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#include <stdio.h>
#include "libavformat/avformat.h"
 
static const char *media_file = "11.mp4";
int main(void)
{
    int i, vid_idx, aud_idx;
    FILE *fp_vides = NULL, *fp_audes = NULL;
    AVFormatContext *pFormatCtx = NULL;
    AVPacket pkt;
 
    av_register_all();
    avformat_open_input(&pFormatCtx, media_file, NULL, NULL);
    avformat_find_stream_info(pFormatCtx, NULL);
 
    fp_vides = fopen("vid_es.dat", "wb");
    fp_audes = fopen("aud_es.dat", "wb");
    // 1, handle stream info
    for (i=0; i<pFormatCtx->nb_streams; i++)
    {
        if (pFormatCtx->streams[i]->codec->codec_type ==AVMEDIA_TYPE_VIDEO)
            vid_idx = i;
        else if (pFormatCtx->streams[i]->codec->codec_type ==AVMEDIA_TYPE_AUDIO)
            aud_idx = i;
        else
            ;//such as subtitile
    }
    while (av_read_frame(pFormatCtx, &pkt) >= 0)
    {
        // 2, handle pkt data
        if (pkt.stream_index == vid_idx)
            fwrite(pkt.data, pkt.size, 1, fp_vides);
        else if (pkt.stream_index == aud_idx)
            fwrite(pkt.data, pkt.size, 1, fp_audes);
        else
            ;// such as subtitile
        av_free_packet(&pkt);
    }
    fclose(fp_vides);
    fclose(fp_audes);
    avformat_close_input(&pFormatCtx);
    return 0;
}