Tip: If RTSP fails, use ONVIF discovery (ContaCam → Add camera → ONVIF auto-detect). V90 supports ONVIF port 8080 or 8899.
For users plugging in a USB device:
| Symptom | Cause | Fix using Contacam + V90/IP Cam | | :--- | :--- | :--- | | USB Cam disconnects | V90 overheating. | Reduce resolution to 720p. Add a heatsink to the V90's casing. | | IP Cam lag (2 sec delay) | Network congestion. | In Contacam, set "FPS limit" to 5 (for motion only). | | False alarms at night | IR glare on IP cams. | In Contacam, use "Zone masking." Exclude the window or heat vent. | | CPU usage 100% | Recording raw AVI. | Switch to "Motion JPEG recording" inside Contacam (Files > Format). | contacam+v90+webcam+ip+cam+hot
Using a script (AutoHotkey or Python) that monitors Contacam's alert folder (C:\Contacam\Recordings\Alert\): Set Protocol to TCP (reliable) or UDP (faster)
Version 9.0 was a significant milestone for ContaCam. Key features often associated with this version branch include: Tip : If RTSP fails, use ONVIF discovery
For users with network cameras (wireless cameras connected via Wi-Fi or Ethernet):