Let me start by saying my knowledge base on this topic is zip.
Background. We are trying to set up a one-way TV transmission across a 5.8 link, two kilometers, for a cancer charity run Sunday Oct 6th. The ham with the professional grade video camera is using NDI and I can "see" the transmission when I connect my laptop via Ethernet cable to his to the MikroTik hAP ac3 Wireless Dual-Band Router with external MIMO flat panel antenna. Identical receiving unit. The intention is to set up a TV display at the Start/finish line showing the participants arriving at the turn-around point.
Problem: The two guru's have been unable to route the signal across the link and produce a video picture at the receiving end.
Ask: Does anyone have a software solution for receiving a one way video transmission across an AREDN link?
Ian VA3QT
va3qt4@gmail.com
705-302-4321
Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer
Yes, now 4 days to go with this experiment. My hidden agenda is to generate some interest amongst a group of old farts for the eventual purpose of creating AREDN links between existing but tunneled locations.
We have the link equipment. Path distance is 981.30 m (3,219.50 ft). We will set up Thur evening to confirm link operation.
Can U recommend a video codec to use and an alternate one?
Ian
There is a video camera. OK. You mention it has NDI output. I've never heard of NDI and I've done a lot of video. Most pro video is H.264 or H.265 and comes over HDMI. NDI looks like a new service some company cooked up. Are you seeing the video when you are plugged into the switch using a web browser? Using VLC player? Using some sort of "NDI viewer"?
For anything to work the video has to be converted into a streaming compatible codec, and a compatible decoder on the other side. Most folks use either html based viewers which can stream mpeg, if you are using VLC you can stream using other codecs. You have to know what the camera is giving you and adapt to that. RTSP streaming protocol (what security cameras usually use) is most often possible, but that might requre you take HDMI out of the camera and go into another encoder. Or does the NDI provide RTSP? I don't know, only saw it online after reading your posts.
Most folks who want video over mesh use a very simple security type camera not a professional camera. The key to getting this to work might be getting rid of the super good camera and using something lesser.
Ed
PS added 10/3
"NDI is an easy way to send and receive high quality, low latency video and audio between supported devices using a standard Gigabit enabled network."
No matter all the above ... nothing in the AREDN network will be Gigabit speed. Stop trying to use such a fancy camera and instead use something like this
https://www.amazon.com/Security-Detection-Assistant-Recording-RLC-510A/d...
That depends on the camera.
Are you really intending to use a television camera as opposed to a (cheap < 100USD) surveillance camera.
I have three outdoor home surveillance cameras (purchased from Walmart) available 24/7/365 published via the AREDN World Map network.
(Also available via internet)
I am running 2 frames per second, so it may be possible for many to view.
If you use a direct AREDN link, it is likely that a higher frame rate is possible.
73, Chuck