i don't have any experiences with hdmi wireless transmitters, but does it have to be wirelles otherwise you could buy a hdmi to cat extender. So you can run a lot of cable. This is cheaper than transmitting wireless and maybe has more range

i have good results with the nyrius, but as stated before, you have to keep a clear line of sight. i lost the sognal at the end of a recording when all people got up at once. so i keep both sender and receiver at a hight and also have plans for a simple dish to put behind the sender or receiver.

more than 30 meters direct and clear line of sight is the minimum and i also only use it on a b cam. critical and more permanent use i do with sdi.

stefan

could work! just test the system with the receiver placed central over the fieldobove the glidecam and connect it to a hdmi to sdi box and get the signal to whereever you are recording / mixing.

just make sure there is no obstruction between antenna and receiver and that you are able to reset the camera and receiver units (remote power off/on). a nyrius takes standard 5v usb power so you have lots of power options.

you could start testing woth a more simple approach and see what the results are. the nyrius will go for about $250 so its not a big risk.
stefan

Hi Stefan

My favorite so far ist this product:

http://www.tnpbroadcast....s-hd-pro-hdmi-100m-p5972

With approx. 100m and 1500 USD a good price!


But you are right I will test the nyrius with approx. 50m by open space (clear line of sight):

http://nyrius.com/produc...ptops_NPCS550.eng-4.html

Feedbacks from :
http://www.bhphotovideo....ies_pro_wireless_hd.html

confirm my decision :-).

I tell you the results asap...

Regards

Patrick

hi Patrick,
nice garden...;-)

see what you mean. i use the nyrius in a fixed setup. keeping a clear and steady line of sight. i think because you walk around maybe you obstruct the signal somehow.

how did you put the sender and receiver... can you show us your setup.

in fixed setup and indoors ( outside in the open, i guess signal strength is weaker ) all is well if you keep a close watch on the limitations.

as mentioned before, there must be easy tricks to boost signal strength or boosting reception ... youtube has a number of good examples of the nyrius and others...
stefan

Have you tried the Teradek Bolt? The HDMI low-end version is around $1,500. I've used them for sports production with good results.

Hi Richard

Do you know what I forgot to check wich bitrate I chosed :-( . This could be a reason for the artifacts.

I see you have experience in youtube live stream. The process for a live stream over youtube understand I with this steps:

- Camera 1080 -> Vmix
- Vmix with 720 Bitrate 1800 -> upload to youtube

Do you mean that the live program on youtube is better than the saved program after the live session?

Regards

Patrick

No, I mean that the local vMix recording is typically better than what you stream. For 720p the general recommendation is 2.5 Mbps when streaming (using h.264 mp4). Compare that with that a reasonable quality for local mp4 recording is 8 Mbps (and much more is actually better, but generates large files).

YouTube saves the recording of the stream you send to them. So the quality of their recording depends on what streaming quality you set, and how good your internet uplink is (eg for a 2.5 Mbps stream you should have at least 5 Mbps upstream internet dedicated to you - not shared with others).

I have three Nyrius Pros (and a few other similar, but bulkier, brands) and is very happy with them. The Teradek Bolt, and Radian HD Wireless transmitter are perhaps somewhat better more reliable, but does not motivate the price difference for me.

Connect your Nyrius Pro into an Input in vMix, and on that input click the Preview icon (left of the cog wheel), which will give you an almost full view of the Input on the Screen. Then walk around with your camera and see how it looks like on the screen, and how far you can move. That will give you a pretty good impression of how the wireless works. Then change the connection to an HDMI cable and compare. This way you eliminates the recording/streaming quality issues.

The quality of the recording and the stream then depends on what qualities you set. Martin usually recommends MPEG-2 TS 50 Mbps for full HD recordings, which creates a huge file if the recording is long. (Hence we stay with 8 Mbps mp4). One alternative, still huge files, is to record externally to an Atomos Ninja or similar (eq Blackmagic's Hyperdeck).

All this are simplifications of the actually complex world of video formats, resolutions, and frame rates. And of course hardware things in the camera and video input/output cards matter too.

Hallo Karsten

Thanks for posting.

Which bitrate and pixelrate do you prefer for your live stream?

Patrick