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  1. Gyula614

    5442 sound quality

    You are right that it's much better to use a good sound system than a simple notebook. To maximize it, I use headphones if something is of interest. Headphones may even sound better than Hi-Fi speakers since each side uses a single full-range speaker. But to hear every critical detail, you may...
  2. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Sorry, forgot about this thread. Substream resolution downscaling caused the CPU load. It normalized after changing the BI substreams to VGA-like res. (camera support dependent).
  3. Gyula614

    5442 sound quality

    Any experience with HDW5449H-ASE-D2? I have a few of that model and just have a fading memory that indoor sound was good. Should try it again sometime but the cameras are far from my current place. That's an interesting model btw. Inside the two separate cameras have different aperture, and also...
  4. Gyula614

    5442 sound quality

    Just tested three cameras. HDW5842T-ZE-S2, HDW5442T-ZE-S2, HDW5842T-ZE-S3. They are not bad. I remembered the HDW5842T-ZE-S2 is silent. Now with ambient noise it really blocks details. And it's the most silent from the three. The HDW5842T-ZE-S3 is comparable to a good sounding Hikvision camera...
  5. Gyula614

    5442 sound quality

    Great. I try the bullet then and may put in locations that cover the audio area. Did you refer to the big 5442E-ZE and bigger bullets 5442H-ZHE or to the small ones 5442T-ASE, 5442E-ASE? Do you think the TiOC pro is comparable in night vision? From 3449 model number it may be a white light...
  6. Gyula614

    5442 sound quality

    I use 7616 Hikvision NVRs and BlueIris. The quality is the same on both. Not using DMSS. AAC is at 48 kHz and maximal biteate. The problem is that it's very quiet and lacking most details and sound. It becomes clear around 80 dB SPL. Like it's applying "noise reduction" anyway, regardless of...
  7. Gyula614

    5442 sound quality

    Hi, I've tried few Dahua cameras. Most of them were 5442. The quality at night is outstanding. But I'm not satisfied with the sound quality. Also have tried many Hikvision cameras before. Their night image is crap compared to 5442 but the sound is better. They also had various sound quality but...
    • Gyula614
    • Thread
    • 5442 codec dahua filter firmware inaudible microphone noise sound volume
    • Replies: 12
    • Forum: Dahua
  8. Gyula614

    Amazon Driver Stolen Package

    Darwin prize winner.
  9. Gyula614

    Where to find Dahua 5842 and 5442 motorized turrets at affordable price?

    Hi, Thank you for the thorough answer. Megateh is good at the current discount, I've also just found them. But keep in mind they have S2 models from both 5442 and 5842. 5442 S2 is good but 5842 S2 night vision is a bit blurry, so S3 would be the excellent choice for that money. Just woke up...
  10. Gyula614

    Where to find Dahua 5842 and 5442 motorized turrets at affordable price?

    Hi, I'm located in the EU and since Dahua and Hikvision is banned in the US, Chinese ebay sellers of 5842 and 5442 models disappeared. All I can do is buying from EU sellers at 2* or 3* the Chinese price. But even their inventory seems depleting. AliExpress also hides auctions as soon as my...
  11. Gyula614

    Dahua IPC-HDW4431C-A review

    Yes, a bigger sensor than 1/3" would definitely be better for 4 MP. Bests are 1/1.8"s.
  12. Gyula614

    Dahua IPC-HDW4431C-A review

    Hi, You have done a very detailed test of some static parameters. But I don't know how useful they are. Because what makes a sec. camera good or bad is how it performs at night on moving people. Will it keep the object edges and show the people identifiable or not. A very few camera is capable...
  13. Gyula614

    Dahua cameras not holding correct time

    It's working correctly. Just incompatible NVR sets periodically to incorrect time. You must create a user for either ONVIF or regular, whichever your NVR uses to login. For the new user you must set the lowest group privileges and login with that username from all NVRs. Then the NVR won't be...
  14. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    That's a good idea. I hope they watch IPCamTalk. It's their forum. Was wondering on other surveillance product but they are expensive like crazy. My best feature would be thrown object detection. But as long as the AI doesn't keep track of the identified objects on the sequential images it's not...
  15. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Great. Do you use blank-out areas?
  16. Gyula614

    Thrown object detection

    No. Like a table tennis ball. On camera it's clearly visible.
  17. Gyula614

    Thrown object detection

    Other risk from robbery and direct violent acts is poisoning pets inside private area. It should be detected by an "intelligent" camera network controller SW. As it requires the analysis of successive video frames and trajectory detection of moving objects it is questionable if possible with BI...
  18. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    However now both YoloV5 and YoloV8 give much more false positive detections, in CP AI 2.6.2 than it was in 2.0.8. So will revert to 2.0.8 tomorrow. Later version should be better I thought but it seems that it has kind of reached its limits by many reasons.
  19. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Just did an experimental test with CP AI Benchmark tab. Got an image from the web: Rescaled that to various sizes: 4k, 2k, 1280, 720, 640, 320, 160 wide images and provided them to the AI benchmark. Then checked the resulting detection %, FPS and CPU load. Detection % of the person on the...
  20. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Thanks, will try D1 or 640*480 whichever is available on the camera. full resolution at high fps/bit rate must be used for identification. 3 streams are ideal I think because phone apps can use a low bit-rate low resolution secondary and AI can use a high bit rate fixed res. third.
  21. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Ok. Will check it out. Usually, as I remember it was at about equal in detection with similar resoltion (around 640x480). But some high resolution cameras have distant scenes. For them I kept the higher res. And after that as Dahuas can do 1080p on third stream I just preferred to have 720p or...
  22. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    The substreams are set to 720p or 1080p whichever is possible on the camera. May it have some rescaling to expected AI input resolution, that causes the CPU load? So, maybe rescaling of sub's frames can raise the CPU. What resolution do you use on substreams? I guess there's an optimal...
  23. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    That's promising. Just did a stop and restart to the CP AI on its webpage then the CPU goes down to 35% and then back to 100 on restart. The RAM usage also fell some GBs. Had a sreenshot but haven't saved. Now tried again but it always autostarts. I can't stop it. Anyway it seems to be related...
  24. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Saved screenshots on disable and enable. Also got YoloV5 working. It has some internal bugs in CP AI, also attached. Is it something to do with camera resolution? This flats the CPU now.
  25. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    It's dedicated to this task. Nothing else uses this PC. Tried to disable the cameras earlier today. CPU went down to 0 %. Then gradually up to 30. It was a nice linear slope. Will try the FPS. Lower FPS for subs gives better image.. Will try on some of them to see if it helps. Now it's 3:18 AM...
  26. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Yes. That would be nice. There are motion zone masks to reduce false detections on some cameras. But it would de-compress the stream anyway to hand frames over to AI. So it's de-compressing frames on motion trigger. That's a considerable work to do. And it may do resize to AI input, but I'm not...
  27. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Camera status is great. Thanks for the idea. I was missing something like that for a long time. Attached the screenshots. It's running only for about an hour. 85 % is a good average. Now it's at version 5.8.6.7. Daytime it's somewhat more. All cameras are direct to disk (Although some privacy...
  28. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    I haven't left mine running for so long. Just about 5 minutes. As CPU didn't fall from 100 decided to revert the version and really everything after 5.8.6.7 ate a bit more CPU as the version number increased and went flat from about late-March versions. To the memory usage I saw similar when AI...
  29. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    Yes, the AI runs on substreams. No mainstream usage is allowed for any cameras. Eventually I tweaked the substream (third if available) quality to reasonable level 2 Mbit/s for 2 MP res., @ 15 fps, etc.) and AI really didn't give better results with with mainstreams. Haven't checked the wiki...
  30. Gyula614

    Excessive CPU load with newer versions than 5.8.6.7 version of BI

    My PC (i7 8700, 24 GB RAM, GTX 1660, 170 Mbit/sec total IP data rate from 28 cameras, CodeProjectAI 2.6.2) was around 85% CPU usage with maximal 1/sec trigger rate per camera. With the latest BI update versions since 5.8.6.7, as the version number increments it gradually flats to 100 % CPU. Is...
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