TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Video Content-Based Bit Rate Estimation Scheme for Transcoding in IPTV Services |
| 영문제목(English Title) |
Video Content-Based Bit Rate Estimation Scheme for Transcoding in IPTV Services |
| 저자(Author) |
Hye Jeong Cho
Chae-Bong Sohn
Seoung-Jun Oh
|
| 원문수록처(Citation) |
VOL 08 NO. 03 PP. 1040 ~ 1057 (2014. 03) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
In this paper, a new bit rate estimation scheme is proposed to determine the bit rate for each subclass in an MPEG-2 TS to H.264/AVC transcoder after dividing an input MPEG-2 TS sequence into several subclasses. Video format transcoding in conventional IPTV and Smart TV services is a time-consuming process since the input sequence should be fully transcoded several times with different bit-rates to decide the bit-rate suitable for a service. The proposed scheme can automatically decide the bit-rate for the transcoded video sequence in those services which can be stored on a video streaming server as small as possible without losing any subject quality loss. In the proposed scheme, an input sequence to the transcoder is sub-classified by hierarchical clustering using a parameter value extracted from each frame. The candidate frames of each subclass are used to estimate the bit rate using a statistical analysis and a mathematical model. Experimental results show that the proposed scheme reduces the bit rate by, on an average approximately 52% in low-complexity video and 6% in high-complexity video with negligible degradation in subjective quality.
|
| 키워드(Keyword) |
IPTV
Smart TV
video transcoder
automatic bit rate estimation
QoE
candidate frame
hierarchical clustering
|
| 파일첨부 |
PDF 다운로드
|
