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UNIX for Dummies Questions & Answers
mplayer snapshots
Post 302442561 by slak0 on Wednesday 4th of August 2010 06:23:47 PM
08-04-2010
mplayer snapshots
I have a script with:
mplayer tv:// -tv driver=v4l2:device=/dev/video0:width=320:height=240:norm=NTSC:fps=30:noaudio:input=0 -vf screenshot -aspect 4:3 -vo xv
to take .png screenshots.
It now works but am not getting what the webcam sees displayed in the frame -- just snow noise.
Does someone see what I added (I don't do that <)
) or need to add to correct this issue?
mplayer tv:// -tv driver=v4l2:device=/dev/video0:width=320:height=240:norm=NTSC:fps=30:noaudio:input=0 -vf screenshot -aspect 4:3 -vo xv
to take .png screenshots.
It now works but am not getting what the webcam sees displayed in the frame -- just snow noise.
Does someone see what I added (I don't do that <)
) or need to add to correct this issue?|
|
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LEARN ABOUT DEBIAN
fbgrab
FBGRAB(1) fbgrab manual FBGRAB(1) NAME
fbgrab - takes a screenshot using the framebuffer device SYNOPSIS
fbgrab [option...] png-file fbgrab -? DESCRIPTION
fbgrab is a wrapper around fbcat which emulates the behaviour of Gunnar Monell's fbgrab utility. OPTIONS
fbgrab accepts the following options: -c N Grab the /dev/ttyN virtual terminal. Note This option might require root privileges (or CAP_SYS_TTY_CONFIG capability). -C N Switch to the /dev/ttyN virtual terminal, then wait a few seconds before grabbing it. Note This option might require root privileges (or CAP_SYS_TTY_CONFIG capability). -d fb-device Use the fb-device framebuffer device. By default, the device name is taken from the FRAMEBUFFER environment variable. If it is unset or empty, the default is /dev/fb0. -i Enable PNG interlacing. -s N Sleep N seconds before making the screenshot or switching virtual terminals. -? Display help and exit. UNSUPPORTED OPTIONS
The following options of Gunnar Monell's fbgrab are recognized but not supported: -f fb-dump-file -b N -w N -h N SEE ALSO
png(5), fbcat(1) COPYRIGHT
Copyright (C) 2009, 2011 Jakub Wilk fbgrab 0.3 05/14/2012 FBGRAB(1)