int nRecvBuf=1024*1024;//设置为1M
setsockopt(s32Sockfd,SOL_SOCKET,SO_RCVBUF,(const char*)&nRecvBuf,sizeof(int));
AVDictionary *dic = NULL;
av_dict_set(&dic, "buffer_size", "1024000", 0);
avformat_open_input(&ifmt_ctx, input_filename, NULL, &dic);
ffmpeg -buffer_size 1024000 –i udp://127.0.0.1:8888 xxx
注意:这里的 -buffer_size 1024000
需要放在-i前面,否则设置不生效。
原文:https://www.cnblogs.com/standardzero/p/12553207.html