Any plans on integrating NDI|HX ?

Studio Operators Composer

 

Hi Folks.

Are there any plans to add NDI|HX as an output option to Aximmetry? 

In certain situations the much smaller bandwith of HX outsmarts the 'uncompressed' standard NDI.

Cheers & all the best.

Eric.


   EricWest

 
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TwentyStudios
9/28/2022 7:32:50 PM
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NDI HX encoding typically isn’t featured in any software integrations with NDI. This format is mostly used in hardware encoding, with software support for decoding. I think it’s a licensing thing, but I’m not sure. Also, standard NDI is far from uncompressed. It’s very easy to see compression artifacts and NDI isn’t suitable for keying. 

 
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ericmarodon
9/28/2022 8:16:41 PM
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@twentyStudios: Have you tried keying full NDI?

Is it really bad or is it simply because most NDI cameras have been usually cheap ones with NDI/HX ?

On paper NDI is supposed to be able to output up to 16bit per pixel, and I've read that Birddog for instance manages to send 10 bit 4:2:2 cameras on their 4 line of cameras, which on paper sounds fit for chromakeying. And with embedded FreeD soon, it was looking tempting.

 
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TwentyStudios
9/29/2022 5:32:09 AM
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I’ve tried keying with Full NDI and there’s definitely a visible degradation compared to SDI. 10bit 4:2:2 doesn’t tell the whole story either. Full NDI is still heavily compressed, and if you do 10bit 4:2:2 it will need to compress the signal even more, removing some of the quality you’ve gained from the higher color resolution and bit depth. I’ve done some tests in the studio with Birddog encoders, and with a real-life complex signal the image quality was actually worse with 10bit and 4:2:2. I suspect this issue is even worse on noisy PTZ cameras like the BirdDog. In short, what might normally pass the quality bar will quickly fall apart when doing chroma key. 

 
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EricWest
9/29/2022 6:02:24 AM
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Hi there.

Thanks for your comments and suggestions!
In fact I don't have any intention to pull a key from NDI|HX. (Life is painful enough, no need for crappy keys... :-))
n this case it's about sending HX *out* of Aximmetry to other devices, which would benefit from the lower bandwidth.


 
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TwentyStudios
9/29/2022 6:12:39 AM
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@EricWest: I agree that it would be a useful addition. I just think there are licensing costs around integrating HX encoding in software.

 
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Eifert@Aximmetry
10/3/2022 11:53:53 AM
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Hi Eric,

You could use NDI Tools's Bridge app to convert all your live NDI outputs locally.
You can download NDI Tools from here: https://www.ndi.tv/tools/

Then launch Bridge from the NDI Tools:

And select local. Also, don't forget to check the compatibility of your system:

Warmest regards,