Hi,

Your computer build looks good. Note that we have hardware recommendations available here: https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/supported-hardware/pc/system-requirements-for-workstations/

Make sure that the motherboard you choose can handle the capture card you intend to buy. Since you didn't provide the motherboard and capture card models, we cannot confirm compatibility.

Warmest regards,

Hello dear

Thanks for your reply

The capture card we have is there: https://www.blackmagicdesign.com/fr/products/decklink/techspecs/W-DLK-36

Thanks again

Note that you cannot output more than one camera angle at a time from Aximmetry when using UE5 as the rendering engine. You can switch between cameras in Aximmetry so it does support more than one inputs, but if you’re planning on using an external video switcher you need to get one workstation per camera.

I also recommend getting a better GPU than the 4070. At least a 4080 but preferably a 4090.

Hello dear @TwentyStudios

So is it possible to NOT use UE5 as rendering Machine? knowing that for now we can not afford more than 1 workstation.
Is it possible to have only 1 workstation and output 3 cameras?

USe case 1:

- Input: 3 Cameras
- Tracked Camera: 0 or 1 (we will start with NO tracked cameras at start, so all 3 will be fixed)
- Output: The final mixed image rendered in Aximmetry (if this is possible)

USe case 2:

- Input: 3 Cameras
- Virtual Cameras: If possible to add them allongside physical cameras for beatufull movements when the 3D sets allows it: 2
- Tracked Camera: 0 or 1 (we will start with NO tracked cameras at start, so all 3 will be fixed)
- Output: Individual physical camera and we use a Video Mixer to mix them

How does this sounds?

Thanks again for your support

Hi DreamDigital,

You haven't specified the model of the motherboard. This can be an issue because some motherboards can only use a maximum of 16 PCIe lanes at once, even though they offer many more PCIe lanes for mounting. Your capture card will likely use 8 PCIe lanes, so if only 8 lanes are left for the RTX 4070 Super, it could cause a slight performance decrease in that GPU.

Regarding the one camera angle limitation per computer: This limitation does not apply when using Aximmetry's render engine instead of Unreal's. However, the camera compounds are designed so that you cannot output more than one final render, even with Aximmetry-rendered scenes. With a bit of editing, you can change that, but it is not recommended as your scenes would have to be very simple to be rendered three times in full resolution.
Additionally, you need to solve the issue of having three outputs (one per physical camera) with the RTX 4070 card, as the DeckLink Quad HDMI Recorder capture card only supports inputs. The RTX 4070 has 1x HDMI 2.1 and 3x DisplayPort 1.4a outputs.

I would suggest not using an external video mixer device while you have only one rendering computer. Instead, use Aximmetry to switch between cameras.

Control over Aximmetry can be handled from for example a handheld device which can create a similar experience as an external video switcher.
Note, Aximmetry supports countless controller devices:  https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/supported-hardware/controllers/controllers/
In this case, the Preview output would be shown to your Aximmetry operator (while the Out is for the audience).

The operator could change what is shown in the preview using the PREVIEW MONITOR OUTPUT panel:

In the case of Unreal rendered scenes, because of the camera angle per computer limitation, this preview for the operator will only show the billboard (only the keyed talent, without rendered virtual scene) when viewing a not selected camera:

Warmest regards,

@dreamdigital: Use case 1 works, with both tracked and virtual cameras. Use case 2 won’t work if you use Unreal. Even if using the Aximmetry 3D engine, I don’t think a 4070 could handle rendering and outputting all camera angles simultaneously. Also note that the Aximmetry 3D engine has a completely different workflow for building scenes and also looks quite different compared to Unreal. 

There’s a third option you might consider: Use pre-rendered backgrounds for two static, closeup cameras. Those can be static images or video loops recorded or exported from Unreal. The main camera would use the real-time Unreal rendered scene, with either virtual and tracked camera moves. As long as you don’t have dynamic content rendered on screens visible in the closeup shots, this would the same as having all cameras rendered in real-time by Unreal, while allowing you to output three different camera angles to a video switcher. 

Keep in mind that if you’re sending all cameras in 4K (which will look much better than keying in 1080p) you might run into PCIe bandwidth issues if you’re also outputting cameras individually in 4K. The “correct” way to do this is still to use one computer per camera.