Effecting the transmission of video data across a network of resources that includes incompatible resources is disclosed. Information indicating a source device and a destination device is received. The source device originates the video data and the destination device is to receive the video data. A plurality of paths between the source device and the destination device is identified. Each path is defined by a set of resources, the set of resources including resources needed to transmit the video data across any incompatible resources in the path. From the plurality of paths, a best path for transmission of the video data is determined based on the set of resources for that path, a distance between the source device and the destination device along that path, and a quality of the video data maintained by that path. The transmission of the video data is then effected across the determined best path.