Too bad everyone here got rid of YouTube and could ask him questions LOL...I seem to recall
@looney2ns posted a question once he didn't answer.
The forum does get mentioned....
View attachment 88524
fwiw: ( text of the above + full image )
Brian Simmons
1 week ago (edited)
The Reolink system is inexpensive and has a lot of features. Picture quality is not one of them however. The "ghosting issue" at night should be a clear turn off for people. The whole point of having a camera system is to get good quality shots that can be used to identify people. If it only works during the day, then the system is pretty pointless. There was one point in this video where the Ubiquity camera had motion blurring DURING THE DAY. This is completely unacceptable. Blue Iris is the clear winner here. It's because of it's flexibility and ability to use any RTSP streaming camera (not just ONVIF). Paring a BlueIris system with cameras like the Dahua IPC-HFW5442H-ZE or the Hikvision DS-2CD2087G2-L(U) ColorVu will give results that are a magnitude better than the results shown here.
reply:
The Hook Up
1 week ago
I’d really like to see Reolink fix the ghosting issue. Contrary to what the IPCamTalk crowd says, I don’t think it has to do with iframes, it is likely the result of shutter speed.
Brian Simmons
1 week ago
@The Hook Up It definitely has to do with the shutter speed and gain settings. Obviously at night, most cameras will default to a very slow shutter speed (1/20th a second for many cameras). This is way to slow and will cause images to be blurry due to motion. However, having the gain settings up too high will also cause ghosting where parts of a person will "disappear" or become transparent for an instant, etc. This is also were using a high resolution (4k/8mp) camera is harmful. If you have the same size sensor (1/2.8" for example) on a 4k camera and a 2k(4mp) camera, the 2k camera will provide better low light performance because the pixels are twice as large and can absorb more light. More, but smaller pixels (4k) is worse in low light than fewer, but larger pixels (2k). The Reolink RCA-820a cameras have a 1/2.49" sensor with 4k resolution. Compare that to the Dahua IPC-HFW5442H-ZE (or others in the 5442 series) camera that have a 1/1.8" (that's a much larger sensor size) with only 2k resolution and the Dahua is going to absolutely dominate the Reolink in low light performance. Sure it gives up a little during the day because arguably 4k is better than 2k, but I'd rather have a camera that performed well in all lighting than one that simply doesn't work in low light. We don't have to be satisfied with blurry, ghostly images in low light. There are actually cameras that perform well enough to get good low light images.
The iframes issue doesn't prevent the camera from getting good low light images, but it does prevent the cameras from working well in BI and other NVRs. This is because without the iframe coming in about once per second, the stream can (and does) become unstable over time. They might work great with the Reolink NVR, but using them with BlueIris can cause stability issues. I actually have an older Reolink (an RLC-410) that I run in BI, but it does become unstable sometimes.
The Hook Up
1 week ago
@Brian Simmons From what I understand, the industry standard is iFrame of .5, meaning double the framerate. On hikvision cameras if you press the auto button for iFrame it gives you .5. I do agree that the reolink substream has too low of an iFrame, but there's no reason the mainstream .5 rate should cause issues in BI, especially if it's using quicksync which can absolutely handle a .5.
As far as resolution, it is an unfortunate tradeoff of increasing megapixels. I am personally not willing to sacrifice as much as I've seen some other people do. I've purchased many of the most recommended cameras from IPCamTalk (which I am banned from by the way, so I can't contribute or stand up for myself when they continue to talk shit), and while the 4MP cameras that they are currently recommending are okay, the 2MP cameras they were recommending 2 years ago were TERRIBLE. They gave a totally blurry garbage image with no motion blur.
Analysis:
"I've purchased many of the most recommended cameras from IPCamTalk (which I am banned from by the way, so I can't contribute or stand up for myself when they continue to talk shit), and while the 4MP cameras that they are currently recommending are okay, the 2MP cameras they were recommending 2 years ago were TERRIBLE. They gave a totally blurry garbage image with no motion blur." - The Hook Up
So the Hook Up has NO issues promoting absolutely crappy Reolink cameras for low light image capture and compares the Dahua OEM camera often mentioned here in IPCamTalk. In fact, even after the video review when the Reolink fails to capture an image in low light of a moving person. In fact the "terrible" camera The Hook UP claims still is vastly superior to those Reolinks in low light image capture. Never have I seen some just disappear at the range and distance which the review from the Hook Up showed the Reolink to mysteriously lose the moving subject. Still
The Hook Up still gave the Reolink cameras top recommendations. ( this is a clear indication of a compromised youtube reviewer )
This is the problem, The Hook Up is so clearly a part of the massive deception campaign by Reolink to sell cheap cameras at good profit margins. ( the Cameras have very affordable components, so affordable they must cheat the game to appear to be decent. ).
There simply is no way to make these cheap Reolink cameras take better low light image captures without spending more on the hardware components, and thus Reolink games / cheats the system by:
1) Engineering tinkering, just like the VW Diesel Gate - except this time to deceive the purchaser - not the Government Regulators.
The Engineering team has clearly modified the Reolink cameras to show the best low light image by changing their setting in low light to maximize still image capture quality. ( shutter speed .. )
2) Engineering tinkering to prevent proper use of iFrames
3) Astroturfing forums, like IPCamTalk and others - to plant positive spins on their products.
4) Manipulation of Social Influencers ( This is where the Hook Up becomes part of Reolink Deceptive practices .. )
Usual game, free products for positive reviews...
5) Manipulation of Amazon and the like reviews to maximize positive reviews / ratings.
Wonder how that conversation would have gone?
Linus Tech Tips, I'm looking at you! 