Tile-based Streaming of 8K Omnidirectional Video: Subjective and Objective QoE Evaluation
Raimund Schatz (AIT Austrian Institute of Technology), Anatoliy Zabrovskiy (Alpen-Adria Universität Klagenfurt), Christian Timmerer (Alpen-Adria Universität Klagenfurt, Bitmovin Inc.)
Abstract: Omnidirectional video (ODV) streaming applications are becoming increasingly popular. They enable a highly immersive experience as the user can freely choose her/his field of view within the 360-degree environment. Current deployments are fairly simple but viewport-agnostic which inevitably results in high storage/bandwidth requirements and low Quality of Experience (QoE). A promising solution is referred to as tile- based streaming which allows to have higher quality within the user’s viewport while quality outside the user’s viewport could be lower. However, empirical QoE assessment studies in this domain are still rare. Thus, this paper investigates the impact of different tile-based streaming approaches and configurations on the QoE of ODV. We present the results of a lab-based subjective evaluation in which participants evaluated 8K omnidirectional video QoE as influenced by different (i) tile-based streaming approaches (full vs. partial delivery), (ii) content types (static vs. moving camera), and (iii) tile encoding quality levels determined by different quantization parameters. Our experimental setup is characterized by high reproducibility since relevant media delivery aspects (including the user’s head movements and dynamic tile quality adaptation) are already rendered into the respective processed video sequences. Additionally, we performed a complementary objective evaluation of the different test sequences focusing on bandwidth efficiency and objective quality metrics. The results are presented in this paper and discussed in detail which confirm that tile-based streaming of ODV improves visual quality while reducing bandwidth requirements.
Index Terms: Omnidirectional Video, Tile-based Streaming, Subjective Testing, Objective Metrics, Quality of Experience
Acknowledgment: This work was supported in part by the Austrian Research Promotion Agency (FFG) under the Next Generation Video Streaming project “PROMETHEUS”.
Our paper on “Multi-Codec DASH Dataset” has been accepted for publication at ACM Multimedia Systems (MMSys) 2018
. Details and links to our dataset can be found here
. A pre-print of our paper is also available on arXiv.org
. Finally, Bitmovin presented it on their blog as well as NABShow 2018, see further details here
We are looking forward meeting you at MMSys 2018.
We are proud to announce that our article “A Comparative Study of DASH Representation Sets Using Real User Characteristics” has been accepted for publication in the 26th ACM SIGMM Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV 2016) co-located with MMsys 2016 and held in Klagenfurt am Wörthersee, Austria, on May 10-13, 2016.
We are looking to forward to meet you @ NOSSDAV 2016 and @ MMSys 2016
The ITEC project around adaptive media streaming over HTTP – which significantly contributed to the MPEG-DASH standard – has been nominated for the prestigious Houskapreis 2016 in the category of ‘academic research’ (German “Universitäre Forschung”).
The project will presented to the public on April 28, 2016 in Vienna at the Museum of Applied Arts where the actual winner will be announced.
We are proud to announce that our article Investigating the Performance of Pull-based Dynamic Adaptive Streaming in NDN has been accepted for publication in IEEE Journal on Selected Areas in Communications (Special Issue on Video Distribution over Future Internet). The article will be published in the second quarter of 2016.
We are proud to announce that the ACM MMSys 2016 will be held in Klagenfurt, Austria. A preliminary call for papers is already available here. We want to emphasize that co-located to the MMSys 2016 there is a range of high quality workshop like the NOSSDAV (Network and Operating Systems Support for Digital Audio and Video Workshop CFP), MoVid (Mobile Video Workshop), and MMVE (Massively Multiuser Virtual Environments Workshop).
For the conference the preliminary dates are:
Submission Deadline: November 27, 2015
Reviews available to Authors: January 15, 2016
Rebuttal Deadline: January 22, 2016
Acceptance Notification: January 29, 2015
Camera-ready Deadline: March 11, 2016
General Chair: Christian Timmerer, AAU
TPC Chair: Ali C. Begen, CISCO
Dataset Chair: Karel Fliegel, CTU
Demo Chairs: Omar Niamut, TNO & Michael Zink, UMass
Proceedings Chair: Benjamin Rainer, AAU
Asia: Sheng-Wei Chen (Kuan-Ta), Academia Sinica
Middle East: Mohamed Hefeeda, QCRI
Europe: Vincent Charvillat, IRIT-ENSEEIHT-Toulouse Univ.
Local Chair: Laszlo Böszörmenyi, AAU
We are proud to announce that we are going to attend this years ICME in Torino, Italy.
The following full paper of Christopher Mueller (Bitmovin GmbH) got accepted for an oral presentation:
Oscillation Compensating Dynamic Adaptive Streamin Over HTTP, Christopher Mueller (Bitmovin GmbH), Stefan Lederer (bitmovin GmbH), Reinhard Grandl (bitmovin GmbH), Christian Timmerer (Alpen-Adria-Universität Klagenfurt, Austria)
We further have two workshop papers that investigate multimedia streaming in ICN/NDN/CCN at the MuSIC workshop co-located with the ICME:
Towards Controller-aided Multimedia Dissemination in Named Data Networking, Florian Bacher (Alpen-Adria-Universität Klagenfurt, Austria), Benjamin Rainer (Alpen-Adria-Universität Klagenfurt, Austria), Hermann Hellwagner (Alpen-Adria-Universität Klagenfurt, Austria)
Modelling the Impact of Caching and Popularity on Concurrent Adaptive Multimedia Streams in Information-Centric Networks, Christian Kreuzberger (Alpen-Adria-Universität Klagenfurt, Austria), Benjamin Rainer (Alpen-Adria-Universität Klagenfurt, Austria), Hermann Hellwagner (Alpen-Adria-Universität Klagenfurt, Austria)
Moreover, Christian Timmer and Ali C. Begen will give their superior Tutorial on Over-the-Top Content Delivery, do not miss it!
Over-the-Top Content Delivery: State of the Art and Challenges Ahead, Christian Timmerer (Alpen-Adria-Universität Klagenfurt, Austria), Ali C. Begen (CISCO)
bitcodin.com is the future of transcoding, providing a high performance cloud-service to transcode multimedia content orders of magnitudes faster than real-time, even for highest 4K qualities and beyond.
Try it now for free at www.bitcodin.com!
For more information: MuSIC Workshop
Topics of Interests
Video-on-demand applications, prototypes, and demos over ICN
Voice/video conferencing applications, prototypes, and demos over ICN
Novel multimedia applications, prototypes, and demos over ICN
Error and loss control and mitigation
Congestion detection and control
Naming and routing of media streams
Forwarding, aggregation, replication strategies (interests and content)
Caching effects (probably unexpected and/or undesired)
DRM and its impact on or interplay with caching
Content adaptation in ICN
Media stream adaptation, bandwidth estimation etc. on clients
Use of scalable media content
Fairness issues and metrics in ICN
Security and Privacy issues for multimedia streaming over ICN
QoS and QoE mechanisms and metrics: impact on and interplay with ICN
Evaluation methodologies, in particular ICN simulation and experimental testbeds
Deployment and scalability issues
Paper Submission: March 30, 2015
Acceptance Notification: April 30, 2015
Camera Ready: May 15, 2015
Workshop Date: July 3, 2015
We are proud to announce that our Demo paper at the ACM MMSys 2015 in Portland, from 18th to 20th of March, got accepted. The demonstration will show our latest cutting edge research on Inter-Destination Multimedia Synchronization. For a sneak preview of the demonstration check out this video.