Zoom does not work

[LighthouseMedia]

Using a ptz face tracker filter, on a fomako IP Camera, the camera will not stop zooming. I have tried adjusting every variable, the only way i can get it go go back is to invert controls.

[norihiro]

Thank you for considering to use this plugin.

When you enable Debugging/Show face detection results and Debugging/Always show information, you will see green box and yellow graticule. The green box indicates location and size of the detected face. Yellow graticule shows the target size the filter will zoom to.

If the yellow graticule is much bigger than the detected face, consider setting small number to Tracking target location/Zoom. Currently 0.10 is the minimum.

If the green box is not following the face enough, please consider setting Face detection options/Scale image to 1.00 instead of 2.00. This will increase CPU usage but can detect smaller face.

If you don't need to control zoom, I suggest to set Max control (zoom) to 0 so that this plugin never controls zoom.
I checked your YouTube video. The location of the camera looks not necessary to control zoom since the pastor does not move forward and backward.

If the size of the green box keeps changing though the position is correct, and if you want to control zoom as well, I recommend to add face landmark detection.
For non-commercial purpose, this data would be useful. https://github.com/davisking/dlib-models#shape_predictor_68_face_landmarksdatbz2. Please check license of the data meet the usage.