static void print_report(int is_last_report, int64_t timer_start)

{

    char buf[1024];

    OutputStream *ost;

    AVFormatContext *oc;

    int64_t total_size;

    AVCodecContext *enc;

    int frame_number, vid, i;

    double bitrate, ti1, pts;

    static int64_t last_time = -1;

    static int qp_histogram[52];



    if (!print_stats && !is_last_report)

        return;



    if (!is_last_report) {

        int64_t cur_time;

        

        cur_time = av_gettime();

        if (last_time == -1) {

            last_time = cur_time;

            return;

        }

        if ((cur_time - last_time) < 500000)

            return;

        last_time = cur_time;

    }





    oc = output_files[0]->ctx;



    total_size = avio_size(oc->pb);

    if (total_size <= 0) 

        total_size = avio_tell(oc->pb);

    if (total_size < 0) {

        char errbuf[128];

        av_strerror(total_size, errbuf, sizeof(errbuf));

        av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "

               "avio_tell() failed: %s\n", errbuf);

        total_size = 0;

    }



    buf[0] = '\0';

    ti1 = 1e10;

    vid = 0;

    for (i = 0; i < nb_output_streams; i++) {

        float q = -1;

        ost = output_streams[i];

        enc = ost->st->codec;

        if (!ost->stream_copy && enc->coded_frame)

            q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;

        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {

            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);

        }

        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {

            float t = (av_gettime() - timer_start) / 1000000.0;



            frame_number = ost->frame_number;

            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",

                     frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);

            if (is_last_report)

                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");

            if (qp_hist) {

                int j;

                int qp = lrintf(q);

                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))

                    qp_histogram[qp]++;

                for (j = 0; j < 32; j++)

                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));

            }

            if (enc->flags&CODEC_FLAG_PSNR) {

                int j;

                double error, error_sum = 0;

                double scale, scale_sum = 0;

                char type[3] = { 'Y','U','V' };

                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");

                for (j = 0; j < 3; j++) {

                    if (is_last_report) {

                        error = enc->error[j];

                        scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;

                    } else {

                        error = enc->coded_frame->error[j];

                        scale = enc->width * enc->height * 255.0 * 255.0;

                    }

                    if (j)

                        scale /= 4;

                    error_sum += error;

                    scale_sum += scale;

                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));

                }

                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));

            }

            vid = 1;

        }

        

        pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);

        if ((pts < ti1) && (pts > 0))

            ti1 = pts;

    }

    if (ti1 < 0.01)

        ti1 = 0.01;



    bitrate = (double)(total_size * 8) / ti1 / 1000.0;



    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),

            "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",

            (double)total_size / 1024, ti1, bitrate);



    if (nb_frames_dup || nb_frames_drop)

        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",

                nb_frames_dup, nb_frames_drop);



    av_log(NULL, AV_LOG_INFO, "%s    \r", buf);



    fflush(stderr);



    if (is_last_report) {

        int64_t raw= audio_size + video_size + extra_size;

        av_log(NULL, AV_LOG_INFO, "\n");

        av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",

               video_size / 1024.0,

               audio_size / 1024.0,

               extra_size / 1024.0,

               100.0 * (total_size - raw) / raw

        );

    }

}
