Data transmission method and system based on hybrid automatic repeat request

The embodiment of the invention discloses a data transmission method and system based on a hybrid automatic repeat request, data transmission equipment based on the hybrid automatic repeat request and a storage medium. According to the technical scheme provided by the embodiment of the invention, network parameters of a current video data transmission network are acquired; under the condition of determining that the current video data transmission network has continuous packet loss, calculating target transmission time and maximum available transmission time required for retransmission of packet loss data by the current video data transmission network based on the network parameters; and under the condition that the target transmission time exceeds the maximum available transmission time, performing video data transmission based on a forward error correction algorithm. By the adoption of the technical means, accurate starting of the forward error correction algorithm can be achieved, data transmission resourc