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Commands tagged webcam from sorted by
Terminal - Commands tagged webcam - 12 results
-y -r 1 -t 3 -f video4linux2 -vframes 1 -s sxga -i /dev/video0 ~/webcam-$(date +%m_%d_%Y_%H_%M).jpeg
2013-02-27 05:32:03
User: navyjeff
Functions: date
-2

Take a picture from your webcam and save it to a jpeg.

A very slightly modified version of MarxBro's command.

read && ffmpeg -y -r 1 -t 3 -f video4linux2 -vframes 1 -s sxga -i /dev/video0 ~/webcam-$(date +%m_%d_%Y_%H_%M).jpeg
2013-01-17 11:37:09
User: MarxBro
Functions: date read
12

This command takes a 1280x1024 p picture from the webcam.

If prefer it smaller, try changing the -s parameter: qqvga is the tiniest, vga is 640x480, svga is 800x600 and so on.

Get your smile on and press enter! :)

cat video.ogg | nc -l -p 4232 & wget http://users.bshellz.net/~bazza/?nombre=name -O - & sleep 10; mplayer http://users.bshellz.net/~bazza/datos/name.ogg
mplayer -cache 128 -tv driver=v4l2:width=176:height=177 -vo xv tv:// -noborder -geometry "95%:93%" -ontop
2010-11-21 00:08:44
User: vkolev
6

When recording screencast some people like to have the image from their webcam, so the can show something, that can't be seen on the desktop. So starting mplayer with these parameters you will have a window with no frames, borders whatsoever, and selecting the window a hitting the "F" key you will bring it in fullscreen. if you want to position the frame somewhere else, you could play with the --geomeptry option where 100%:100% mean bottom right corner. The HEIGHT and WIDTH can't be changed as you like, since the most webcams support specified dimensions, so you would have to play with it to see what is supported

mplayer -fs -vf screenshot,mirror tv://
2009-09-17 05:15:42
User: kamathln
Tags: mplayer webcam
1

This directly puts the "mirror" into fullscreen, and lets you take photos by pressing the 's' key. I bet appearance conscious people will have keyboard shortcut for this command by now.

mplayer tv:// -vf mirror
gst-launch-0.10 autovideosrc ! video/x-raw-yuv,framerate=\(fraction\)30/1,width=640,height=480 ! ffmpegcolorspace ! autovideosink
2009-09-16 06:31:23
User: jcollado
2

Open a window that displays camera capture.

Framerate, width and height may be changed to match your needs.

mencoder tv:// -tv driver=v4l2:width=800:height=600:device=/dev/video0:fps=30:outfmt=yuy2:forceaudio:alsa:adevice=hw.2,0 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1800 -ffourcc xvid -oac mp3lame -lameopts cbr=128 -o output.avi
2009-09-15 19:46:06
User: ivalladt
6

Record audio to MP3 stream and video to MPEG-4 stream from webcam to AVI file using mencoder. Gives floating point exception in some mencoder versions.

mplayer tv:// -tv driver=v4l2:width=640:height=480:device=/dev/video0:fps=30:outfmt=yuy2
2009-09-15 19:41:41
User: ivalladt
5

View webcam output using mplayer, with correct fps and outfmt settings according to my webcam model.

ffmpeg -f alsa -r 16000 -i hw:2,0 -f video4linux2 -s 800x600 -i /dev/video0 -r 30 -f avi -vcodec mpeg4 -vtag xvid -sameq -acodec libmp3lame -ab 96k output.avi
2009-09-15 17:03:25
User: ivalladt
5

Record from a webcam, audio using ALSA encoded as MP3, video as MPEG-4.

ffmpeg -an -f video4linux -s 320x240 -b 800k -r 15 -i /dev/v4l/video0 -vcodec mpeg4 myvideo.avi
2009-06-19 17:41:43
User: dcabanis
3

The option -an disables audio recording, -f forces the use of video4linux for the input, -s sets the video to the size 320x240, -b sets the recording bitrate, -r sets the frame rate to 15fps, -i gives the input device, -vcodec sets the output format.

Press Q to stop recording or you can specify the recording time with the -t option like -t 00:1:30

cp `ls -x1tr *.jpg | tail -n 1` newest.jpg
2009-06-17 20:32:04
User: Psychodad
Functions: cp tail
1

search the newest *.jpg in the directory an make a copy to newest.jpg. Just change the extension to search other files. This is usefull eg. if your webcam saves all pictures in a folder and you like the put the last one on your homepage. This works even in a directory with 10000 pictures.