R-KOM and the University of Applied Science (Fachhochschule, FH) Regensburg, Germany,
took their share of the Regensburg city marathon by putting an individual video
and image of each runner reaching the goal on the Internet. A cluster of 45 machines
rendered the more than five thousand videos. The paper discusses the technical
setup and execution of a video rendering cluster based on Open Source software.
First, deployment of the cluster clients is discussed, followed by computing steps
performed by the cluster splitting a big video stream into single images
and rendering individual videos from the images. Details are given on the hardware
and software used as well as optimizations made. Various experiences gained by
the cluster project are listed before showing some performance graphs displaying
the cluster under load. Lists of facts, numbers and links sum up the whole project.