Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Hdmi video grabber and FPS #150

Open
jjsarton opened this issue Aug 27, 2022 · 0 comments
Open

Hdmi video grabber and FPS #150

jjsarton opened this issue Aug 27, 2022 · 0 comments

Comments

@jjsarton
Copy link

I have attached the hdmi output from a camera via a hdmi-graber.
If I issue:

v4l2-ctl --list-formats-ext -d 2 # the hdmi graber capture device

I get for example:

ioctl: VIDIOC_ENUM_FMT
	Type: Video Capture

	[0]: 'MJPG' (Motion-JPEG, compressed)
		Size: Discrete 1920x1080
			Interval: Discrete 0.020s (50.000 fps)
	[1]: 'YUYV' (YUYV 4:2:2)
		Size: Discrete 1920x1080
			Interval: Discrete 0.020s (50.000 fps)

Launching backscrup:

backscrub -b img.jpg --og 640x360 -c /dev/video2 -v /dev/video10 -d -d

The FPS stated withing the gui windows is around 140 FPS. The FPS stated within the command line is around 40 FPS.
The loopback device, according to v24l2 has an FPS of 30.
Cheese and meet.jit.si and also other WebRTC systems open via Browser (Firefox/Chromium) all is okay

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant