Dynamically adapting media content streaming and playback parameters for existing streaming and playback conditions

Adjusting media streaming parameters of a media streaming device and media playback parameters of a media playback device is disclosed. In one embodiment, the system probes a network infrastructure to determine a network type, a playback device type, a streaming device type, a media content type, a preroll duration, and a playback device buffer size. Based upon these streaming and playback conditions, values of streaming parameters of a streaming device and values of playback parameters of a playback device are determined. Streaming parameters include the aggressiveness of the network transmitter, the slope of the transmit rate ramp-up, and the maximum transmit rate. Playback parameters include the amount of data prerolled by the playback device. The aforementioned values are sent to streaming and playback device control systems to control the streaming and the playback of the media, during and/or before playback.