Hikvision DS-2CD2T86G2-ISU/SL motion blur and ghosting

[WelshPaul]

OK, weird but this is what is happening with stable Blue Iris 5.7.9.12 and Beta 5.8.0.12...

If I export/convert a clip by right clicking on an Alert, it exports with the correct resolution of 3840x2160.


I cannot attach the raw file here as it's to large, so a link is provided below:
C4.20231101_120000_2.mp4

Here is the ffprobe result:
Stream #0:0[0x1](und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, progressive), 3840x2160, 74029 kb/s, 14.96 fps, 30 tbr, 90k tbn (default)

However, If I export/convert the exact same clip by selecting a Start and End Frame on the timeline then it exports at a lower quality (2264x800) even though the settings for both exports are exatly the same.


A copy of raw exported timeline file is attached to the bottom of this post.

Here is the ffprobe result:
Stream #0:0[0x1](und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, progressive), 2264x800, 15132 kb/s, 29.78 fps, 30 tbr, 90k tbn (default)

So Blue Iris is messing with timeline exports!!!

 

[WelshPaul]

I have posted a copy of the above post in the Blue Iris section of the community as it deserves it's own thread.

Getting back to the issue at hand, I will configure the Camera with the settings posted by @bigredfish and upload the RAW (high quality) export later tonight.

 

[Spirch]

ideally, if you can setup a share drive or put a sd card in the camera, record to it from the camera and get that original, untouched, raw file

this is what i am doing, these are the raw video from one of my camera

 

[alastairstevenson]

With the caveat that I know nothing about BI - so this is probably rubbish :

I've seen many posts where the CPU utilisation is substantially reduced by 'using sub-streams' but that mainstream is used for the triggered events themselves.
Does this mean the continuous recorded stream is the substream, and the alert recording (triggered event) is using the mainstream?
I've not looked at the fine detail you've posted, but apart from resolution, are any other settings different enough such that you could see that one extract is sub-stream, one mainstream?


edit I see from the other thread that the cause of this puzzle has been figured out.
BI uses the size of the currently displayed playback image to determine the resolution of the output file.

 

[Spirch]

any luck getting / viewing better quality video using the camera settings? without having reprocessing / degrading quality from BI?

 

[bigredfish]

^^^^
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