In some embodiments, methods and apparatus are provided for transmitting, via at least one network, a request to another apparatus for still image data generated from moving image data, the request comprising at least one criterion, and receiving still image data generated from moving image data matching the at least one criterion in the request. In further embodiments, methods and apparatus are provided for receiving the request via at least one network, using the at least one criterion in the request to obtain still image data generated from moving image data, and responding to the request by transmitting the obtained still imagedata.