Topic: Logitech BRIO 4K Webcam

Hi everyone,

Has anyone tested this camera in Kinovea?
It is supposed to do 4096x2160 @ 30 fps, 1920x1080 @ 60 fps and 1280x720 @ 90 fps.
Does it work at all in Kinovea? Is it streaming in MJPEG?

Re: Logitech BRIO 4K Webcam

I was just messing around on a friend's BRIO and it shows up in the stable version with an option to do 640x480 @ 120 fps. however, we could only get it up to 30fps after dropping the exposure level.


in the experimental version we were able to get up to 120 fps but when we tried recording, it would only record at 30 fps. is there a setting in the experimental version to make the recording 120 fps instead of only 30?

brio

Re: Logitech BRIO 4K Webcam

Thanks for testing!

The recording should happen at 120 fps in the sense that all the 120 frames are put into the file per second, however the final video file is marked as 30 fps for replayability purpose. So the final file should look slowed down four times if you play it at 1x speed. This is triggered for any camera feed above 100fps.

There is no setting to change this at the moment. Although you could force it back to 120fps upon reopening by going to Video > Configure video timing > Video framerate.

4 (edited by purk_7 2018-Jul-03 10:31:54)

Re: Logitech BRIO 4K Webcam

I also bought a Brio for use with Kinovea.
My problem is that my system is too old. I upgraded it with a ASMedia USB 3 expension, but that doesn;t work.
Now it is connected by USB 2 , but i cannot get FPS higer then 30 fps to work.

So now i am thinking about upgrading the system to something with native USB 3 support, so the Brio will deliver the best.

But i also am thinking of trying an Elgato capture card and use a videocamera HDMI output.

Edit: I use the system for threadmill gait analysis.

Re: Logitech BRIO 4K Webcam

joan wrote:

Thanks for testing!

The recording should happen at 120 fps in the sense that all the 120 frames are put into the file per second, however the final video file is marked as 30 fps for replayability purpose. So the final file should look slowed down four times if you play it at 1x speed. This is triggered for any camera feed above 100fps.

There is no setting to change this at the moment. Although you could force it back to 120fps upon reopening by going to Video > Configure video timing > Video framerate.

the brio is working great. the recording was four times slow as you said.

thanks for putting the live delay back in for us.