How to capture a picture from the webcam?

[slopjong]

• How to capture picture from V4L2 webcam?
• camshot
• fswebcam
• cheese (has gnome requirements)
• VLC silent capture of video or snapshots from a webcam
• Take picture from webcam using linux command line (bash)
• Ubuntu: webcam
• webcam-xlib-shm.c

MPlayer:

• mplayer tv:// -tv driver=v4l2:device=/dev/video0 -vo png -frames 1
• mplayer -really-quiet -vo png:outdir=/tmp/slock/spy.png -frames 1 tv://

MPlayer is not reliable. It makes trouble with some webcams e.g. the Syntek AVStream USB2.0 1.3M WebCam - Product ID 0x6A33.

Handling jpeg:

• Very Simple JPEG writer in C/C++
• load jpeg