ffmpeg超时设置

1.rtsp超时

AVDictionary* opts = NULL;

av_dict_set(&opts, "rtsp_transport", "tcp"); //设置tcp
av_dict_set(&opts, "rtsp_transport", "udp"); //设置udp
av_dict_set(&opts, "stimeout", "5000000", 0);//设置超时5秒
int ret = avformat_open_input(&ctx, url, NULL, &opts);

2.设置udp,http超时

AVDictionary* opts = NULL;
av_dict_set(&opts, "timeout", "5000000", 0);//设置超时5秒
int ret = avformat_open_input(&ctx, url, NULL, &opts);

3.设置av_read_frame 超时

auto ctx = avformat_alloc_context();
ctx->interrupt_callback.callback = Check;//设置超时回调
ctx->interrupt_callback.opaque = this;
m_tStart = time(NULL);
av_read_frame(ctx, &pkt);

//超时回调函数

static int Check(void* ctx)
{
　　auto p = (xxx*)ctx;
　　return time(NULL) -  p->m_tStart >= 5 ? 1 : 0;//5秒超时
}