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- research-articleSeptember 2024
MEDUSA: A Dynamic Codec Switching Approach in HTTP Adaptive Streaming
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), Volume 20, Issue 10Article No.: 319, Pages 1–23https://doi.org/10.1145/3656175HTTP Adaptive Streaming (HAS) solutions utilize various Adaptive BitRate (ABR) algorithms to dynamically select appropriate video representations, aiming at adapting to fluctuations in network bandwidth. However, current ABR implementations have a ...
- research-articleJuly 2024JUST ACCEPTED
COBIRAS: Offering a Continuous Bit Rate Slide to Maximize DASH Streaming Bandwidth Utilization
- Michael Seufert,
- Marius Spangenberger,
- Fabian Poignée,
- Florian Wamser,
- Werner Robitza,
- Christian Timmerer,
- Tobias Hossfeld
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), Just Accepted https://doi.org/10.1145/3677379Reaching close-to-optimal bandwidth utilization in Dynamic Adaptive Streaming over HTTP (DASH) systems can, in theory, be achieved with a small discrete set of bit rate representations. This includes typical bit rate ladders used in state-of-the-art DASH ...
- research-articleJune 2024
Precise positioning utilizing smartphone GNSS/IMU integration with the combination of Galileo high accuracy service (HAS) corrections and broadcast ephemerides
AbstractThe Galileo High Accuracy Service (HAS) has undergone substantial development in recent years, offering users free access to GPS and Galileo satellite orbit, clock, and code bias corrections for Precise Point Positioning (PPP) on a global scale. ...
- research-articleApril 2024
DIGITWISE: Digital Twin-based Modeling of Adaptive Video Streaming Engagement
MMSys '24: Proceedings of the 15th ACM Multimedia Systems ConferencePages 78–88https://doi.org/10.1145/3625468.3647613As the popularity of video streaming entertainment continues to grow, understanding how users engage with the content and react to its changes becomes a critical success factor for every stakeholder. User engagement, i.e., the percentage of video the ...
- research-articleNovember 2023
Galileo high accuracy service performance and anomaly mitigation capabilities
AbstractPrecise point positioning (PPP) and real-time kinematic techniques are interesting in several sectors, especially for autonomous applications. These users have high accuracy needs coupled with stringent requirements on continuity, availability, ...
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- research-articleSeptember 2023
GHASP: a Galileo HAS parser
AbstractGalileo High Accuracy Service (HAS) corrections are broadcast through the E6B signal using a high-parity vertical Reed-Solomon encoding scheme, which reduces message recovery time and improves transmission reliability. To recover HAS corrections, ...
- research-articleJune 2023
QoE- and Energy-aware Content Consumption For HTTP Adaptive Streaming
MMSys '23: Proceedings of the 14th ACM Multimedia Systems ConferencePages 348–352https://doi.org/10.1145/3587819.3593029Video streaming services account for the majority of today's traffic on the Internet, and according to recent studies, this share is expected to continue growing. Given this broad utilization, research in video streaming is recently moving towards energy-...
- research-articleJune 2023
Cross that boundary: Investigating the feasibility of cross-layer information sharing for enhancing ABR decision logic over QUIC
NOSSDAV '23: Proceedings of the 33rd Workshop on Network and Operating System Support for Digital Audio and VideoPages 50–57https://doi.org/10.1145/3592473.3592563With HTTP Adaptive Streaming (HAS), client-side Adaptive Bitrate (ABR) algorithms drive the (quality-variant) scheduling and downloading of media segments. These ABR algorithms are implemented in the application layer and can therefore base their ...
- review-articleJune 2023
Are current clinical studies on artificial intelligence-based medical devices comprehensive enough to support a full health technology assessment? A systematic review
Artificial Intelligence in Medicine (AIIM), Volume 140, Issue Chttps://doi.org/10.1016/j.artmed.2023.102547Abstract IntroductionArtificial Intelligence-based Medical Devices (AI-based MDs) are experiencing exponential growth in healthcare. This study aimed to investigate whether current studies assessing AI contain the information ...
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Highlights- Existing HTA frameworks must be adjusted to assess AI-based MDs appropriately.
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- review-articleNovember 2022
Computerized analysis of speech and voice for Parkinson's disease: A systematic review
Computer Methods and Programs in Biomedicine (CBIO), Volume 226, Issue Chttps://doi.org/10.1016/j.cmpb.2022.107133Highlights- Speech and voice may be valuable markers for PD.
- Large differences between ...
Speech impairment is an early symptom of Parkinson's disease (PD). This study has summarized the literature related to speech and voice in detecting PD and assessing its severity.
... - research-articleOctober 2022
Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal
AbstractThe High Accuracy Service (HAS) is an upcoming addition to the Galileo service portfolio that offers free correction data for precise point positioning in real-time. Beyond terrestrial and aeronautical applications, precise orbit determination (...
- short-paperAugust 2022
Towards low latency live streaming: challenges in a real-world deployment
MMSys '22: Proceedings of the 13th ACM Multimedia Systems ConferencePages 315–318https://doi.org/10.1145/3524273.3532904Over-the-Top (OTT) service providers need faster, cheaper, and Digital Rights Management (DRM)-capable video streaming solutions. Recently, HTTP Adaptive Streaming (HAS) has become the dominant video delivery technology over the Internet. In HAS, videos ...
- research-articleDecember 2021
Days of future past: an optimization-based adaptive bitrate algorithm over HTTP/3
EPIQ '21: Proceedings of the 2021 Workshop on Evolution, Performance and Interoperability of QUICPages 8–14https://doi.org/10.1145/3488660.3493802HTTP Adaptive Streaming (HAS) has become a predominant technique for delivering videos in the Internet. Due to its adaptive behavior according to changing network conditions, it may result in video quality variations that negatively impact the Quality ...
- research-articleSeptember 2021Best Paper
Machine Learning Based Video Coding Enhancements for HTTP Adaptive Streaming
MMSys '21: Proceedings of the 12th ACM Multimedia Systems ConferencePages 418–422https://doi.org/10.1145/3458305.3478468Video traffic comprises the majority of today's Internet traffic, and HTTP Adaptive Streaming (HAS) is the preferred method to deliver video content over the Internet. Increasing demand for video and the improvements in the video display conditions over ...
- research-articleSeptember 2021
Policy-driven Dynamic HTTP Adaptive Streaming Player Environment
MMSys '21: Proceedings of the 12th ACM Multimedia Systems ConferencePages 408–412https://doi.org/10.1145/3458305.3478466Video streaming services account for the majority of today's traffic on the Internet. Although the data transmission rate has been increasing significantly, the growing number and variety of media and higher quality expectations of users have led ...
- research-articleSeptember 2021
CDN and SDN Support and Player Interaction for HTTP Adaptive Video Streaming
MMSys '21: Proceedings of the 12th ACM Multimedia Systems ConferencePages 398–402https://doi.org/10.1145/3458305.3478464Video streaming has become one of the most prevailing, bandwidth-hungry, and latency-sensitive Internet applications. HTTP Adaptive Streaming (HAS) has become the dominant video delivery mechanism over the Internet. Lack of coordination among the ...
- research-articleSeptember 2021
Multi-access Edge Computing for Adaptive Bitrate Video Streaming
MMSys '21: Proceedings of the 12th ACM Multimedia Systems ConferencePages 378–382https://doi.org/10.1145/3458305.3478460Video streaming is the most used service in mobile networks and its usage will continue growing in the upcoming years. Due to this increase, content delivery should be improved as a key aspect of video streaming service, supporting higher bandwidth ...
- research-articleJune 2020
Performance Analysis of ACTE: A Bandwidth Prediction Method for Low-latency Chunked Streaming
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), Volume 16, Issue 2sArticle No.: 69, Pages 1–24https://doi.org/10.1145/3387921HTTP adaptive streaming with chunked transfer encoding can offer low-latency streaming without sacrificing the coding efficiency. This allows media segments to be delivered while still being packaged. However, conventional schemes often make widely ...
- research-articleMay 2020
Scalable Application- and User-aware Resource Allocation in Enterprise Networks Using End-Host Pacing
ACM Transactions on Modeling and Performance Evaluation of Computing Systems (TOMPECS), Volume 5, Issue 3Article No.: 11, Pages 1–41https://doi.org/10.1145/3381996Providing scalable user- and application-aware resource allocation for heterogeneous applications sharing an enterprise network is still an unresolved problem. The main challenges are as follows: (i) How do we define user- and application-aware shares ...
When they go high, we go low: low-latency live streaming in dash.js with LoL
MMSys '20: Proceedings of the 11th ACM Multimedia Systems ConferencePages 321–326https://doi.org/10.1145/3339825.3397043Live streaming remains a challenge in the adaptive streaming space due to the stringent requirements for not just quality and rebuffering, but also latency. Many solutions have been proposed to tackle streaming in general, but only few have looked into ...