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Downloading videos files directly from camera via web interface (using other than IE) seems to be capped at *TEN* Mbps
Good suggestion ... but unfortunately I don't have switches that show that info. My "solution" is to hook my laptop up to the end of the cable run and run Speedtest. If it comes back at 100 Mbps, I know there is "something" limiting going on. But if I see 500+Mbps (I have GigE to the house)... -
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Downloading videos files directly from camera via web interface (using other than IE) seems to be capped at *TEN* Mbps
Ooops ... as a network guy, it's embarrassing that I made that typo ... and yes, MBps is (about) 10X Mbps. Thanks for pointing out @bp2008 and fixed in in OP. While it would not surprise me that there is a different code path (good point on buffer size), it's amazingly coincidental that the... -
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Downloading videos files directly from camera via web interface (using other than IE) seems to be capped at *TEN* Mbps
UPDATE: If you use Internet Explorer (with plug-in), you can download videos via the web interface at the full 100Mbps speed - note you can't go any faster because the NIC doesn't support GigE. Thanks @TheOtherMike for pointing that out on the data sheet (maybe for 2024, Dahua will go with... -
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2MP vs 4MP vs 8MP
AGREED!!! It would also be helpful if they would give us some idea of how "good" the sensor technology is ... or at least a date ... since a 2023 1/1.8" sensor should be able to outperform one from 5 years earlier. Obligatory comment that I would love Dahua to come out with a "light-sucker"... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
What's doubly frustrating about the poor qualify of the JPEG from the API call is that the camera clearly has a sensor, lens, etc. to generate a pretty darn image ... so there is something goofy going on in the image processing software. Also see the examples I show in this thread. As a... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Thanks @bigredfish for doing this. Maybe it's because I'm a photographer, but the banding just jumps out at me as absolutely terrible from the API image. Yes, you would obviously expect some drop in image quality, but seems like waayyy more than one would expect. I pulled the PNG into Photoshop... -
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latest Version of DAHUA HTTP API FOR IPC Documentation ??
Is there updated API documentation for the 5.0 software? I'm running 3.100.15OG000.0.R Build Date:2023-11-27 on a IPC-T54IR-ZE-S3 (with 2nd one showing up today - early Christmas present! ;-) -
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Mini-Review - 5842-Z4E-S3 AKA B58IR-Z4E S3 - Replacement to the 5842-Z4E (8MP on the 1/1.8" sensor)
GREAT examples showing the difference - well done! Ditto what you (and @EMPIRETECANDY ) said about how they are for different use cases. Gotta say I'm surprised to see that, because while the 8MP camera has smaller size pixels, the overall sensor size is the same (yes?) so assuming all those... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Nope - just login to the web interface and grab a snapshot via that interface using the camera icon at the top right which (for me) is a multi-megabyte PNG. In another tab at about the same time, hit this URL - USERNAMEcolonPASSWORDampersandIP/cgi-bin/snapshot.cgi - which (for me) is a several... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Ditto what @bigredfish and @wittaj said that I'm sure @eggy you'll be happy with the T54IR-ZE-S3 camera. I certainly am ... and in fact, just ordered a second camera ... plus have already switched to it at Watching Grass Grow ... ;-) LOL for cat lovers that here's a 12 second time-lapse from... -
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Hikvisions newest Pro Series Hybrid cameras
How would you compare the low-light performance of the Dahua 5442-ZE-S3 versus the 5526 and more recent 2/5/7xxxx cameras from Hikvision? Also, the Dahua "H" series has an F/1.2 lens versus F1/.8 ... so the light gathering is 2X ... but otherwise sensor quality, etc. is similar? -
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Hikvisions newest Pro Series Hybrid cameras
Can you please expand more on this @steve1225 ? I have a Hikvision 5526 from a couple of years ago and recently got a Dahua 5442-ZE-S3 ... the later appears to have noticeably better low light performance. Anyone making a vari-focal camera with F/1.0 lens and (good!) 1/1.2" sensor?!? ;-) -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Thanks for the response and it sounds like it's not specific to the "little brother" ZE ... which makes sense because this would not be a device specific function - i.e. might be part of the Web5.0 release - is that what it is called? There are some super-experienced Dahau users on this thread... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Any chance someone with the "big brother" Z4E can confirm the poor snapshot image quality that I'm seeing on the "little brother" ZE? Super simple - just take a snapshot using the web interface and then surf to USERNAMEcolonPASSWORDampersandIP/cgi-bin/snapshot.cgi The former should be a... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
Sorry I somehow fat-fingered the link above - click here to see how the image quality from grabbing an image from snapshot.cgi is MUCH less than if you do a do a Snapshot from the Live view using the camera icon. Any ideas on how to improve the quality? -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
Reserved for update/solution ... I hope! ;-) -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
While not as obvious in the daytime pictures, the same problem exists. 1st image is the 3,697KByte PNG as generated from the web interface. 2nd image is the 187KByte JPEG as generated from an API snapshot. 3rd image is a 170KByte JPEG generated from Photoshop using the the original PNG and... -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
Finally, here's a comparison of the "road area" of the Web versus API snapshot. This done by pulling the originals into Photoshop, cropping the same 1500x400 top right corner, and then combining into a single image. You can "see" the lightening plus the blockiness. -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
Here's a GIF (glad to see the forum allows it to cycle) that shows the Web snapshot versus the API snapshot. So yea, when I convert to GIF, the color space changes ... but if you look at the originals I posted above, you'll see the same "lightening" of the image. That's why I'm wondering if... -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
Here's the web interface PNG (5,340KB) resized in Photoshop to Quality 10 (254KB) and Quality ONE (194KB). Both are better quality than the image above that the API call returns. -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
Here are the original images from using the web interface versus the API call. The PNG is 5,340KB versus the JPEG is 256KB. Take a look at the street - that's a crapload of black/grey blockiness! -
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API Snapshot quality is MUCH worse than Web Snapshots - blocky artifacts in shadows plus overall lightening
TL;DR - Why are the jpeg's obtained via the API Snapshot MUCH worse quality than the png's from using the web interface? 2024_01_09 Update: Per @duplo post #18, you can change some "SnapFormat" settings which will improve the quality. I still feel that if you compare the JPEGs as generated from... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
After searching some threads, I was able to find out what I wanted which is snarfing a snapshot. I was puzzled at first since the browser would correctly grab the image (make sure CGI is enabled under Network->Basic Services) using a format of... -
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Dahua Snapshot Image Size
As commented on this thread, the image quality from grabbing an image from snapshot.cgi is MUCH less than if you do a do a Snapshot from the Live view using the camera icon. Any ideas on how to improve the quality? I've tried adding some misc. parameters to /cgi-bin/snapshot.cgi, but doesn't... -
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HTTP Snapshots Download Times Slow [Advanced Question]
Pinging this thread because I'm seeing a similar behavior to the OP. While my total transfer time is reliability under a second on a recently purchased IPC-T54IR-ZE-S3 (with 2023-11-27 firmware applied), this is still slower than a 5-year old Hikvision camera that is on the same local network... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
Thanks for the feedback guys. FYI FWIW that here's what I did and what the differences were. 1. I had made some a few changes to the camera config,then did some testing, got everything read for the upgrade, got distracted by the wife, came back and hit the upgrade button ... and then realized I... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
So "Santa" (aka Andy!) just delivered a IPC-T54IR-ZE-S3 today. I've been futzing with security cams for a couple of decades - most recently the Hikvision world. So I'm fairly familiar with the concepts and the menu's are (not surprisingly) very similar. Under System->Update, it says System... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Thanks @wittaj for your expert comments. Per my earlier post, really impressive that the F/1.8 and 1/1.8" sensor Z4E camera has comparable (visible) low light capability as the the IPC-Color4K-T ... which is F/1.0 and 1/1.2" sensor. I think I know what to ask Santa for ... ;-) -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Yep - you gotta have SOME light! ;-) Just to be clear, when you say "But with the same amount of illumination, the Z4E comes close to the 4K", you are referring to visible light comparison - not B&W infrared on the Z4E- right? -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Can you expand a bit more on this ... particularly WRT to low-light quality? I.e. if you put the Z4E against a 4k-1/1.2" sensor camera, how would they compare WITHOUT illumination ... and NOT putting the Z4E into infrared mode? I certainly agree that a BIG WIN for the Z4E is using the optical...