Taking into account that the network bandwidth has limitation

instability and "making the best" service

it proposes a novel adaptive transmission scheme named GAIMD_Buffer to ensure QoS of video transmission. Based on GAIMD algorithm

the scheme introduces a buffer control strategy of H.264 video streaming for both servers and clients. When the network is in a stable or congested state

and the estimated value of the buffer occupancy is within the given threshold in the next RTT as well

the speed of transmission is adjusted by GAIMD algorithm; otherwise

the stability of the buffer can only be ensured by adjusting the video code rate

which ensures the buffer will not overflow or underflow. Experimental results demonstrate that the proposed scheme works well in the embedded system

which shows more effective smooth jitter

less packet loss and play latency

and improves video quality accordingly.