Livelink XR Camera Tracker in UE4 (Tutorial) (2/4)

[@RmaNYouTube]

Dude, this was the ONLY tutorial which covered everyting (Smoothing, Camera Offset, and most importantly the empty actort trick), I was losing my mind over the empty actor part which no other tutorial explained. Thank you for this 😘😘😘😘😘😘❤❤❤❤❤❤🥰🥰🥰🥰

[@greatideas218]

3:09 what is the point of the camera offset between camera sensor and tracker? Would it cause parallax issues? Wouldn't the pull focus and zoom blueprints make any precise measurement offsets pretty much useless?

[@BaazarStudios]

This was immensely helpful. You're the man.

[@daverobot]

Thanks very much for this tutorial, this works great! I have a question - is there a way to place the empty actor directly under the camera? When i parent the actor to the camera tracker, there is an offset making it a bit awkward to move around/rotate

[@MrYoungAndrew]

Thank you so much @Aiden Wilson! These have been so helpful! Could you pass on how to structure the blueprint to remove the smoothing so there is no smoothing? So that it just sets the position and rotation based on the livelink tick, but without smoothing? Thanks!

[@12KINTERIORS]

9:14 .. my camera is not aligning correct position to the tracker , its far away from tracker and also it is not moving along with the tracker. please help

[@POLSKAKOREANKA]

Aiden thanks for your work. I have a problem with recording the camera movement with the take recorder. It looks like it records the default position of the tracker and doesn't take into account the world transform.

[@mslitto9935]

Hi thank you a lot for this tutorial! I have a question, is there any chance to get it working as player controller in play mode?

[@antxionrhykel2699]

Using this blueprint as my base going forward with virtual production, I've tried to make a focal length adjuster using my mouse scroll, just a simple *get focal length - add/minus - clamp - set focal length* And bound it to scroll up for add and scroll down for minus. I tested this on my old vp camera bp and and it worked fine but in this blueprint it uses the variable cinecam but my zooming function requires component cinecam, I cant replace the variable cinecam in the blueprint because it require it for the livelink transformation. Do you know of a way to implement/link the camera in the editor with the variable in the blueprint so I can get reference to both? I've tried setting up the cinecam as a separate BP and to link that as the default but it wont accept a BP as cinecam actor

[@antxionrhykel2699]

@@3d_Something interesting, so I found the node, and everything links up and the blueprint says it works, but as soon as I play and try to edit the focal length with scroll for example, nothing happens, i swap over to the old VP cam Bp and with the same scoll zoom nodes it works... Its almost as if it cant actually change the linked camera in the scene

[@pawelkaimphotography]

Hi Aiden, need some help with one blueprint I want to create in UE5. I am new...but I am sure it will be a piece of cake for You. It is about using camera tracker. I made some test for virtual production and I noticed that my movement of the camera doesn't match my camera tracker movement. Just not at the precision I need. It is caused by some kind of position and rotation noise of the vive tracker. Actually I am using controllers for tracking. But I also noticed that if I switch the tracking source to headset that noise is significantly smaller. The problem is, it will not be handy to connect camera and headset together. But that made me thinking that size matters here. It is kind of logical that we got better resolution when our points are spread more in space. Hope You know what I mean. And here is my question... I made two actors....one taking data from one controller and other one from the second one.... What if we would combine those 2 or more datasets as average positions and spread them little bit around the camera in x,y and z (like diagonal 30-40cm )so they create average positions where those movements gives third actor that moves more smoothly in result? I would expect pretty good result from that... Would You help me with that please? I can pay If You create the whole blueprint and share it. Thank You... and I know that many of us looking for some solutions in that matter. BTW...I learned a lot from You. Thank You for your amazing work.

[@pawelkaimphotography]

Hi Aiden, any attempt to fix it from You?

[@FuzionsEditz]

Film Riot sent me!

[@leotian1614]

Hi Aiden，I use the tracker with out HMD , and I found that there is still a jitter problem following this tutorial. Any good suggestions?

[@AdityasinghSisodiya]

Hi Aiden, can you help with HTC Vive tracker noise and method to reduce it? It seems the tracker is always shaking with error of 0.05 units in Unreal Unit

[@3d_Something]

I'll see if I can't come up with something

[@FlorentCorchia]

Hi Aiden, thank you for the amazing tutorials! I'm having some issues with LiveLink, I add the source in the Livelink window but it says "no data" and I can't see my devices, would you have any idea why? I'm using a oculus quest 2, for dev purposes until I get vive trackers.

[@FlorentCorchia]

I've got it working by disabling the Oculus plug-in

[@foxy2348]

Hey AIDEN, I'm loosing my mind. I used your Setup which seems amazing. And everything works like yours does in the editor. However if I try to render in the Render Que, the Tracker overrides the Sequence, and It doesn't render the recorded Shot. I reeaaly don't get how to get around that. I tried literally since days. Anyone Help?! ^^

[@3d_Something]

So you need to set it up so the tracker is seperate to the camera, and the transform is transferred to the camera, then record the camera only and you can remove the tracker blueprint when your done and nothing gets overridden. The Optitrack virtual camera video shows exactly how to set this up, just replace the Optitrack livelink with the OpenXR one

[@original9]

Hi Adien, I've followed the tutorial to the letter. When trying to set the actor location and rotation the node will not connect to the cine camera node. Says cine camera component object reference is not compatible with actor object reference....any ideas how to fix this?

[@original9]

@@3d_Something the was only one setLocation' available even when I uncheck context sensitive. Okay that connected (the actor variable) sonil continue to go through the tut, thanks!!

[@original9]

@@3d_Something cineCamAcotr is the one you suggest then? or component?

[@psaltiveri]

Can livelink xr use oculus rift controllers as camera tracker too?

[@3d_Something]

No sadly you can't use the HP reverb either only HTC and the Valve Index.

[@kennytan5570]

Hi Aiden, my livelink seems to be locked at 24fps. Is there a way to change the frame rate?

[@9886.doodelic]

There is a prompt for me to install visual studio, I don't understand at all.

[@3d_Something]

You need visual studio to compile a project however you shouldn’t need it to run in editor

[@9886.doodelic]

@@3d_Something Thanks for reply bro, visual studio is not showing in word setting page, can you figure out why?

[@3d_Something]

@@9886.doodelic visual studio isn’t something inside unreal it’s an external program made by Microsoft for writing and compiling code

[@9886.doodelic]

@@3d_Something Once again sorry to confuse you. Actually I mean Virtual camera in word setting. Thank sir.

[@youmix2664]

One question. My camera after selecting cine camera actor from details is pointing in opposite direction. I've done everything like in tutorial. Any fix?

[@BadBlack147]

Maybe check the orientation of your tracking hardware.

[@youmix2664]

@@3d_Something You and @Josep Trejo are right. I missed that moment when you said You prefer this position. I prefer my tracker to point forward when laying with logo up so I changed translations in plugin. One more question. Will you tell us more about moving this World position actor with keyboard with no offset? Now I think offset from this actor to cinecamera is making this control during playmode unusable in production, so I use setup similar to your previous tutorials - pawn with all the nodes in it

[@youmix2664]

@@3d_Something I see, but for my purposes play mode is more important because I have programmed camera movement and other controlled elements. Nevermind. I will try to solve those problems by myself for now. Thank you anyway for your great tutorials!

[@antxionrhykel2699]

Is it possible to have a link to Duncans camera smoothing tutorial, after a few searches I couldn't find anything with his name. I've looked at Greg's, I just want to see what everyone is doing and what works best for me

[@relshin]

Anyone find this?

[@dajesz.pawciu]

Could ypu please also paste the link to Greg's tutorial? I can not find it.

[@dpredie]

Shouldnt you use entrance pupil instead of sensor for camera relative offset?

[@dpredie]

@@3d_Something interesting point, thanks!!

[@dpredie]

Do you have a good way on calibrating lens? I have been using polypulse’s free lens calibration. Not sure if there’s any orher open source option

[@youmix2664]

Great! Thank you!

[@artificialintelligencenews7169]

I’m pulling my hair out

[@anasofiamonteiro8551]

ahahaha, same here