Advanced HD Conferencing Summary

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  • Advanced HD Conferencing Summary

    1. 1. <ul><li>Current </li></ul><ul><li>Advanced </li></ul><ul><li>Teleconferencing Solutions </li></ul><ul><li>Dan Sandin </li></ul><ul><li>EVL </li></ul><ul><li>Feb 7 2006 </li></ul>
    2. 2. HDV Teleconferencing <ul><li>Compression in camera </li></ul><ul><ul><li>Use widely deployed HDV format </li></ul></ul><ul><ul><li>1920 by 1080 I px but resolution < 1400 Bayer </li></ul></ul><ul><ul><li>1200 by 720 p has less latency </li></ul></ul><ul><ul><li>Inter-frame Mpeg compression </li></ul></ul><ul><li>Latency </li></ul><ul><ul><li>In practice > 2 sec round trip </li></ul></ul><ul><ul><li>Observed at evl > 4 sec with VLC <25 sec </li></ul></ul><ul><li>Bandwidth </li></ul><ul><ul><li>25Mbit each way with sound </li></ul></ul>
    3. 3. HDV Teleconferencing <ul><li>Current State </li></ul><ul><ul><li>VLC windows support </li></ul></ul><ul><ul><li>VLC Linux support ??? </li></ul></ul><ul><ul><li>SVC needs audio decode </li></ul></ul><ul><ul><ul><li>Robert Luc ?? </li></ul></ul></ul><ul><li>Disadvantages </li></ul><ul><ul><li>Huge latency > 2 sec round trip </li></ul></ul><ul><li>Advantages </li></ul><ul><ul><li>Nearly done, cheep, Linux </li></ul></ul>
    4. 4. DVCPRO HD Teleconferencing <ul><li>Compression in camera </li></ul><ul><ul><li>Will be widely deployed HDV format </li></ul></ul><ul><ul><li>1920 by 1080 px but resolution ~ 1600 Bayer </li></ul></ul><ul><ul><li>24p 30 i </li></ul></ul><ul><ul><li>AG-HVX200 P2 HD camera </li></ul></ul><ul><ul><li>intra-frame Jpeg compression </li></ul></ul><ul><ul><li>~ $6000 </li></ul></ul><ul><li>Latency </li></ul><ul><ul><li>In practice ?? </li></ul></ul><ul><li>Bandwidth </li></ul><ul><ul><li>100 Mbit each way with sound </li></ul></ul>
    5. 5. DVCPRO HD Teleconferencing <ul><li>Development </li></ul><ul><ul><li>Need to test latency and quality </li></ul></ul><ul><ul><li>Need to develop software decode </li></ul></ul><ul><ul><li>I meet with Panasonic feb 8 06 </li></ul></ul>
    6. 6. HDSDI Teleconferencing <ul><li>No compression 4-2-2 </li></ul><ul><ul><li>Use widely deployed HD format </li></ul></ul><ul><ul><li>1920 by 1080 x 30 hz Interlace </li></ul></ul><ul><li>Latency </li></ul><ul><ul><li>In theory < 250ms round trip </li></ul></ul><ul><ul><li>calit2 installation predicted to be ~ 260 - 400ms round trip </li></ul></ul><ul><ul><li>Needs to measured </li></ul></ul><ul><li>Bandwidth </li></ul><ul><ul><li>> 1.5 Gbit each way with sound </li></ul></ul><ul><ul><ul><li>Could modify software to truncate 10bit to 8 bit <1Gbit </li></ul></ul></ul>
    7. 7. HDSDI Teleconferencing <ul><li>Advantages </li></ul><ul><ul><li>Use widely deployed HD format </li></ul></ul><ul><ul><li>Standard broadcast equipment </li></ul></ul><ul><ul><li>Potentially low latency </li></ul></ul><ul><ul><li>Best quality of currently contemplated systems </li></ul></ul><ul><li>Disadvantages </li></ul><ul><ul><li>Lots of unnecessary bandwidth </li></ul></ul><ul><ul><li>Needs frame grabber (SDI) </li></ul></ul><ul><ul><li>Expensive to do at full rez ( with display) </li></ul></ul><ul><ul><ul><li>$24,000 gets you ~ 1400 lines </li></ul></ul></ul><ul><ul><ul><li>$64,000 gets you full 1920 lines </li></ul></ul></ul>
    8. 8. HDSDI Teleconferencing <ul><li>Development at evl </li></ul><ul><ul><li>Will purchase equipment in next weeks. </li></ul></ul><ul><ul><li>Two windows computers </li></ul></ul><ul><li>Transmit </li></ul><ul><ul><li>HD10 Analog to HDSDI converter Analoge component to HDSDI SMPTE-292 </li></ul></ul><ul><ul><ul><li>$1,200 </li></ul></ul></ul><ul><ul><li>Black Magic DeckLink HD Pro 4:2:2 for HDSDI to framebuffer </li></ul></ul><ul><ul><ul><li>$ 1,500 http://www.blackmagic-design.com/products/hd / </li></ul></ul></ul><ul><ul><li>Software that packet smpte-292 (need to find out standard?) </li></ul></ul>
    9. 9. HDSDI Teleconferencing <ul><li>Receive </li></ul><ul><ul><li>De-packet software to frame buffer </li></ul></ul><ul><ul><li>AJA Xena HS for framebuffer to HDSDI </li></ul></ul><ul><ul><ul><li>$ 1,800 http://www. aja . com/products_xena .html </li></ul></ul></ul><ul><ul><li>Some HDSDI to DVI or component box to get to display </li></ul></ul><ul><ul><li>Other groups have frame buffer to computer display software that may be compatible? </li></ul></ul>
    10. 10. HDSDI Teleconferencing <ul><li>Development at evl </li></ul><ul><ul><li>I imagine these HDSDI to frame buffer and frame buffer to HDSDI do not have Linux drivers. </li></ul></ul><ul><ul><li>Packetized smpte 292 should not be hard to decode and display </li></ul></ul><ul><ul><li>We could use taravision boards to transmit in Linux. </li></ul></ul>
    11. 11. HDSDI Teleconferencing <ul><li>Development at evl, How do we fit in </li></ul><ul><ul><li>Copy UW system and leave it independent </li></ul></ul><ul><ul><li>Linux receive network hd, display on sage </li></ul></ul><ul><ul><li>Jpeg or jpeg 2000 compression </li></ul></ul><ul><ul><ul><li>Use hardware acceleration </li></ul></ul></ul>
    12. 12. Varrier stereo Teleconferencing
    13. 13. Varrier stereo Teleconferencing <ul><li>No Compression </li></ul><ul><ul><li>Yuv 4-1-1 </li></ul></ul><ul><ul><li>640 480 by 30fps x 2 P </li></ul></ul><ul><ul><li>Compression possible </li></ul></ul><ul><ul><li>Small c mount cameras </li></ul></ul><ul><ul><ul><li>unibran Fire-i400™ </li></ul></ul></ul><ul><ul><ul><li>~$500 each with lens </li></ul></ul></ul><ul><li>Latency </li></ul><ul><ul><li>In theory < 250ms round trip </li></ul></ul><ul><ul><li>In practice 330 ms round trip </li></ul></ul><ul><li>Bandwidth </li></ul><ul><ul><li>220Mb with sound each way </li></ul></ul>
    14. 14. Varrier stereo Teleconferencing <ul><li>Advantages </li></ul><ul><ul><li>Stereo without glasses </li></ul></ul><ul><ul><li>Better than NTSC, great looking, life size images </li></ul></ul><ul><ul><li>Compression possible </li></ul></ul><ul><ul><li>EVL developed software environment with deep control </li></ul></ul><ul><ul><li>Computer interface 1394 </li></ul></ul><ul><li>Latency </li></ul><ul><ul><li>Good 330 ms </li></ul></ul><ul><ul><li>Can be made smaller goal is 200ms round trip </li></ul></ul><ul><li>Bandwidth </li></ul><ul><ul><li>220Mb with sound each way </li></ul></ul><ul><ul><li>Modest , can be made smaller </li></ul></ul>
    15. 15. Varrier stereo Teleconferencing <ul><li>Development </li></ul><ul><ul><li>Currently deployable </li></ul></ul><ul><ul><li>Add compression </li></ul></ul><ul><ul><li>in process </li></ul></ul><ul><ul><ul><li>Recording playback combining with VR compression </li></ul></ul></ul><ul><ul><ul><li>More video formats </li></ul></ul></ul>
    16. 16. Varrier stereo Teleconferencing <ul><li>Development </li></ul><ul><ul><li>Currently deployable </li></ul></ul><ul><ul><li>Add compression </li></ul></ul><ul><ul><li>in process </li></ul></ul><ul><ul><ul><li>Recording playback combining with VR compression </li></ul></ul></ul><ul><ul><ul><li>More video formats </li></ul></ul></ul><ul><ul><li>Possible connection Use NVIDIA texture decompression for media file playback on SAGE SHD and bigger. 8 to 1 compression </li></ul></ul>
    17. 17. Varrier stereo Teleconferencing <ul><li>Development </li></ul><ul><ul><li>Opportunities for more interoperation of varrier and SAGE </li></ul></ul>
    18. 18. GigE camera Teleconferencing <ul><li>GigE industrial camera </li></ul><ul><ul><li>1920 by 1080 by 30hz P by 12bits/component </li></ul></ul><ul><ul><li>Bayer pattern color so rez is about 2/3?? </li></ul></ul>
    19. 19. GigE camera Teleconferencing <ul><li>GigE industrial camera </li></ul><ul><ul><li>1920 by 1080 by 30hz P by 12bits/component </li></ul></ul><ul><ul><li>Bayer pattern color so rez is lower than a 3 chip camera </li></ul></ul><ul><ul><li>Compression possible </li></ul></ul><ul><ul><li>Small c mount cameras ~$5000 each </li></ul></ul><ul><li>Latency </li></ul><ul><ul><li>rough measurement < 400 ms round trip </li></ul></ul><ul><ul><li>In practice need to measure round trip </li></ul></ul><ul><li>Bandwidth </li></ul><ul><ul><li>~800 Mb with out sound each way </li></ul></ul>
    20. 20. GigE camera Teleconferencing <ul><li>Development at evl </li></ul><ul><ul><li>Windows demonstrated </li></ul></ul><ul><ul><li>Linux driver problems </li></ul></ul><ul><ul><li>Write our own drivers for Linux </li></ul></ul><ul><ul><li>Use windows drivers </li></ul></ul><ul><ul><li>Windows send Linux receive. </li></ul></ul><ul><ul><ul><li>Add compression </li></ul></ul></ul>
    21. 21. Teleconferencing <ul><li>discussion </li></ul>

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