Stream Gstreamer launch

stream.rb

#!/bin/ruby

## You can take pictures via Entangle, or in command line. 

require 'fileutils'
# First argument is starting number

name = "capture"
output_name = "playing/capture000000.jpg"

# start with zero, to take from input arguments
id = ARGV[0].to_i

## Start Gstreamer
pid = Process.fork do
  `gst-launch-0.10 multifilesrc location=playing/capture%06d.jpg start-index=0 stop-index=0 loop=true caps="image/jpeg,framerate=\(fraction\)1/1" ! jpegdec ! ffmpegcolorspace ! videorate ! v4l2sink device=/dev/video0`
end

file_name = name + id.to_s.rjust(6, "0") + ".jpg"
p file_name
p FileTest.exists? file_name

## update with the latest picture
while true do
  if FileTest.exists? file_name
    p "Putting image: " +  id.to_s
    FileUtils.cp file_name, output_name
    id = id +1
    file_name = name + id.to_s.rjust(6, "0") + ".jpg"
  end
  sleep 1
end


## Stream the video to V4L2:
# gphoto2 --stdout --capture-movie | gst-launch-0.10 fdsrc ! decodebin2 name=dec ! queue ! ffmpegcolorspace ! v4l2sink device=/dev/video0

## Stream x photos to V4L2
# gst-launch-0.10 multifilesrc location=capture%06d.jpg start-index=5 stop-index=18 loop=true caps=image/jpeg,framerate=\(fraction\)1/1 ! jpegdec ! ffmpegcolorspace ! videorate ! v4l2sink device=/dev/video0