Hi Laurie,
You can set the desired resolution by editing nuitrack.config. You can find this file in the folder %NUITRACK_HOME%/data. Open it and find the sections Realsense2Module.Depth and Realsense2Module.RGB. Set the resolution in ProcessWidth and ProcessHeight. For example, you can set the default resolution 1280x720 for D415 this way:
"Realsense2Module": {
"Depth": {
"ProcessMaxDepth": 5000,
"ProcessWidth": 1280,
"ProcessHeight": 720,
"Preset": 5,
"PostProcessing": {
"SpatialFilter": {
"spatial_iter": 0,
"spatial_alpha": 0.5,
"spatial_delta": 20
},
"DownsampleFactor": 1
},
"LaserPower": 1.0
},
"FileRecord": "",
"RGB": {
"ProcessWidth": 1280,
"ProcessHeight": 720
}
},