Automatic Video segmenting

I am looking for someone to develop a clone of mysports dot tv technology The way the technology works is it takes videos of a marathon race from various points on the course. The cameras are placed at the same points as the timers split times eg 10km, 20km, 30km, finish. At the end of the race the results are provided by the timing team with the split and finish times for each runner. A runner is then able to go online, type in his name or number and see the video clip of himself at each split and the finish. The video shows 10 seconds before and 10 seconds after the running passing each split marker. The technology that I require is for someone to develop an application which will query each video to produce a 20 second clip for each camera. These clips are converted to flv and played together So to summarise I am looking for someone with experience of writing programs which query a video segment. I do not want any time wasters. Only reply if you have experience of working on similar technology in the past.