Aja U-TAP gives me 4 to 5 frames delay (0.16-0.2 of a second). Taking photos i admit that i get 4 frames delay more often, so delay is around 0.17 of a second.
Blackmagic gives 1 to 2 frames of delay (0.04-0.08 s). Most of a time 2 frames, so delay is around 0.07 sec.
So, Blackmagic gives 2,25x times less delay.
It was a direct link from pc to pc via a cat6 cable. Gigabit connection on my Blade, I'm not sure about the NIC on my HP, I Just got a Blade back from tour, so I can try to re-do this from Blade to Blade in a week or so when things slow down.Oaktown wrote:Dinga, what kind of network were you using when you did your NDI testing? Was it a dedicated 1G wired network?
May be slightly more accurate if those tests are done at 50 or 60 FPS. Gives a little more resolution in your ms, as i suspect both devices have less latency in ms.Warspite wrote:Tested Blackmagic and Aja U-Tap with Resolume 6.
Source - Macbook HDMI Out at 720p50, receiver - X99 based Rack PC.
Built into resolume 5 test card with 25 fps timecode
Aja U-Tap - 1-2 frames delay at 25 fps (around 60ms).
Blackmagic Mini Recorder HDMI input - 2-3 frames delay at 25 fps (around 100ms).
Blackmagic Mini Recorder SDI input with Decimator HDMI to SDI converter - 2-3 frames delay at 25 fps (around 100ms). So Decimator SDI-HDMI converter does not add any latency.
Blackmagic Decklink Duo 2 SDI input with Decimator HDMI to SDI converter - 2 frames delay (around 80ms).
So Aja is now even better than Blackmagic. What a twist! Bravo Resolume Team!
But also Blackmagic is 1 frame behind to my previous tests. Just wander if this change is up to new version of Blackmagic Desktop Video Software or because of Resolume 6.