ffmpeg +播放视频循环

Question

Does anyone know how to make a video using ffmpeg + Opengl play continuously?. Because this is only played once

tiempo = glfwGetTime();
duracion = 1.0/25.0; // 1 second / 25 fps

while(1){

...        

  if(glfwGetTime() > tiempo + duracion){
    if(av_read_frame(pFormatCtx,&packet) >= 0){
      if(packet.stream_index == 0){
        avcodec_decode_video2(pCodecCtx,pFrame,&frameFin,&packet);
        if(frameFin)sws_scale(img_convert_ctx,pFrame->data,pFrame->linesize,0,pCodecCtx->height,pFrameRGB->data,pFrameRGB->linesize);
      }
      av_free_packet(&packet);
    }
    tiempo += duracion;
  }

...

}

I know av_read_frame function (...) returns 0 if the end of file. But how do I make the function again returns a value other than zero? o How I can I make the video is constantly repeated?

Answer 1

From documentqtion lavf_decoding.html#ga4fdb3084415a82e3810de6ee60e46a61">http://ffmpeg.org/doxygen/trunk/group_ lavf _decoding.html#ga4fdb3084415a82e3810de6ee60e46a61

0 if OK, < 0 on error or end of file

so if <0 then call av_seek_frame

to return to start (same doc)