pixel strobe on feed's from cameras

[Mstein]

Hi All,

So I just moved my blue iris setup to a new house.
And I noticed that my cam's have a pixel strobe or flash. Alot like a pixel shift if that makes sense. Video is smooth. But when looking at grass or similar objects, it appears that the pixels strobe.
Almost like a stutter in the frame rate.

I can make it less noticeable with Smart codec -- but that drops key frame/iframe to a variable --- also makes playback choppy.

Is it normal ?

 

[TonyR]

Man, if I had a 8 sec. video that good I'd be happy.
But more info needed:

• Camera make/model?
• Camera video settings (frame rate, resolution, bit rate type, bit rate, frame interval); screen shot would help
• BI video HA enabled or not and type if enabled, etc.

Also: have you read this? ==>> Troubleshooting Streaming Problems

 

[Mstein]

3 different brand cams --- the one in the video was a annke --- all cams do the same thing. IE have the same issue
Annke is in the video
Amcrest
dahue
all settings are very close to the same where they can be. I believe the pics to have everything requested.

Network side is a poe network switch ->Blue Iris nic

Internet is accessed thur a second network nic

 

[bp2008]

Also: have you read this? ==>> Troubleshooting Streaming Problems

The first issue on that page is most likely the one he's having based on the description

edit: watched the video clip, yup, that is the issue.

 

[Mstein]

Thanks bp2008! I knew I had seen that somewhere. Currently out and about.

From what I can see it might not be something I can eliminate. But I will try a few different settings on the cam.
To see if I can minimize.

I can see it on web interface for the camera so it is not blue iris.

I also adjusted the network card so I thought it might be there.

Is there a recommend config for network cards that I also should use ?

 

[TonyR]

Thanks bp2008! I knew I had seen that somewhere.

 

[Mstein]

And tonyR, sorry out and about distracted.

 

[bp2008]

Is there a recommend config for network cards that I also should use ?

No, this is not related to the network card at all.

 

[Mstein]

Confirmed increased the bit rate. Minimized it also lowerd the frame rate a little bit. Helped hide it. Not gone. But not as distracting.

 

[Ri22o]

Confirmed increased the bit rate. Minimized it also lowerd the frame rate a little bit. Helped hide it. Not gone. But not as distracting.

I just figured this was a thing and thought nothing of it. What bit and frame rates are you running? Mine isn't horrible but if going from 8192 to 10k+ will only give marginal change then I won't mess with it.

 

[Mstein]

I found just giving the cams the ability to send more data fixed it. One cam is 4k and was the biggest offender.

I also might be to chritical due to working as a video person.

 

[Ri22o]

I found just giving the cams the ability to send more data fixed it. One cam is 4k and was the biggest offender.

I also might be to chritical due to working as a video person.

Mine aren't horrible and is just an occasional dither in the stream. I might up the bitrate and see how it goes. I have mostly all 4mp with one 4k. Without looking I want to say 15fps and 15 iframe with 8192 on all.

 

[Mstein]

I can look in a bit. I think I am running a lot higher on the bit rate. I only have 3 cams on a physicaly isolated network. So.... I don't worry how much bitrate they use.

 

[Ri22o]

I can look in a bit. I think I am running a lot higher on the bit rate. I only have 3 cams on a physicaly isolated network. So.... I don't worry how much bitrate they use.

Thanks.

Mine are on their own network as well, so no concerns either.

 

[Mstein]

so my 8.3 is running at a bitrate of 2000 kb's a second
the 5.3 meg is running half that
and my problem child the 4.1 is running 750kb --- The cam would not allow me to bump it to correct for it.

The other two are good enough. In the end I just cranked them as high as I could to solve it. i watch the cams well I work. So them not blipping or strobing was more important then hard drive space and bandwidth.

 

[Ri22o]

so my 8.3 is running at a bitrate of 2000 kb's a second
the 5.3 meg is running half that
and my problem child the 4.1 is running 750kb --- The cam would not allow me to bump it to correct for it.

The other two are good enough. In the end I just cranked them as high as I could to solve it. i watch the cams well I work. So them not blipping or strobing was more important then hard drive space and bandwidth.

On the main stream?

 

[Mstein]

Ya. I don't use sub streams. Sub streams have there plus's but I did not see the need or use case in my situation.

 

[Ri22o]

Those are a lot lower than I had expected.

 

[Mstein]

because you mentioned that it was add --- I checked the amcrest, 8.3 meg pixal cam.

In the cam it's self it is set to 8448kb/s --- but blueiris reports 2000kb/s ---- I don't know why there is such a difference. very odd. 20 FPS key frame every 20

 

[Ri22o]

Ok, that seems more reasonable. I just went to double with no difference. I just added some and called it good.