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RTSP Inputs - CPU or GPU ?
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Streamevent  
#1 Posted : Sunday, July 23, 2017 9:45:37 AM(UTC)
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Hi everyone

I'm going to build a new PC for 12 RTSP 1080/30p inputs + some graphics + 7/24 streaming at 1080/30p

Does Vmix use the advantage of GPU rendering or will most work be done by the CPU?
If CPU power is more important, does Vmix support the 6 core AMD Ryzen CPU's?

Thx
Martin
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DWAM  
#2 Posted : Sunday, July 23, 2017 10:22:54 AM(UTC)
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Hi
Quote:
12 RTSP 1080/30p inputs + some graphics + 7/24 streaming at 1080/30p

Some users reported issues when using 7 or 8 RTSP inputs
It uses CPU mostly so you will need very powerful PC
Quote:
does Vmix support the 6 core AMD Ryzen CPU's?

Yes but Martin said it's not very good and introduce latency issues

If you really want to do this, you'd better wait next i9 with X299 mainboards or find a XEON based WKS with 16 or 20 cores

You won't be able to do this on a cheap solution

Guillaume
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mjgraves on 7/23/2017(UTC)
Streamevent  
#3 Posted : Sunday, July 23, 2017 11:46:01 AM(UTC)
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Thx Guillaume

At the moment I can run 10 Axis cameras 1080/25 in best quality settings without streaming between 28-45% CPU usage.
It depends on the lighting conditions and the settings ( Bitrate/GOP..)
System: 4770K and GTX650TI 32GB RAM

For streaming I could use a h.264 hardware encoder like this one. Hardware Encoder

The 7700K is not much faster that's why I thought a Ryzen could do a better job if Vmix takes more advantage of multi core processing than clock speed.
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mjgraves  
#4 Posted : Friday, July 28, 2017 10:50:57 AM(UTC)
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Curiously, I've used a hardware encoder like the one you cite as a way to collect a distant HDMI source. The model I use supports both H.264 & H.265. It works quite well.

I might have thought it better to use vMix as the encoder for the program output.
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