Recent content by kammi

  1. K

    Suggestions for protecting the CCTV imaging cell from direct sunlight

    @bigredfish The picture posted by @bp2008 is exactly what I meant. Good to hear the damage is not that severe, but rather visible only during high-gain settings at night. So the trace of the Sun is visible on that specific path only because during the summer solstice, the Sun has stayed near the...
  2. K

    Suggestions for protecting the CCTV imaging cell from direct sunlight

    I have read from this forum that large CCTV camera cells can be vulnerable to direct sunlight. Long exposures to direct sunlight may damage the pixels, and the Sun's orbit in the sky may manifest in visible brightness and color differences between pixels. Of course, the issue concerns only those...
    • kammi
    • Thread
    • Replies: 3
    • Forum: Dahua
  3. K

    Looking for advice on starlight camera for live stream

    Sounds like I might purchase either the 2.8 mm or 3.6 mm focal length IPC-Color4K-X. The 2.8 mm has, of course, a larger field of view, over 100 degrees, while the 3.8 mm has less than 90.
  4. K

    Looking for advice on starlight camera for live stream

    So essentially, the focus at infinity should be pretty crisp with the fixed focal cameras, right? I mean, stars should remain point-like and not appear blurry? Do turret and bullet cameras have different optics in this sense? @garycrist mentioned that bullet cameras should be better, but maybe...
  5. K

    Looking for advice on starlight camera for live stream

    I am also interested in good IP cameras for sky monitoring. IPC-Color4K-X/T and the Color4K 180-degree bullet camera are recommended often, also in this thread. My concern is the depth of the field of the cameras. The sky is basically at focus at infinity. The 1/1.2" sensor cameras are all fixed...
  6. K

    A passively cooled mini PC for RTSP proxy usage

    I would like to hear recommendations for a small X86-based PC that is passively cooled and can run MediaMTX (that is, an RTSP server/proxy GitHub - bluenviron/mediamtx: Ready-to-use RTSP / RTMP / LL-HLS / WebRTC media server and media proxy that allows to read, publish and proxy video and audio...
  7. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    Thanks for the tip! Looks like the CPU usage is 25-60% if the IVS is on and the bitrate is 6144 kbit/s with the full resolution (I do not know how to manually update the value in Home Assistant so the measurement frequency is low).
  8. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    So far it has worked pretty well. It boots from an external SSD, which acts also as the / mounting point. Besides these few times of corrupted DAV recordings, it works like a charm (I think the issue is not because of the RPi 4B itself). I use WireGuard to access the NFS mount remotely to view...
  9. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    I am using PoE. Unfortunately, I did not anticipate that I would need a multi-port PoE switch so I have a single-port PoE injector at the moment. I also wonder if people use TCP or UDP along with RTSP (I use always TCP).
  10. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    @wittaj @looney2ns Would it suffice if I purchased an unmanaged switch (like TL-SG105) and plug in the camera, my NAS server, and the router on the switch? As I understood, the camera data would go through the switch to the NAS, but I could still be able to log in to the camera and view the...
  11. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    Actually, I do not have a dedicated switch. The data goes through my home router, but as I said, there is virtually no other traffic than the camera data. But maybe a direct connection would make sense. I was thinking of a dedicated switch at some point to save camera data 24/7 to an HDD but...
  12. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    Saving to an internal microSD card works flawlessly, the issues sometimes appear when the video footage is saved on an FTP/NFS server.
  13. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    So far, I have used my T5442 to save the video events on the inserted microSD card. I would like to use NFS or FTP to save the videos on another device to view and back up the material more easily. However, using either NFS or FTP results in corrupted DAV files. There are block artifacts present...
  14. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    The latest firmware has greatly reduced the false alarms. The camera does not trigger false IVS events at all during snowfall.
  15. K

    IPC-T5442T-ZE IPC-T5442TM-AS IPC-T5842T-ZE SMD 3.0 Smart IR Latest New Firmware From EmpireTech

    I upgraded the camera, everything seems to work fine. Time will tell, whether the number of the false alarms decreases. In the firmware version V2.840.15OG00D.0.R, Build Date: 2022-08-18, how do Global IVS sensitivity and IVS Rule sensitivity play together?
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