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Wyszukujesz frazę "Hoppe, Christian" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
A Comparison Study of DASH Technique by Video Streaming over IP with the Use of RTP and HTTP Protocols
Autorzy:
Hoppe, Christian
Uhl, Tadeus
Powiązania:
https://bibliotekanauki.pl/articles/309066.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
H.265
IP network technology
MPEG-DASH
network management
QoS measurement
video streaming
Opis:
Today’s Internet knows no bounds. New applications are marketed every single day. Many of them incorporate video sequences. These must be transported over the Internet quickly (often in real time). However, the Internet has not been designed for live communications and, regrettably, this may become apparent all too quickly. Countermeasures are required in the form of new, efficient transport techniques facilitating online video services. MPEG-DASH is one of such modern techniques. But how good is this new technique really? This paper delves into the matter. The paper contains an analysis of the impact that the new technology exerts on the quality of video streaming over IP networks. It also describes a new numerical tool – QoSCalc (DASH-HTTP) which has been used to analyze MPEG-DASH under different use scenarios. The results are presented graphically and their interpretation is provided
Źródło:
Journal of Telecommunications and Information Technology; 2020, 1; 70-75
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A New Parameterized Model for Determining Quality of Online Video Service Using Modern H.265/HEVC and VP9 Codecs
Autorzy:
Uhl, Tadeus
Hoppe, Christian
Powiązania:
https://bibliotekanauki.pl/articles/1839313.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
H.265/HEVC
IP network
ITU-T
J.341
native RTP
QoS measurement techniques
video services
VP9
Opis:
This paper describes a new measurement method (VS model) for determining the quality of online video services relying on modern H.265/HEVC and VP9 codecs. The said method has been developed on the basis of VQuad-HD curves (according to ITU-T J.341). This model does not refer to signal analysis, but protocol analysis instead. The parameters used are: type of video codec, encoding rate, transport technique, packet loss and burst size. The method may be implemented quickly and easily, which is one of the great advantages when using this method to measure QoS.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 4; 72-78
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Suitability of Transport Techniques for Video Transmission in IP Networks
Autorzy:
Uhl, Tadeus
Klink, Janusz
Hoppe, Christian
Powiązania:
https://bibliotekanauki.pl/articles/226182.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
service quality
MPEG2-TS
MPEG-DASH
H.264
H.265
VP9
PEVQ
VQuad-HD
Opis:
The paper discusses the problem of video transmission in an IP network. The authors consider the ability of using the most popular video codecs that use both the MPEG2 Transport Stream and Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH). The main emphasis was given to ensuring the quality of service and quality assessment methods, taking into account not only the service- or network provider’s point of view but also the end user’s perspective. Two quality assessment approaches were presented, i.e. objective and subjective methods. The authors presented the results of the quality evaluation for H.264/MPEG-4, H.265/HEVC and VP9 codecs.The objective measurements, proved by statistic alanalysis of user opinion scores, confirmed the ability of using H.265 and VP9 codecs in both real time and streaming transmissions, while the quality of video streaming over HTTP with the H.264 codec proved inadequate. The authors also presented a connection between the dynamics of network bandwidth changing and MPEG-DASH mechanism operation and their influence on the quality experienced by users.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 1; 133-138
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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