Ticket #9356: ffmpeg_mpegts_infiniteloop.cpp

#include <fstream>
#include <time.h>
#include <string.h>

extern "C" {
        #include "libavformat/avformat.h"
        #include "libavutil/avutil.h"

}

using namespace std;

std::ofstream logfile;

string Log(string msg) {
        char tmpbuf[128];
        _strtime_s(tmpbuf, 128);
        string tmpstr(tmpbuf);

        return "[" + tmpstr + "]: " + msg;
}

void FFmpegLog(void * ptr, int level, const char* fmt, va_list valist) {
        char buffer[10 * 1024];
        int prefix = 1;
        av_log_format_line2(ptr, level, fmt, valist, buffer, 10 * 1024, &prefix);
        logfile << Log(buffer);
}

int main()
{
        int ret;
        logfile.open("log.txt", ios_base::app);
        logfile << "\r\n============================================[STARTED]===================================================\r\n";

        av_log_set_level(AV_LOG_INFO);
        av_log_set_callback(FFmpegLog);

        AVFormatContext* fmtCtx = avformat_alloc_context();

        AVDictionary* opt = NULL;
        av_dict_set(&opt, "resync_size", "0", 0);
        ret = avformat_open_input(&fmtCtx, "https://cph-p2p-msl.akamaized.net/hls/live/2000341/test/level_3.m3u8", NULL, &opt);
        if (ret < 0) { logfile << Log("Error avformat_open_input " + ret + '\r\n'); return -1; }

        ret = avformat_find_stream_info(fmtCtx, NULL);
        if (ret < 0) { logfile << Log("Error avformat_find_stream_info " + ret + '\r\n'); return -1; }

        for (int i = 0; i < fmtCtx->nb_streams; i++)
                fmtCtx->streams[i]->discard = AVDISCARD_ALL;

        fmtCtx->streams[0]->discard = AVDISCARD_DEFAULT;

        fmtCtx->ctx_flags &= ~AVFMTCTX_UNSEEKABLE;
        //ret = av_seek_frame(fmtCtx, -1, fmtCtx->start_time + (6 * 1000 * 1000), 0); // SUCCESS
        ret = av_seek_frame(fmtCtx, -1, fmtCtx->start_time + (60 * 1000 * 1000), 0); // FAIL (Infinite loop)
        if (ret < 0) { logfile << Log("Error av_seek_frame " + ret + '\r\n'); return -1; }

        AVPacket* packet = av_packet_alloc();
        ret = av_read_frame(fmtCtx, packet);
        if (ret < 0) { logfile << Log("Error av_read_frame " + ret + '\r\n'); return -1; }
        av_packet_free(&packet);

        logfile << "\r\n=============================================[ENDED]====================================================\r\n";
}