Goal: Development and contributions to the standardization process of an efficient transmission system for TV on mobile terminals.
The further development from DVB-T to DVB-H and DAB to DMB has made the launching of TV services for mobile terminals possible as a result of the improved transmission quality and the reduced receiver power consumption. For both systems (DVB-H and DMB) H.264/MPEG4-AVC has been specified as the mandatory video coding standard. Therefore real-time solutions for H.264/MPEG4-AVC encoding/decoding for DVB-H and DMB have been developed by the Image Communication Group.
Real time decoders for H.264/MPEG4-AVC, Baseline Profile Level 1.2 (CIF), and AAC+ have been ported to embedded PDA platforms. Furthermore a real time encoder with a streaming server was developed for a PC based platform. This live streaming server was presented at the CeBit 2005. A pre-version of the system was presented at the NAB 2004 and IBC 2004, where the reception of pre-encoded H.264/MPEG4-AVC bit streams via a DVB-T channel by a PDA with DVB receiver equipment was presented. A presentation of a complete DVB-H transmission system is planned for the IFA 2005. Furthermore the H.264/MPEG4-AVC live streaming server is currently extended to a multi channel encoding system with statistical multiplex features and will also be presented at the IFA 2005.
Thomas Wiegand coordinates the work of audio/video coding in DVB TM-CBMS (responsible for IP datacast over DVB-H) and is the editor of the DVB-H specific Annex to TS 102 005 that specifies how H.264/MPEG4-AVC is carried over DVB-H networks.
Publications in Conference Proceedings
2006
- Thomas Schierl, Cornelius Hellege, and Thomas Wiegand:
Techniques for Wireless Broadcasting using Scalable Video Coding,
2nd International Mobile Multimedia Communications Conference (MobiMedia'06), Aleghero, Sardinia, Italy, September 2006, Invited Paper.
2005
- Thomas Schierl, Heiko Schwarz, Detlev Marpe, and Thomas Wiegand:
Wireless Broadcasting Using the Scalable Extension of H.264/AVC,
IEEE International Conference on Multimedia and Expo (ICME'05), Amsterdam, The Netherlands, July 2005.
Exhibitions
2005
- Thomas Wiegand and Thomas Schierl:
DVB-H Live Streaming Server,
CeBIT 2005, Hannover, Germany, March 2005.
2004
- Thomas Wiegand and Thomas Schierl:
H.264/AVC & Streaming Technologies for DVB-H,
International Broadcast Convention (IBC'04), Amsterdam, Netherlands, September 2004.
- Thomas Wiegand and Thomas Schierl:
H.264/AVC Datacasting over DVB-T- according to DVB-H,
National Association of Broadcasters Exhibition (NAB'04), Las Vegas, USA, April 2004.