| Paper: | TP-L3.8 |
| Session: | H.264 Video Coding I |
| Time: | Tuesday, September 18, 17:10 - 17:30 |
| Presentation: |
Lecture
|
| Title: |
ROBUST LOW-DELAY VIDEO TRANSMISSION USING H.264/AVC REDUNDANT SLICES AND FLEXIBLE MACROBLOCK ORDERING |
| Authors: |
Pierpaolo Baccichet; Stanford University | | |
| | Shantanu Rane; Stanford University | | |
| | Antonio Chimienti; Consiglio Nazionale delle Ricerche | | |
| | Bernd Girod; Stanford University | | |
| Abstract: |
This paper proposes a scheme for low-delay robust transmission of video signals over packet erasure channels. In applications such as video conferencing, the permissible delay between encoding and playback may be too low to allow retransmission or channel coding which require buffering several video packets. For such a scenario, we present a scheme that provides robustness using redundant descriptions applied to certain portions of the video signal. In H.264/AVC, this can be efficiently implemented using redundant slices and flexible macroblock ordering (FMO). We describe a model that determines the bit rate of the redundant descriptions such that the expected distortion at the decoder is minimized. The average video quality delivered by our proposed scheme is observed to be higher than decoder-based error concealment and encoder-based loss-aware rate-distortion optimization. |
