Browsing by Author "Beğen, Ali Cengiz"
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Adaptive streaming of content-aware-encoded videos in dash.js
Beğen, Ali Cengiz; Akçay, Mehmet Necmettin; Bentaleb, A.; Giladi, A. (IEEE, 2022-05)In Hypertext Transfer Protocol (HTTP) adaptive streaming, the client makes rate adaptation decisions based on the measured network bandwidth and buffer fullness. This simplifies the adaptation logic; however, it often ... -
Adjusting content work flow infrastructures for HDR
Syed, Y.; Beğen, Ali Cengiz (IEEE, 2018-11-28)This paper discusses what areas of a content workflow infrastructure are affected by integrating new high dynamic range (HDR) video formats into the system while also still continuing to process the standard dynamic range ... -
Are the streamingformat wars over?
Beğen, Ali Cengiz; Syed, Y. (IEEE, 2018-11-28)An average US viewer watches some form of video content five hours a day. The majority ofthe viewed content is still broadcast (over the air, cable, IPTV or satellite), however, the share of the streaming content has been ... -
Automated adaptive playback for encoder-adjudicated live sports
Akgul, T.; Uğur, Deniz; Beğen, Ali Cengiz (IEEE, 2022)In low-latency live streaming, it is not easy to simultaneously avoid stalls and maintain low latency. The trade-off needs to be decided in real time. One of the best tools for controlling the buffer level (hence, the ... -
Automated objective and subjective evaluation of HTTP adaptive streaming systems
Timmerer, C.; Zabrovskiy, A.; Beğen, Ali Cengiz (IEEE, 2018-06-26)Streaming audio and video content currently accounts for the majority of the internet traffic and is typically deployed over the top of the existing infrastructure. We are facing the challenge of a plethora of media players ... -
Bandwidth prediction in low-latency chunked streaming
Bentaleb, A.; Timmerer, C.; Beğen, Ali Cengiz; Zimmermann, R. (The ACM Digital Library, 2019-06)HTTP adaptive streaming with chunked transfer encoding can be used to offer low-latency streaming without sacrificing the coding efficiency. While this allows a media segment to be generated and delivered at the same time, ... -
Bandwidth prediction in low-latency media transport
Bentaleb, A.; Akçay, Mehmet Necmettin; Lim, M.; Beğen, Ali Cengiz; Zimmermann, R. (ACM, 2023-06-16)Designing a robust bandwidth prediction algorithm for low-latency media transport that can quickly adapt to varying network conditions is challenging. In this paper, we present the working principles of a hybrid bandwidth ... -
Benchmarking the second edition of the omnidirectional media format standard
Kara, Burak; Akçay, Mehmet Necmettin; Beğen, Ali Cengiz; Ahsan, S.; Curcio, I. D. D.; Kammachi-Sreedhar, K.; Aksu, E. (IEEE, 2022)Omnidirectional MediA Format (OMAF) is the first worldwide virtual reality (VR) standard to store and distribute immersive media, completed in 2019. Later, in 2021, the second edition of this standard (OMAF v2) was published. ... -
The benefits of server hinting when DASHing or HLSing
Lim, M.; Akçay, Mehmet Necmettin; Bentaleb, A.; Beğen, Ali Cengiz; Zimmermann, R. (ACM, 2022-03-17)Streaming clients almost always compete for the available bandwidth and server capacity. Not every client's playback buffer conditions will be the same, though, nor should be the priority with which the server processes ... -
BoB: Bandwidth prediction for real-time communications using heuristic and reinforcement learning
Bentaleb, A.; Akçay, Mehmet Necmettin; Lim, M.; Beğen, Ali Cengiz; Zimmermann, R. (IEEE, 2023)Bandwidth prediction is critical in any Real-time Communication (RTC) service or application. This component decides how much media data can be sent in real time. Subsequently, the video and audio encoder dynamically adapts ... -
Catching the moment with LoL + in twitch-like low-latency live streaming platforms
Bentaleb, A.; Akçay, Mehmet Necmettin; Lim, M.; Beğen, Ali Cengiz; Zimmermann, R. (IEEE, 2022)Our earlier Low-on-Latency (dubbed as LoL) solution offered an accurate bandwidth prediction and rate adaptation algorithm tailored for live streaming applications that targeted an end-to-end latency of up to two seconds. ... -
Common media client data (CMCD): Initial findings
Bentaleb, A.; Lim, M.; Akçay, Mehmet Necmettin; Beğen, Ali Cengiz; Zimmermann, R. (Association for Computing Machinery, Inc, 2021-07-16)In September 2020, the Consumer Technology Association (CTA) published the CTA-5004: Common Media Client Data (CMCD) specification. Using this specification, a media client can convey certain information to the content ... -
Common media server data (CMSD) - update on implementations and validation of key use cases
Pham, S.; Law, W.; Beğen, Ali Cengiz; Silhavy, D.; Berthelot, B.; Arbanowski, S.; Steglich, S. (ACM, 2023-06-16)The CTA-5006 (Common Media Server Data, CMSD) specification establishes a uniform method for media servers to exchange data with each media object response. The aim is to enhance distribution efficiency, performance, and ... -
Consumer communications and the next generation broadcast networks
Beğen, Ali Cengiz; Kolberg, M.; Merabti, M. (IEEE, 2016)Over 20 years ago the challenge for the communications community was the convergence between networking, telecommunication, and broadcasting. This challenge has been fairly well met, and we now note that around the world ... -
Content-aware playback speed control for low-latency live streaming of sports
Aladağ, Ö. F.; Uğur, Deniz; Akçay, Mehmet Necmettin; Beğen, Ali Cengiz (The ACM Digital Library, 2021)There are two main factors that determine the viewer experience during the live streaming of sports content: latency and stalls. Latency should be low and stalls should not occur. Yet, these two factors work against each ... -
COSMOS on steroids: a Cheap detector for cheapfakes
Akgül, T.; Civelek, Tuğçe Erkılıç; Uğur, Deniz; Beğen, Ali Cengiz (The ACM Digital Library, 2021)The growing prevalence of visual disinformation has become an important problem to solve nowadays. Cheapfake is a new term used for the altered media generated by non-AI techniques. In their recent COSMOS work, the authors ... -
Could head motions affect quality when viewing 360° videos?
Kara, Burak; Akçay, Mehmet Necmettin; Beğen, Ali Cengiz; Ahsan, S.; Curcio, I. D. D.; Aksu, E. B. (IEEE, 2023-04-01)Measuring quality accurately and quickly (preferably in real time) when streaming 360° videos is essential to enhance the user experience. Most quality-of-experience metrics have primarily used viewport quality as a simple ... -
Data-driven bandwidth prediction models and automated model selection for low latency
Bentaleb, A.; Beğen, Ali Cengiz; Harous, S.; Zimmermann, R. (IEEE, 2021)Today's HTTP adaptive streaming solutions use a variety of algorithms to measure the available network bandwidth and predict its future values. Bandwidth prediction, which is already a difficult task, must be more accurate ... -
A distributed approach for bitrate selection in HTTP adaptive streaming
Bentaleb, A.; Beğen, Ali Cengiz; Harous, S.; Zimmermann, R. (ACM, 2018)Past research has shown that concurrent HTTP adaptive streaming (HAS) players behave selfishly and the resulting competition for shared resources leads to underutilization or oversubscription of the network, presentation ...
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