Hi everyone
I’m trying to track talent inside a green screen volume. I’m using an HTC Vive Tracker to track a billboard, and my goal is to record the tracker’s movement so I can import it later into Unreal Engine as an FBX.
I attempted to record the tracker’s transform using Game Pose and Tracking Recorder, but the exported FBX is empty — when I import it into Unreal Engine, there are no keyframes.
Recording works correctly when I use the Record 3 Audio compound, but I want to record the tracking separately, without relying on the Record 3 Audio node. To do this, I copied the necessary nodes from the Record 3 Audio compound and tried to build a custom tracking recorder compound, but it still doesn’t work and produces empty FBX data.
Is it possible to build a custom compound to record tracker transforms and export them properly to FBX?
Thanks
Hi,
The Tracking Recorder module requires the Timecode pin to be connected, as this is used to generate keyframe times. In the Record_3-Audio compound, the timecode must match the recorded video's timecode, so the Video Recorder module supplies the timecode to the Tracking Recorder module.
In your situation, you need an artificial timecode source. You can achieve this by using the Frame Counter and Index To Timecode modules. Connect the Frame Counter to the Index To Timecode module, and then link the output to the Timecode input of the Tracking Recorder, as shown here:
Warmest regards,