Title :
Gradual tune-in pictures for fast channel change
Author :
Jennehag, Ulf ; Döhla, Stefan ; Fuchs, Harald ; Thoma, Herbert
Author_Institution :
Fraunhofer IIS Erlangen, Erlangen, Germany
Abstract :
This paper presents a novel approach for fast channel change based on tune-in streams. The presented solution is based on gradual decoder refresh (GDR) with H.264 for the main and for the tune-in stream. In normal GDR mode a receiver would have to wait for several received NAL units of multiple frames before it can render a complete frame without visible GDR artifacts. We propose an additional tune-in stream that fills the missing regions of a partially complete frame. Our simulation results show that the solution is at least as bitrate-efficient as previous tune-in solutions but offers the advantages of a bitstream with less variable bitrate and a consistent gradual improvement of picture quality.
Keywords :
video coding; video streaming; fast channel change; gradual decoder refresh; gradual tune-in picture; picture quality; tune-in solution; tune-in stream; Bit rate; Decoding; Encoding; IPTV; PSNR; Streaming media; Video coding;
Conference_Titel :
Consumer Communications and Networking Conference (CCNC), 2011 IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-8789-9
DOI :
10.1109/CCNC.2011.5766595