video 4 linux 2 notes
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Revision as of 15:23, 10 June 2011 by Root (talk | contribs) (Created page with 'Category:Engineering = V4L2 -- Video For Linux Version Two = == UVC == For a list of cameras that support UVC see the official [http://www.ideasonboard.org/uvc/ Linux UV…')
V4L2 -- Video For Linux Version Two
UVC
For a list of cameras that support UVC see the official Linux UVC site. Full UVC support in Linux:
I have been using a Logitech HD Pro Webcam C910, USB Device ID: 046d:0821, for my tests.
Gstreamer
Gstreamer is fast replacing all my other command-line tools for handling video.
1920x1080: This will have a low frame-rate since it will essentially max-out the USB bandwidth. It's useful for capturing individual frames without compression.
gst-launch v4l2src device=/dev/video0 ! 'video/x-raw-yuv,width=1920,height=1080' ! xvimagesink
This will capture at a higher framerate, but it will undersample the pixels so you will get an effective 320x240 resolution.
gst-launch v4l2src device=/dev/video0 ! 'video/x-raw-yuv,width=640,height=480,framerate=60/1' ! xvimagesink
