations • 11 Oct 2022 • Christian Herglotz, Werner Robitza, Matthias Kränzler, André Kaup, Alexander Raake
In this paper, we perform a first analysis of both end-user power efficiency and Quality of Experience of a video streaming service.
no code implementations • 30 Sep 2022 • Christian Herglotz, Matthias Kränzler, Robert Schober, André Kaup
We discuss all relevant energy sinks, highlight dependencies with quality-of-service variables as well as video properties, review energy consumption models for different devices from the literature, and aggregate these existing models into a global model for the overall energy consumption of a generic online video service.
no code implementations • 21 Sep 2022 • Matthias Kränzler, Christian Herglotz, André Kaup
In previous research, it was shown that the software decoding energy demand of High Efficiency Video Coding (HEVC) can be reduced by 15$\%$ by using a decoding-energy-rate-distortion optimization algorithm.
no code implementations • 21 Sep 2022 • Matthias Kränzler, Christian Herglotz, André Kaup
In recent studies, it could be shown that the energy demand of Versatile Video Coding (VVC) decoders can be twice as high as comparable High Efficiency Video Coding (HEVC) decoders.
no code implementations • 21 Sep 2022 • Matthias Kränzler, Christian Herglotz, André Kaup
The evaluation shows that the energy demand of the VTM decoder is increased significantly compared to HM and that the increase depends on the coding configuration.
no code implementations • 21 Sep 2022 • Matthias Kränzler, Christian Herglotz, André Kaup
We show that bit streams of the 360{\deg}, HDR, and fisheye video format can be estimated with a mean estimation error lower than 3. 88% if the setups have the same coding bit depth.
no code implementations • 27 Jun 2022 • Matthias Kränzler, Adam Wieckowski, Geetha Ramasubbu, Benjamin Bross, André Kaup, Detlev Marpe, Christian Herglotz
We show that encoding using our proposed coding tool profiles, the decoding energy efficiency is improved by over 25% with a bit rate increase of less than 5% with respect to standard encoding.
no code implementations • 21 Apr 2022 • Christian Herglotz, Yongjun Wen, Bowen Dai, Matthias Kränzler, André Kaup
In this paper we show that a small amount of bit stream features can be used to accurately estimate the energy consumption of state-of-the-art software and hardware accelerated decoder implementations for four different video codecs.
no code implementations • 25 Feb 2022 • Christian Herglotz, Matthias Kränzler, Ruben Mons, André Kaup
For 20 years, the gold standard to evaluate the performance of video codecs is to calculate average differences between ratedistortion curves, also called the "Bj{\o}ntegaard Delta".
no code implementations • 23 Nov 2021 • Matthias Kränzler, Christian Herglotz, André Kaup
IP traffic has increased significantly in recent years, and it is expected that this progress will continue.