Fotografiar con gstreamer

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! pngenc ! filesink location=mifoto.png

gst-launch-0.10 v4l2src ! jpegenc ! filesink location=foo.jpg

gst-launch-0.10 v4l2src ! ffmpegcolorspace ! jpegenc ! filesink location=foo.jpg