1. #include <stdio.h>
    2. #include <conio.h>
    4. #define __STDC_CONSTANT_MACROS
    6. #ifdef _WIN32
    7. extern "C"{
    8. #include "libavformat/avformat.h"
    9. };
    10. #else
    11. #ifdef __cplusplus
    12. extern "C"{
    13. #endif
    14. #include <libavformat/avformat.h>
    15. #ifdef __cplusplus
    16. };
    17. #endif
    18. #endif
    20. #define errReport(info, val) do{ \
    21.     fprintf(stderr, "ERR:: %s %s(line=%d) code=%d\n", __FUNCTION__, info,  __LINE__, val);\
    22.     getch(); exit(0);\
    23. }while (0);
    25. AVOutputFormat *ofmt_a = NULL, *ofmt_v = NULL;
    26. AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx_a = NULL, *ofmt_ctx_v = NULL;
    27. AVPacket pkt;
    28. int ret, i;
    29. int videoindex = -1, audioindex = -1;
    30. int frame_index = 0;
    32. const char *in_filename = "in.ts";
    33. const char *out_filename_v = "out.h264";
    34. const char *out_filename_a = "out.aac";
    36. int init_demuxer() {
    37.     av_register_all();
    38.     if (avformat_open_input(&ifmt_ctx, in_filename, 0, 0) < 0)
    39.         return -1;
    40.     if (avformat_find_stream_info(ifmt_ctx, 0) < 0)
    41.         return -2;
    42.     avformat_alloc_output_context2(&ofmt_ctx_v, NULL, NULL, out_filename_v);
    43.     if (!ofmt_ctx_v) return -3;
    44.     ofmt_v = ofmt_ctx_v->oformat;
    46.     avformat_alloc_output_context2(&ofmt_ctx_a, NULL, NULL, out_filename_a);
    47.     if (!ofmt_ctx_a) return -4;
    48.     ofmt_a = ofmt_ctx_a->oformat;
    50.     for (i = 0; i < ifmt_ctx->nb_streams; i++) {
    51.         AVFormatContext *ofmt_ctx;
    52.         AVStream *in_stream = ifmt_ctx->streams[i];
    53.         AVStream *out_stream = NULL;
    54.         if (ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
    55.             videoindex = i;
    56.             out_stream = avformat_new_stream(ofmt_ctx_v, in_stream->codec->codec);
    57.             ofmt_ctx = ofmt_ctx_v;
    58.         }
    59.         else if (ifmt_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
    60.             audioindex = i;
    61.             out_stream = avformat_new_stream(ofmt_ctx_a, in_stream->codec->codec);
    62.             ofmt_ctx = ofmt_ctx_a;
    63.         }
    64.         else {
    65.             break;
    66.         }
    67.         if (!out_stream) return -5;
    68.         if (avcodec_copy_context(out_stream->codec, in_stream->codec) < 0) 
    69.             return -6;
    70.         out_stream->codec->codec_tag = 0;
    71.         if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
    72.             out_stream->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
    73.     }
    74.     printf("================Input===============\n");
    75.     av_dump_format(ifmt_ctx, 0, in_filename, 0);
    76.     printf("================Output==============\n");
    77.     av_dump_format(ofmt_ctx_v, 0, out_filename_v, 1);
    78.     printf("++++++++++++++++++++++++++++++++++++\n");
    79.     av_dump_format(ofmt_ctx_a, 0, out_filename_a, 1);
    80.     printf("====================================\n");
    81.     if (!(ofmt_v->flags & AVFMT_NOFILE)) {
    82.         if (avio_open(&ofmt_ctx_v->pb, out_filename_v, AVIO_FLAG_WRITE) < 0) 
    83.             return -7;
    84.     }
    85.     if (!(ofmt_a->flags & AVFMT_NOFILE)) {
    86.         if (avio_open(&ofmt_ctx_a->pb, out_filename_a, AVIO_FLAG_WRITE) < 0) 
    87.             return -8;
    88.     }
    90.     if (avformat_write_header(ofmt_ctx_v, NULL) < 0) 
    91.         return -9;
    92.     if (avformat_write_header(ofmt_ctx_a, NULL) < 0)
    93.         return -10;
    94.     return 0;
    95. }
    97. int main(int argc, char* argv[]){
    99.     if ((ret = init_demuxer()) < 0)
    100.         errReport("init_demuxer", ret);
    101.     while (1) {
    102.         AVFormatContext *ofmt_ctx;
    103.         AVStream *in_stream, *out_stream;
    104.         if (av_read_frame(ifmt_ctx, &pkt) < 0)
    105.             break;
    106.         in_stream = ifmt_ctx->streams[pkt.stream_index];
    107.         if (pkt.stream_index == videoindex) {
    108.             out_stream = ofmt_ctx_v->streams[0];
    109.             ofmt_ctx = ofmt_ctx_v;
    110.             printf("\nv#s:%d\tp:%lld", pkt.size, pkt.pts);
    111.         }
    112.         else if (pkt.stream_index == audioindex) {
    113.             out_stream = ofmt_ctx_a->streams[0];
    114.             ofmt_ctx = ofmt_ctx_a;
    115.             printf("a#s:%d\tp:%lld", pkt.size, pkt.pts);
    116.         }
    117.         else {
    118.             continue;
    119.         }
    120.         pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, (AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
    121.         pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, (AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
    122.         pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
    123.         pkt.pos = -1;
    124.         pkt.stream_index = 0;
    126.         if (av_interleaved_write_frame(ofmt_ctx, &pkt) < 0) {
    127.             printf("Error muxing packet\n");
    128.             break;
    129.         }
    130.         //printf("Write %8d frames to output file\n",frame_index);
    131.         av_free_packet(&pkt);
    132.         frame_index++;
    133.     }
    134.     av_write_trailer(ofmt_ctx_a);
    135.     av_write_trailer(ofmt_ctx_v);
    136.     avformat_close_input(&ifmt_ctx);
    137.     if (ofmt_ctx_a && !(ofmt_a->flags & AVFMT_NOFILE))
    138.         avio_close(ofmt_ctx_a->pb);
    139.     if (ofmt_ctx_v && !(ofmt_v->flags & AVFMT_NOFILE))
    140.         avio_close(ofmt_ctx_v->pb);
    141.     avformat_free_context(ofmt_ctx_a);
    142.     avformat_free_context(ofmt_ctx_v);
    144.     if (ret < 0 && ret != AVERROR_EOF) {
    145.         printf("Error occurred.\n");
    146.         return -1;
    147.     }
    148.     printf("successed.\n");
    149.     getch();
    150.     return 0;
    151. }

    qrcode_for_gh_e95b474fcf08_344.jpg