Latency for AV.io 4K and AV.io HD


#1

What are the latency specs for AV.io 4K and AV.io HD. The former mentions ultra low latency in its product description page but the latter doesn’t?

We are dealing with a tight latency budget for 1080p30fps HDMI capture, so would be great to get actual #s for both so we can purchase the right product for our use.

Thanks in advance.

Vineet


#2

The hardware latency of the AV.io series is approximately 2 frames. Typically that’s somewhere in the ballpark of 66ms. The software you’re using and even the display you’re connected to will also increase the potential latency.


#3

Thanks!

Is that statement true for both AV.io 4k as well as HD?

Vineet


#4

Yes it’s the same, though there will be minor variations in recorded latency unless you have a very sophisticated setup for testing such things.


#5

One last question - Will the latency at the adapter increase if we capture at a downsampled rate (e.g., source is transmitting at 1080p60fps and we capture at 1080p30fps via AV.io 4K or AV.io HD ) to allow for real-time processing by our application.

Thanks!


#6

Once the data has left the AV.io any extra latency incurred is a direct result of your unique system setup and capture software. Capturing at a different frame rate than the source won’t affect the latency of the AV.io. Basically there is a 2 frame hardware buffer and after that the AV.io sends data as fast as it can. There should however be a reduction in latency from using a 60fps source as opposed to a 30fps source.