I am using the following command to capture and write jpegs to a tmp directory which end up getting streamed over the network
raspistill -w 640 -h 480 -q 5 -o /tmp/stream/pic.jpg -tl 100 -t 9999999 -th 0:0:0 &
When I execute this command a large image preview comes up on screen which I cannot seem to dismiss without killing the raspistill process.
How can I use raspistill without showing the preview window?