I've tried to connect to an "astronomical" webcam, the Svbony 105 using the INDI webcam driver and I've got a crashing indiserver. I'm running KStars 3.4.1 on MacOS 10.15.4 and I was able to connect with the camera using QuickTime Player, so the camera is available on the system
The logs are:
[2020-05-13T17:30:11.060 CEST DEBG ][ org.kde.kstars.indi] - Adding managed driver "INDI Webcam"
[2020-05-13T17:30:11.060 CEST DEBG ][ org.kde.kstars.indi] - Starting INDI Driver "indi_webcam_ccd"
[2020-05-13T17:30:11.061 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "FIFO: start indi_webcam_ccd -n \"INDI Webcam\""
[2020-05-13T17:30:11.061 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "With name: INDI Webcam"
[2020-05-13T17:30:11.061 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "FIFO: Starting driver indi_webcam_ccd"
[2020-05-13T17:30:11.061 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-05-13T17:30:11.062 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: pid=3752 rfd=10 wfd=14 efd=15"
[2020-05-13T17:30:11.062 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-05-13T17:30:11.090 CEST DEBG ][ org.kde.kstars.indi] - Received new device INDI Webcam
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: Webcam Driver initialized"
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on Telescope Simulator.EQUATORIAL_EOD_COORD"
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on Telescope Simulator.TELESCOPE_INFO"
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on Telescope Simulator.GEOGRAPHIC_COORD"
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on Rotator Simulator.ABS_ROTATOR_ANGLE"
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on Focuser Simulator.ABS_FOCUS_POSITION"
[2020-05-13T17:30:11.091 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on CCD Simulator.FILTER_SLOT"
[2020-05-13T17:30:11.092 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on CCD Simulator.FILTER_NAME"
[2020-05-13T17:30:11.092 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: snooping on SQM.SKY_QUALITY"
[2020-05-13T17:30:11.092 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-05-13T17:30:11.103 CEST DEBG ][ org.kde.kstars.indi] - INDIListener: New device INDI Webcam
[2020-05-13T17:30:11.103 CEST INFO ][ org.kde.kstars.ekos] - Ekos received a new device: INDI Webcam
[2020-05-13T17:30:11.118 CEST DEBG ][ org.kde.kstars.indi] - < INDI Webcam >: < RAPID_STACKING_OPTION >
[2020-05-13T17:30:11.132 CEST DEBG ][ org.kde.kstars.indi] - < INDI Webcam >: < OUTPUT_FORMAT_OPTION >
[2020-05-13T17:30:11.177 CEST DEBG ][ org.kde.kstars.indi] - < INDI Webcam >: < CONNECTION >
[2020-05-13T17:30:11.187 CEST DEBG ][ org.kde.kstars.indi] - < INDI Webcam >: < DRIVER_INFO >
[2020-05-13T17:30:11.187 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] Selected pixel format (yuv420p) is not supported by the input device."
[2020-05-13T17:30:11.187 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] Supported pixel formats:"
[2020-05-13T17:30:11.187 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] uyvy422"
[2020-05-13T17:30:11.188 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] yuyv422"
[2020-05-13T17:30:11.188 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] nv12"
[2020-05-13T17:30:11.188 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] 0rgb"
[2020-05-13T17:30:11.188 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] bgr0"
[2020-05-13T17:30:11.188 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: [avfoundation @ 0x7f8c2f008200] Overriding selected pixel format to use uyvy422 instead."
[2020-05-13T17:30:11.188 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-05-13T17:30:11.205 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "Child process 3752 died"
[2020-05-13T17:30:11.205 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: stderr EOF"
[2020-05-13T17:30:11.205 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "<delProperty device=\"INDI Webcam\"/>"
[2020-05-13T17:30:11.205 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2020-05-13T15:30:11: Driver indi_webcam_ccd: Terminated after #0 restarts."
[2020-05-13T17:30:11.205 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2020-05-13T17:30:11.205 CEST CRIT ][ org.kde.kstars.indi] - INDI driver "indi_webcam_ccd" crashed!