I've tried everything in
apt-cache search webcam |sort -u
and everything has some problem. Correcting any syntax mistakes, showing how to use a "GUI only" from the CLI or a good ffmpeg/mencoder/vlc one-liner would answer my question. Or since I know how to make ffmpeg take a short MJPEG, showing how to strip off the first jpeg would work, I guess. Still, this ought to be more straightforward than that.
$ camgrab /dev/video0: no v4l device
(camgrab probably doesn't handle v4l2)
$ fswebcam --list-inputs --- Opening /dev/video0... Trying source module v4l2... /dev/video0 opened. --- Available inputs: 0: Camera 1 No input was specified, using the first. Adjusting resolution from 384x288 to 352x288. --- Capturing frame... Premature end of JPEG file Captured frame in 0.00 seconds. --- Processing captured image... There are unsaved changes to the image. $ fswebcam --input 0 boo.jpg --- Opening /dev/video0... Trying source module v4l2... /dev/video0 opened.jjjjjjjjj Adjusting resolution from 384x288 to 352x288. --- Capturing frame... Premature end of JPEG file Captured frame in 0.00 seconds. --- Processing captured image... Writing JPEG image to 'boo.jpg'.
is beyond me.
$ uvccapture -oboo.jpg $ file boo.jpg boo.jpg: data $ qiv -t boo.jpg Unable to read file: Failed to load image 'boo.jpg': Error interpreting JPEG image file (Not a JPEG file: starts with 0x8f 0x5a)
not really an image.
$ /usr/bin/vgrabbj -d /dev/video0 -f boo.jpg Could not open configfile /usr/etc/vgrabbj.conf, ignoring Reading image from /dev/video0
$ webcamd RTFM, missing template (/home/$USER/.webcamd/index_up.html) $ man webcamd |cat WEBCAMD(1) WEBCAMD(1) NAME webcamd - Take a image from your webcam SYNOPSIS webcamd [ start | stop | refresh ] DESCRIPTION This manual page documents briefly the webcamd daemon. This manual page was written for the Debian distribution because the original pro‐ gram does not have a manual page. webcamd is a program that take images from your webcam and put it on a ftp server on a local (web) directory OPTIONS start Start the daemon. stop Stop the daemon. refresh Take a shot ! AUTHOR This manual page was written by Julien Danjou <email@example.com> for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. 2002 april 21 WEBCAMD(1) $ webcamd start RTFM, missing template (/home/$USER/.webcamd/index_up.html) $ webcamd refresh RTFM, missing template (/home/$USER/.webcamd/index_up.html)
webcam seems to demand that I set a config file to ftp the images somewhere and seems to do nothing by default
$ /usr/bin/webcam reading config file: /home/$USER/.webcamrc video4linux webcam v1.5 - (c) 1998-2002 Gerd Knorr grabber config: size 320x240 [none] input (null), norm (null), jpeg quality 75 rotate=0, top=0, left=0, bottom=240, right=320
- GUI only