way to start and stop RabbitMQ mannually

view story

http://serverfault.com – I have installed RabbitMQ/Celery on Ubuntu for queuing of videos for Video conversion server which will start and shut down based upon the queue of videos i.e Start - As soon as a video is uploaded for the conversion Shut - As soon as all videos in queue are completed and done with. Is there way to achieve this? (HowTos)