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10demo.ppt

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Transcript

  • 1. Internet Protocol TV Next Generation Set-Top Box Proof-of-Concept Hugo Kwok David Shen Jimmy Jeong Allen Lai Group 10
  • 2. Agenda  Background  Objective  System Overview  Challenges  Future Developments  Conclusion  Demo  Questions?
  • 3. Background  Currently, the TV market is dominated by cable and satellite providers  IPTV is a new technology where users are able to view TV contents over the internet.  IPTV is already available in certain cities  (e.g. TELUS, AT&T)
  • 4. Background (continued)  Two segments  Live broadcasts  Stored broadcasts or Video On Demand (VOD)  Users stream contents after they are downloaded (e.g. to a hard drive)  Can be easily integrated into the household  Internet connection
  • 5. IPTV – Graphical Representation
  • 6. Objective  Standardized set top box compatible for multiple service providers  Display internet media streams on a standard television set with-out using a PC  Proof-of-concept to commercialization
  • 7. Proof of Concept  Stream real time Real Media file from a remote server on the Internet via RTSP  Convert Real Media file through decode/encode algorithms into MPEG4 format  Play resulting audio/video with Media Player (MPlayer) on a Linux development platform via an attached LCD screen on the development board
  • 8. Equipment  TI DaVinci System-on-Chip  Dual-core with ARM9 and C6000 DSP CPU  LCD screen output  Internet connection  Helix Server  Simulates online media streaming from a local directory
  • 9. System Flow Diagram Y Reading from local In MPEG4 and Store on Local Media/ Streaming N Decode Block Display MP2 format? Memory? Media N Y Y Store on Local Play from local Conversion Bloxk Media Storage? N
  • 10. Why MPEG4?  The set-top box shall stream various media format and convert it into MPEG4 video and MP2 audio format for storage and display due to the following reasons  Easy to manage  High compression ratio  Further software development focused on MPEG4 format media file
  • 11. Why MPlayer?  Physical media  CDs, DVDs, Video CDs  Container formats  3gp, AVI, ASF, FLV, Matroska, MOV (QuickTime), MP4, NUT, Ogg, OGM, RealMedia  Video codecs  Cinepak, DV, H.263, H.264/MPEG-4 AVC, HuffYUV, Indeo, MJPEG, MPEG-1, MPEG-2, MPEG-4 Part 2, RealVideo, Sorenson, Theora, WMV  Audio codecs  AAC, AC3, ALAC, AMR, FLAC, MP3, RealAudio, Shorten, Speex, Vorbis, WMA
  • 12. MPlayer (continued) Streaming/Media Demux Decode Video/Audio Driver Display On Local Storage  Large selection of supported media formats  Open source software
  • 13. MEncoder Save on Memory Streaming Demux Decode Encode Location  Transcoder with MPlayer bundle  Converts wide range of multimedia files to a specific file format  Able to save a video and audio stream separately onto a memory location for post processing
  • 14. MEncoder (continued)  In the proof of concept device, the real media video will be developed such that the set-top box can stream media content in RM format  Codec developed based on the source code of RV30 from the Helix Community
  • 15. Transcoding – High Level Internet RTSP RealMedia Demuxer RealAudio RealVideo Audio Decoder Video Decoder RAW RAW Audio Encoder Video Encoder MP2 MPEG Audio Decoder Video Decoder RAW RAW Audio Driver Video Driver (no mux) On Screen Display
  • 16. Transcoding – Conversion Block N Y Encode RAW Fill buffer with RAW Video Buffer Full Flag Y Video Data to N encoded Video Ready? Set? MPEG4 format Data Set Buffer Full Y Buffer Full? Flag N Reduce Frame Set Buffer Level Buffer Level < Y Rate Per Second Low Flag Requirement? N Go to Decode Block and delete data from buffer
  • 17. Problems Encountered  Setting up development platform and OS  Researching and understanding the technical backgrounds  Understanding source code  Obtaining Real Media Source Code  Not open source like other codecs (only binary files available)  Requires license from Helix Community  Not successful in compiling
  • 18. Problems Encountered  Cross-compiling RealPlayer source code for the ARM  Attempted to understand header files of codecs suggested by Dr. Bajic  Tried different binary files of real video codecs  RealMedia codec in binary form for Palm, which ran on ARM processor  Extracted files were not compatible
  • 19. Future Developments  Implement streaming of all other input media formats, convert and output to one universal format  e.g. Windows Media, VLC, etc.  MPEG 4  Migrating system from ARM CPU to C6000 Digital Signal Processing CPU for more efficient processing and algorithmic calculations  Developing a GUI  Integrate proof of concept and commercialize it in set top box
  • 20. Budget Equipment Estimated Cost TI DaVinci System-on-Chip Provided Development Board Software: OpenSuse Linux, Open sources MPlayer/MEncoder, Eclipse IDE, Helix Server, Various Source Codes Total $0
  • 21. Lessons Learned  Team Dynamics  Problem Solving  Project Planning  Time Management  Challenges in Integration
  • 22. Acknowledgements  Dr. Farid Azhar for his support  Dr. Ivan Bajic for his advice  Dr. Lucky One for insights and providing us with lab access and equipment  Mr. Steve Whitmore for overseeing the project and advic e guidance
  • 23. Demonstration
  • 24. Questions / Answers