UVCCAPTURE(1) General Commands Manual UVCCAPTURE(1)NAME
uvccapture - USB UVC Video Class snapshot software
SYNOPSIS
uvccapture [options]
DESCRIPTION
This manual page documents briefly the uvccapture command.
The purpose of uvccapture is to capture an image from a USB webcam at a specified interval, and save it to a JPEG file, no other formats
are supported, imagemagick can handle anything else you might need.
OPTIONS
A summary of options is included below.
-h Show summary of options.
-v Verbose output.
-o<filename>
Output filename (default is snap.jpg)
-d<device>
V4L2 Device (default is /dev/video0)
-x<width>
Image Width (must be supported by device) (>960 activates YUYV capture)
-y<height>
Image Height (must be supported by device) (>720 activates YUYV capture)
-c<command>
Command to run after each image capture (executed as <command> <output_filename>)
-t<integer>
Take continuous shots with <integer> seconds between them (0 for single shot)
-q<percentage>
JPEG Quality Compression Level (activates YUYV capture)
-r Use read instead of mmap for image capture
-w Wait for capture command to finish before starting next capture
-m Toggles capture mode to YUYV capture
-B<integer>
Brightness
-C<integer>
Contrast
-S<integer>
Saturation
SEE ALSO
http://linux-uvc.berlios.de/
AUTHOR
uvccapture was written by Gabriel A. Devenyi <ace@staticwave.ca>. This software is based of the package luvcview by Laurent Pinchart and
Michel Xhaard.
This manual page was written by Krzysztof Burghardt <krzysztof@burghardt.pl>, for the Debian project (but may be used by others).
28th March, 2008 UVCCAPTURE(1)
Check Out this Related Man Page
SCREENCAPTURE(1) BSD General Commands Manual SCREENCAPTURE(1)NAME
screencapture -- capture images from the screen and save them to a file or the clipboard
SYNOPSIS
screencapture [-SWCTMPcimswxto] file
DESCRIPTION
The screencapture utility is not very well documented to date. A list of options follows.
-c Force screen capture to go to the clipboard.
-b Capture Touch Bar, only works in non-interactive modes.
-C Capture the cursor as well as the screen. Only allowed in non-interactive modes.
-d Display errors to the user graphically.
-i Capture screen interactively, by selection or window. The control key will cause the screen shot to go to the clipboard. The space
key will toggle between mouse selection and window selection modes. The escape key will cancel the interactive screen shot.
-m Only capture the main monitor, undefined if -i is set.
-D <display> Screen capture or record from the display specified. 1 is main, 2 secondary, etc
-o In window capture mode, do not capture the shadow of the window.
-p Screen capture will use the default settings for capture. The files argument will be ignored.
-M Open the taken picture in a new Mail message.
-P Open the taken picture in a Preview window or QuickTime Player if video.
-I Open the taken picture in Mesages.
-B <bundleid> Open in the app matching bundleid.
-s Only allow mouse selection mode.
-S In window capture mode, capture the screen instead of the window.
-J <style> Sets the starting style of interfactive capture "selection","window","video".
-t <format> Image format to create, default is png (other options include pdf, jpg, tiff and other formats).
-T <seconds> Take the picture after a delay of <seconds>, default is 5.
-w Only allow window selection mode.
-W Start interaction in window selection mode.
-x Do not play sounds.
-a Do not capture attached windows.
-r Do not add screen dpi meta data to captured file.
-l <windowid> Captures the window with windowid.
-R <rectangle> Capture rectangle using format x,y,width,height.
-v Capture video recording of the screen.
-V <seconds> Capture video recording of the screen for the specified seconds.
-A <id> Captures audio during a video recording using default input. Optionally pass id of the audio source.
-k Show clicks in video recordings.
-U Show interactive toolbar in interactive mode.
-u Present UI after screencapture is complete. Files passed to commandline will be ignored.
files where to save the screen capture, 1 file per screen
BUGS
Better documentation is needed for this utility.
SECURITY CONSIDERATIONS
To capture screen content while logged in via ssh, you must launch screencapture in the same mach bootstrap hierarchy as loginwindow:
PID=pid of loginwindow
sudo launchctl bsexec $PID screencapture [options]
HISTORY
A screencapture utility first appeared in Mac OS X v10.2.
Mac OS June 16, 2004 Mac OS