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„Uni-TV“ Distributed TV Productions and Video-on-Demand Services at Universities.

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Presentation on theme: "„Uni-TV“ Distributed TV Productions and Video-on-Demand Services at Universities."— Presentation transcript:

1 „Uni-TV“ Distributed TV Productions and Video-on-Demand Services at Universities

2 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Outline introduction distributed production in studio quality distribution and access problems and experiences focus and future outlook

3 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Project Partners and Sponsor RRZE/University of Erlangen IRT/ Munich BR HFF TUM DFN

4 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Concept transmissions from the auditorium (Univ. Erlangen, Univ. Munich) to the IRT/Munich online editing at the studio/IRT according to the script provided by the HFF retransmission of the edited material to the auditorium for control and recording distribution over the internet/intranet offline editing for television broadcasting via satellite and cable

5 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Benefits reduced production costs material for universities / distant education promotional benefits for the universities educational television –Collegium Alexandrinum

6 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Production and Distribution equipment –video, audio, editing network servers accessibility and statistics

7 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Videoproduction cameras –(semi-) professional –general orientation codecs scanconverter for transparencies –alternating with camera monitors for quality control

8 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Audioproduction wireless speaker microphones codecs –embedded audio audio for directing and monitoring

9 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Studio for editing at the IRT online editing (MPEG-2 4:2:2) offline editing w/trailer, headers possibility for live broadcasting with BR

10 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Network Gigabit Testbed South/Berlin –3 x 2.5 Gbps ATM –3 channels –1 fiber pair University network in Erlangen city network (M‘net) in Munich

11 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Transmission Requirements cameras –3 x 50 Mbps CBR, VBRrt ATM camera for monitoring/directing –1 x 15 Mbps CBR, VBRrt ATM audio signals

12 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Distribution television (cable and satellite (Astra)) –fixed 30-minute time slot on the educational channel „BR-  “ as part of the series „Alpha Campus“ internet/intranet –individual download/streaming (MPEG-1, MPEG-2 4:2:0) –near-Video-On-Demand via IP/Mbone reservation (H.261)

13 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Bandwidth Requirements Distribution product after online-editing –1 x 50 Mbps product over the internet/intranet –15 Mbps MPEG-2 4:2:0 – 2 Mbps MPEG-1 product Near-VoD via IP/Mbone – 1 Mbps H.261

14 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Server server capacity at the IRT for editing –3 camera signals for editing (MPEG-2 4:2:2) with audio signals (3 hrs) –100 GigaByte per class server at the RRZE for Video-on-Demand –1.2 GigaByte per class (MPEG-2 4:2:0 broadcasting format) –400 MegaByte per class (MPEG-1)

15 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Distribution and Access www.uni-tv.net

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20 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Statistics March 2000 –2939 hits –2596 files –669 pageviews –704 sessions –61436840 Kbytes sent

21 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Problems and Solutions problems with equipment –codecs, camera settings, back-up team problems concerning the presentation –subject matters –speakers and their preferences –pointers

22 May 24th, 2000Susanne.Naegele-Jackson@rrze.uni-erlangen.de Current Focus and Future Outlook improved quality / fine-tuning improved accessibility/distribution indirect camera remote control VBRrt ATM PVCs latency of codecs regular classes for credits questions from the audience


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