Here is a short video demonstrating what we intend to do next week: https://youtu.be/ybazWEEjvhM. This first step is only a conceptual test using a local fibre loop (20 cm).

In short our plan is to live stream a conference in Kista (sub city of Stockholm). On site we will run vMix 17 with three cameras, power point integration and stream live.

The Output will be fed via NDI over Stokab's fibre network and received in our studio WeStudioU downtown Stockholm (approx 10 km bird distance).

In the studio we have sign interpreters who will be chroma keyed onto a second live stream for the deaf and hard of hearing audience.

The sign interpeters will also be chroma keyed onto a neutral background, which will be sent back over NDI (External2) to Kista. Our production unit in Kista will then Fullscreen that to one of the stage projectors. Thus offering sign interpretation for the audience in the aula.

Next step is test between Kista and our studio.
I'll keep you posted :)

(To be on the safe side this will only be a 720p50 production)

Good setup Richard. Looks like fun.

Tested and prepared, will (hopefully) work.

Sorry for using Google translation of below (have not time for proper translation right now, will do later)

Web broadcasts can be viewed via the links:
Original Production: http://video.stockholm.se/live/13325314
Sign Language Interpreted: http://video.stockholm.se/live/13325331

World premiere of video feeds using new IP technology over city fiber

Thursday, April 28, 2016 between 10:00 and 13:00 (CEST, check your local time) we will test NDI, a completely new technology for real-time transmission of HD video over IP networks. It will be the first time in the world that a test carried out in this way. In Kista Nod auditorium web streamed an anniversary seminar with three cameras and PowerPoint integration in the usual way via RTMP (webcast).

Speakers include Swedish Minister of Industry Mikael Damberg, Finance Commissioner Karin Wanngård, Ericsson's research director Sara Mazur and Interactive Institute Swedish ICT's CEO Anette Novak. More about the seminar at: http://kista.com/about/kista-interacts/anmalan/

Via 19 km fiber cable is output through the NDI received without delay in a studio in central Stockholm. From there RTMP streaming also available production by adding sign language interpretation of chroma keyteknik. Sign language interpretation is sent in turn by NDI back to Kista Nod and projected there on the big screen.

NDI technology has recently been launched on a broad front in conjunction with the NAB show in Las Vegas. The idea to conduct the test was born just a few weeks ago. A few intense days of planning, ensuring the fiber connection and testing have resulted in that we dare try. Now only the exciting live operation.


innovative players
It is WestreamU AB Stokab, Kista Science City and Interpretation Centre Örebro County Council who together perform the test.

WestreamU AB stands for the idea and concept, NDI transfer and productions of the webcast in Kista Nod and sign language interpretation in their studio on Rådmansgatan in Stockholm.

WestreamU helps companies, governments and organizations to quickly create smart video documentation in the form of stylish, vibrant and engaging live produced Web TV at an affordable price. Recording with immediate delivery is always included. The company belongs to the leading suppliers of available live broadcasts. That is, with live subtitling, sign language and audio description.

Stokab, Stockholm's IT infrastructure company with fiber connections open to all, stands for fiber connection between Kista Nod and Rådmansgatan. Stokab's mission is to provide a competitively neutral IT infrastructure in the Stockholm region to create competition, diversity, choice and minimize the digging of the city. Stokab, owned by the City of Stockholm, has the world's largest open fiber network, covering 100 percent of Stockholm's commercial real estate, and nearly 90 percent of all households.

Kista Science City AB (KSCAB) is organizing the anniversary seminar in Kista Nod on the occasion of the Electrum Foundation was formed 30 years ago with the idea that academia, industry and the public sector together would take the Swedish telecommunications industry and the coffin into the future.
KSCAB strive to make Kista Science City into a place where people and businesses can develop together. The focus is to encourage strong partnerships between business, academia and the public sector to generate growth in the region.

Interpretation Centre Örebro County Council provides interpreter services. Their users are mostly sign language. The business caters primarily to people with deafness, deaf-blindness or hearing impairment. Interpretation Centre also offers interpretation via Taltjänst to persons with disabilities related to speech, voice or language. They have also been developing innovative solutions for the television broadcast regularly used, for example, by TV4.

HD VIDEO OVER DISTANCE WITHOUT DELAY
Live Production with several cameras require signal transmission without delay. Therefore, it has long been mainly used cables with point-to-point transmission. That is a cable from each source (camera) to the receiver (video mixer). Until recently, transferring video with HD quality over the Internet led to the delay in seconds and up.

The company NewTek launched in March 2016 Network Device Interface (NDI), a technology that enables IP-based workflows for live production of video over Ethernet. NDI is available in the form of open specifications, and software development kit (SDK), but royalties for all who wish to support workflows via the IP in their networks, production equipment and other systems. Other solutions for IP-based production flows already exist. However, the technical conditions, and relatively high costs, meant that only large production companies have been able to use them.
For more information, see http://newtek.com/ndi

During the test, live production software vmix, and then a couple of weeks supports NDI. Fibre The connection means in principle that all video signals coming in / out of WestreamUs equipment in Kista Nod are available without delay even in the studio equipment at Rådmansgatan. As vice versa.
For more information, see http://www.vmix.com/

TV PRODUCTION democratized
With the help of NDI, one can send video streams and control signals over data networks and the Internet with negligible delay. This makes TV production from geographically diverse locations, cost and technical, available to everyone - not just the big TV companies. One can say that the TV production democratized further.

Since each video stream by NDI in terms of capacity needs around 100 Mbit / s, is a prerequisite that there are networks with Gigabit capacity. Ideally then with fiber connections between the respective production site. In Stockholm, and large parts of Sweden, this is no problem when the fiber networks are well developed.

The next step is to conduct similar productions, though over the internet with the VPN tunnel between the sites. Then you do not fiber connection all the way.

CONTACT
Richard Gatarski, founder of WestreamU AB: + 4670-8802627, richard.gatarski@westreamu.se
http://westreamu.se

Anders Broberg, Communications Stokab: + 4676-1230218, anders.broberg@stokab.se
https://stokab.se/

Åke Lindström, ICT Manager Kista Science City: + 4670-5851574, ake.lindstrom@kista.com
http://kista.com

Johnny Kristensen, business developer Örebro County Council: +46 70-319 4509, johnny.kristensen@regionorebrolan.se
https://www.regionorebrolan.se/tolkcentralen

Awesome use of the technology Richard!
Congratulations, I look forward to seeing your published documentation about it.


Ice

So, here is the documentation of how we did it.

Stefan,
I think the answers are in the video. In any case,

The fiber was a dedicated connection between the event in Kista and our studio. If one signs up for such a link for 1-2 years, the cost is about 150 Euro/month. It sort of just extended our LAN. And as Anders say towards of the end of the documentary, there are about 3 500 connection points (free) for Stockholm's own schools, sport arenas, and organizations.

From the studio we sent two streams (original+signed) over our "normal" 100/100 ISP, to the TwentyThree CDN (Stockholm uses them). Don't have any viewer stats (does not matter for our test).

We did not send back the live stream to the Kista Nod, just the sign interpreters for IMAG in Kista.