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PostPosted: Mon Oct 07, 2024 4:47 am 

Joined: Mon Oct 07, 2024 3:34 am
Posts: 2
My PC env spec
MB: GIGABYTE B760itx AORUS PRO DDR4
CPU
13th Gen Intel(R) Core(TM) i5-13490F
Memory
32.0 GB
Available 27.8 GB
Cached 1.7 GB
GPU 0
NVIDIA GeForce RTX 4070 Ti SUPER
Driver version: 32.0.15.6590
Driver date: 9/26/2024
DirectX version: 12 (FL 12.1)

iPi Recorder 4.7.0.98
OS: Microsoft Windows NT 10.0.19045.0 (64 bits)
.NET: 4.7.2.533325
CPU count: 16
GC: workstation (Interactive)
Running in 64 bits

----------------------------------------------------------
ISSUE that I met
The way to produce the issue:
1. Open 'Recorder 4'.
2. Plug in just '1' C922PRO cam.
3. Start recording, and see Preview + Cam Setup.
3.1. I can see Cam but no Microphone even click on refresh.
3.2. The preview.
Attachment:
1st shoot.png
1st shoot.png [ 222.22 KiB | Viewed 352 times ]

4. Then follow the proc and the recorded video is 59.6fps, which is nothing wrong (juts like IPI doc said, 'it has a little bit drop from 60fps').
5. Then do another record. The cam is plugged in still, no re-plug.
5.1. Now Microphone shows up. But the preview has only 60fps for few seconds then drop to <20fps.
Attachment:
Screenshot 2024-10-07 042004.png
Screenshot 2024-10-07 042004.png [ 64.61 KiB | Viewed 352 times ]

5.2. Left the cam setup with no change and the color is different from the 1st shoot.
Attachment:
2nd shoot.png
2nd shoot.png [ 240.05 KiB | Viewed 352 times ]


Other Concerns
I found setup like 'Auto Exposure' or 'Auto White Balance' can impact FPS.
I can tune setup params, and got a stable 1080p30fps. When I use the same setup and switch to 720p60fps, it only gives me ~32fps.
I have no idea why this happened even I only use one camera. 1080p should be = 1.5^2 * 720p pixels and 60fps = 2 * 30fps, which will have similar data size.
I will record the issue reproduction into one video and post later.


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PostPosted: Wed Oct 09, 2024 6:00 am 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 450
Hello,

To get 60 FPS with Logitech C922 Pro cameras you should turn ON auto exposure and turn OFF low light compensation for each camera:


Attachments:
c922-low-light-setting.png
c922-low-light-setting.png [ 141.43 KiB | Viewed 350 times ]
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PostPosted: Wed Oct 09, 2024 10:48 am 

Joined: Mon Oct 07, 2024 3:34 am
Posts: 2
andrew wrote:
Hello,

To get 60 FPS with Logitech C922 Pro cameras you should turn ON auto exposure and turn OFF low light compensation for each camera:


Thanks for your reply. Before the comment, I have already tested it out and found the solution like you mentioned.
By the way, when I tried tuning those parameters, the FrameRate sometimes changed rapidly. e.g., Trun off the auto-exposure, then tune the exposure var. FrameRate can vary between 10~50fps. I have no idea what happened in the back. Nevermind, just mention it.

Another concern is, since Azure Kinect is out of stock. Have you figure out how to deal with Orbbec Femto Bolt? You mentioned this in your hardware doc and it seems that there are many bugs and issues. Is it safe to try this device at this moment?


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PostPosted: Mon Oct 14, 2024 7:55 am 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 450
Hello,

dt990pro wrote:
Another concern is, since Azure Kinect is out of stock. Have you figure out how to deal with Orbbec Femto Bolt? You mentioned this in your hardware doc and it seems that there are many bugs and issues. Is it safe to try this device at this moment?


The latest version of iPi Recorder does support Orbbec Femto devices. It is stable enough to be usable for motion capture.


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