ffmpeg将RTSP传输的h264原始码流保存到文件中

#include "ffmpeg.h" static AVFormatContext *i_fmt_ctx; static AVStream *i_video_stream; static AVFormatContext *o_fmt_ctx; static AVStream *o_video_stream; static bool bStop = false; static unsigned __stdcall rtsp2mp4(void *pThis) { avcodec_register_all(); av_register_all(); avformat_network_init(); i_fmt_ctx = NULL; char rtspUrl[] = "rtsp://192.168.0.14:554/user=admin&password=admin123&channel=1&stream=0.sdp?real_stream"; const char *filename = "demo.h264"; if (avformat_open_input(&i_fmt_ctx,rtspUrl,NULL,NULL)!=0) // { fprintf(stderr,"could not open input file\n"); return -1; } if (avformat_find_stream_info(i_fmt_ctx,NULL)<0) { fprintf(stderr,"could not find stream info\n"); return -1; } for (unsigned i=0; i<i_fmt_ctx->nb_streams; i++) { if (i_fmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { i_video_stream = i_fmt_ctx->streams[i]; break; } } if (i_video_stream == NULL) { fprintf(stderr, "didn't find any video stream\n"); return -1; } avformat_alloc_output_context2(&o_fmt_ctx,NULL,NULL,filename); o_video_stream = avformat_new_stream(o_fmt_ctx,NULL); { AVCodecContext *c; c = o_video_stream->codec; c->bit_rate = 400000; c->codec_id = i_video_stream->codec->codec_id; c->codec_type = i_video_stream->codec->codec_type; c->time_base.num = i_video_stream->time_base.num; c->time_base.den = i_video_stream->time_base.den; fprintf(stderr, "time_base.num = %d time_base.den = %d\n", c->time_base.num, c->time_base.den); c->width = i_video_stream->codec->width; c->height = i_video_stream->codec->height; c->pix_fmt = i_video_stream->codec->pix_fmt; printf("%d %d %d", c->width, c->height, c->pix_fmt); c->flags = i_video_stream->codec->flags; c->flags |= CODEC_FLAG_GLOBAL_HEADER; c->me_range = i_video_stream->codec->me_range; c->max_qdiff = i_video_stream->codec->max_qdiff; c->qmin = i_video_stream->codec->qmin; c->qmax = i_video_stream->codec->qmax; c->qcompress = i_video_stream->codec->qcompress; } avio_open(&o_fmt_ctx->pb,filename,AVIO_FLAG_WRITE); avformat_write_header(o_fmt_ctx,NULL); int last_pts = 0; int last_dts = 0; int64_t pts,dts; while (!bStop) { AVPacket i_pkt; av_init_packet(&i_pkt); i_pkt.size = 0; i_pkt.data = NULL; if (av_read_frame(i_fmt_ctx,&i_pkt) < 0) break; i_pkt.flags |= AV_PKT_FLAG_KEY; pts = i_pkt.pts; i_pkt.pts += last_pts; dts = i_pkt.dts; i_pkt.dts += last_dts; i_pkt.stream_index = 0; static int num = 1; printf("frame %d\n",num++); av_interleaved_write_frame(o_fmt_ctx,&i_pkt); Sleep(10); } last_dts += dts; last_pts += pts; avformat_close_input(&i_fmt_ctx); av_write_trailer(o_fmt_ctx); avcodec_close(o_fmt_ctx->streams[0]->codec); av_freep(&o_fmt_ctx->streams[0]->codec); av_freep(&o_fmt_ctx->streams[0]); avio_close(o_fmt_ctx->pb); av_free(o_fmt_ctx); return 0; } int main(int argc, char **argv) { bStop = false; HANDLE hth; unsigned uiThreadID; hth = (HANDLE)_beginthreadex(NULL,0,rtsp2mp4,NULL,0,&uiThreadID); if (hth == 0) { printf("Failed to create thread\n"); return -1; } printf("按任意键停止录像\n"); getchar(); bStop = true; printf("按任意键退出\n"); getchar(); return 0; }