The video teaching resource is an important part of the teaching resource library, and it is important to add video resources for the system platform. At present, the adding of video resources for many teaching resource libraries is done by hand, which is of low efficiency and produces heavy workload. By introducing the network crawler and using the extended function of Heritrix, the corresponding module was customized to make it automatically grasp course video resources from the network. And it could improve the video grasping efficiency and accuracy of the resource library by optimizing its grasping algorithm.