adding video decoder

Decoder/extractVideo.sh

@@ -0,0 +1,12 @@
+#/bin/bash
+echo extracting frames
+ffmpeg -loglevel 24 -stats -i input.mp4 /tmp/$$.out%05d.png 
+echo done, processing frames
+ls /tmp/$$.out*.png | while read f;do
+dta=$(zbarimg -q --raw --nodbus ${f})
+chunkNum=${dta/|*/}
+chunkData=${dta/*|/}
+echo from ${f} received: ${chunkNum} 
+echo $chunkData | base64 -d > chunks/${chunkNum}.chunk
+done
+