ffmpeg.c

{
    if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
        fprintf(stderr, "Incorrect frame size\n");
        exit(1);
    }
    if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
        fprintf(stderr, "Frame size must be a multiple of 2\n");
        exit(1);
    }
}


#define SCALEBITS 10
#define ONE_HALF  (1 << (SCALEBITS - 1))
#define FIX(x)	  ((int) ((x) * (1<<SCALEBITS) + 0.5))

#define RGB_TO_Y(r, g, b) \
((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
  FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)

#define RGB_TO_U(r1, g1, b1, shift)\
(((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +         \
     FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

#define RGB_TO_V(r1, g1, b1, shift)\
(((FIX(0.50000) * r1 - FIX(0.41869) * g1 -           \
   FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

static void opt_pad_color(const char *arg) {
    /* Input is expected to be six hex digits similar to
       how colors are expressed in html tags (but without the #) */
    int rgb = strtol(arg, NULL, 16);
    int r,g,b;
    
    r = (rgb >> 16); 
    g = ((rgb >> 8) & 255);
    b = (rgb & 255);

    padcolor[0] = RGB_TO_Y(r,g,b);
    padcolor[1] = RGB_TO_U(r,g,b,0);
    padcolor[2] = RGB_TO_V(r,g,b,0);
}

static void opt_frame_pad_top(const char *arg)
{
    frame_padtop = atoi(arg); 
    if (frame_padtop < 0) {
        fprintf(stderr, "Incorrect top pad size\n");
        exit(1);
    }
    if ((frame_padtop % 2) != 0) {
        fprintf(stderr, "Top pad size must be a multiple of 2\n");
        exit(1);
    }
}

static void opt_frame_pad_bottom(const char *arg)
{
    frame_padbottom = atoi(arg); 
    if (frame_padbottom < 0) {
        fprintf(stderr, "Incorrect bottom pad size\n");
        exit(1);
    }
    if ((frame_padbottom % 2) != 0) {
        fprintf(stderr, "Bottom pad size must be a multiple of 2\n");
        exit(1);
    }
}


static void opt_frame_pad_left(const char *arg)
{
    frame_padleft = atoi(arg); 
    if (frame_padleft < 0) {
        fprintf(stderr, "Incorrect left pad size\n");
        exit(1);
    }
    if ((frame_padleft % 2) != 0) {
        fprintf(stderr, "Left pad size must be a multiple of 2\n");
        exit(1);
    }
}


static void opt_frame_pad_right(const char *arg)
{
    frame_padright = atoi(arg); 
    if (frame_padright < 0) {
        fprintf(stderr, "Incorrect right pad size\n");
        exit(1);
    }
    if ((frame_padright % 2) != 0) {
        fprintf(stderr, "Right pad size must be a multiple of 2\n");
        exit(1);
    }
}


static void opt_frame_pix_fmt(const char *arg)
{
    frame_pix_fmt = avcodec_get_pix_fmt(arg);
}

static void opt_frame_aspect_ratio(const char *arg)
{
    int x = 0, y = 0;
    double ar = 0;
    const char *p;
    
    p = strchr(arg, ':');
    if (p) {
        x = strtol(arg, (char **)&arg, 10);
	if (arg == p)
	    y = strtol(arg+1, (char **)&arg, 10);
	if (x > 0 && y > 0)
	    ar = (double)x / (double)y;
    } else
        ar = strtod(arg, (char **)&arg);

    if (!ar) {
        fprintf(stderr, "Incorrect aspect ratio specification.\n");
	exit(1);
    }
    frame_aspect_ratio = ar;
}

static void opt_gop_size(const char *arg)
{
    gop_size = atoi(arg);
}

static void opt_b_frames(const char *arg)
{
    b_frames = atoi(arg);
    if (b_frames > FF_MAX_B_FRAMES) {
        fprintf(stderr, "\nCannot have more than %d B frames, increase FF_MAX_B_FRAMES.\n", FF_MAX_B_FRAMES);
        exit(1);
    } else if (b_frames < 1) {
        fprintf(stderr, "\nNumber of B frames must be higher than 0\n");
        exit(1);
    }
}

static void opt_mb_decision(const char *arg)
{
    mb_decision = atoi(arg);
}

static void opt_mb_cmp(const char *arg)
{
    mb_cmp = atoi(arg);
}

static void opt_ildct_cmp(const char *arg)
{
    ildct_cmp = atoi(arg);
}

static void opt_sub_cmp(const char *arg)
{
    sub_cmp = atoi(arg);
}

static void opt_cmp(const char *arg)
{
    cmp = atoi(arg);
}

static void opt_pre_cmp(const char *arg)
{
    pre_cmp = atoi(arg);
}

static void opt_pre_me(const char *arg)
{
    pre_me = atoi(arg);
}

static void opt_lumi_mask(const char *arg)
{
    lumi_mask = atof(arg);
}

static void opt_dark_mask(const char *arg)
{
    dark_mask = atof(arg);
}

static void opt_scplx_mask(const char *arg)
{
    scplx_mask = atof(arg);
}

static void opt_tcplx_mask(const char *arg)
{
    tcplx_mask = atof(arg);
}

static void opt_p_mask(const char *arg)
{
    p_mask = atof(arg);
}

static void opt_qscale(const char *arg)
{
    video_qscale = atof(arg);
    if (video_qscale < 0.01 ||
        video_qscale > 255) {
        fprintf(stderr, "qscale must be >= 0.01 and <= 255\n");
        exit(1);
    }
}

static void opt_lmax(const char *arg)
{
    video_lmax = atof(arg)*FF_QP2LAMBDA;
}

static void opt_lmin(const char *arg)
{
    video_lmin = atof(arg)*FF_QP2LAMBDA;
}

static void opt_qmin(const char *arg)
{
    video_qmin = atoi(arg);
    if (video_qmin < 0 ||
        video_qmin > 31) {
        fprintf(stderr, "qmin must be >= 1 and <= 31\n");
        exit(1);
    }
}

static void opt_qmax(const char *arg)
{
    video_qmax = atoi(arg);
    if (video_qmax < 0 ||
        video_qmax > 31) {
        fprintf(stderr, "qmax must be >= 1 and <= 31\n");
        exit(1);
    }
}

static void opt_mb_qmin(const char *arg)
{
    video_mb_qmin = atoi(arg);
    if (video_mb_qmin < 0 ||
        video_mb_qmin > 31) {
        fprintf(stderr, "qmin must be >= 1 and <= 31\n");
        exit(1);
    }
}

static void opt_mb_qmax(const char *arg)
{
    video_mb_qmax = atoi(arg);
    if (video_mb_qmax < 0 ||
        video_mb_qmax > 31) {
        fprintf(stderr, "qmax must be >= 1 and <= 31\n");
        exit(1);
    }
}

static void opt_qdiff(const char *arg)
{
    video_qdiff = atoi(arg);
    if (video_qdiff < 0 ||
        video_qdiff > 31) {
        fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
        exit(1);
    }
}

static void opt_qblur(const char *arg)
{
    video_qblur = atof(arg);
}

static void opt_qcomp(const char *arg)
{
    video_qcomp = atof(arg);
}

static void opt_rc_initial_cplx(const char *arg)
{
    video_rc_initial_cplx = atof(arg);
}
static void opt_b_qfactor(const char *arg)
{
    video_b_qfactor = atof(arg);
}
static void opt_i_qfactor(const char *arg)
{
    video_i_qfactor = atof(arg);
}
static void opt_b_qoffset(const char *arg)
{
    video_b_qoffset = atof(arg);
}
static void opt_i_qoffset(const char *arg)
{
    video_i_qoffset = atof(arg);
}

static void opt_ibias(const char *arg)
{
    video_intra_quant_bias = atoi(arg);
}
static void opt_pbias(const char *arg)
{
    video_inter_quant_bias = atoi(arg);
}

static void opt_packet_size(const char *arg)
{
    packet_size= atoi(arg);
}

static void opt_error_rate(const char *arg)
{
    error_rate= atoi(arg);
}

static void opt_strict(const char *arg)
{
    strict= atoi(arg);
}

static void opt_top_field_first(const char *arg)
{
    top_field_first= atoi(arg);
}

static void opt_noise_reduction(const char *arg)
{
    noise_reduction= atoi(arg);
}

static void opt_qns(const char *arg)
{
    qns= atoi(arg);
}

static void opt_sc_threshold(const char *arg)
{
    sc_threshold= atoi(arg);
}

static void opt_me_range(const char *arg)
{
    me_range = atoi(arg);
}

static void opt_thread_count(const char *arg)
{
    thread_count= atoi(arg);
#if !defined(HAVE_PTHREADS) && !defined(HAVE_W32THREADS)
    if (verbose >= 0)
        fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
#endif
}

static void opt_audio_bitrate(const char *arg)
{
    audio_bit_rate = atoi(arg) * 1000;
}

static void opt_audio_rate(const char *arg)
{
    audio_sample_rate = atoi(arg);
}

static void opt_audio_channels(const char *arg)
{
    audio_channels = atoi(arg);
}

static void opt_video_device(const char *arg)
{
    video_device = av_strdup(arg);
}

static void opt_video_channel(const char *arg)
{
    video_channel = strtol(arg, NULL, 0);
}

static void opt_video_standard(const char *arg)
{
    video_standard = av_strdup(arg);
}

static void opt_audio_device(const char *arg)
{
    audio_device = av_strdup(arg);
}

static void opt_dv1394(const char *arg)
{
    video_grab_format = "dv1394";
    audio_grab_format = NULL;
}

static void opt_audio_codec(const char *arg)
{
    AVCodec *p;

    if (!strcmp(arg, "copy")) {
        audio_stream_copy = 1;
    } else {
        p = first_avcodec;
        while (p) {
            if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_AUDIO)
                break;
            p = p->next;
        }
        if (p == NULL) {
            fprintf(stderr, "Unknown audio codec '%s'\n", arg);
            exit(1);
        } else {
            audio_codec_id = p->id;
        }
    }
}

static void add_frame_hooker(const char *arg)
{
    int argc = 0;
    char *argv[64];
    int i;
    char *args = av_strdup(arg);

    using_vhook = 1;

    argv[0] = strtok(args, " ");
    while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {
    }

    i = frame_hook_add(argc, argv);

    if (i != 0) {
        fprintf(stderr, "Failed to add video hook function: %s\n", arg);
        exit(1);
    }
}

const char *motion_str[] = {
    "zero",
    "full",
    "log",
    "phods",
    "epzs",
    "x1",
    NULL,
};

static void opt_motion_estimation(const char *arg)
{
    const char **p;
    p = motion_str;
    for(;;) {
        if (!*p) {
            fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
            exit(1);
        }
        if (!strcmp(*p, arg))
            break;
        p++;
    }
    me_method = (p - motion_str) + 1;
}

static void opt_video_codec(const char *arg)
{
    AVCodec *p;

    if (!strcmp(arg, "copy")) {
        video_stream_copy = 1;
    } else {
        p = first_avcodec;
        while (p) {
            if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_VIDEO)
                break;
            p = p->next;
        }
        if (p == NULL) {
            fprintf(stderr, "Unknown video codec '%s'\n", arg);
            exit(1);
        } else {
            video_codec_id = p->id;
        }
    }
}

static void opt_map(const char *arg)
{
    AVStreamMap *m;
    const char *p;

    p = arg;
    m = &stream_maps[nb_stream_maps++];

    m->file_index = strtol(arg, (char **)&p, 0);
    if (*p)
        p++;

    m->stream_index = strtol(p, (char **)&p, 0);
}

static void opt_recording_time(const char *arg)
{
    recording_time = parse_date(arg, 1);
}

static void opt_start_time(const char *arg)
{
    start_time = parse_date(arg, 1);
}

static void opt_rec_timestamp(const char *arg)
{
    rec_timestamp = parse_date(arg, 0) / 1000000;
}

static void opt_input_file(const char *filename)
{
    AVFormatContext *ic;
    AVFormatParameters params, *ap = &params;
    int err, i, ret, rfps, rfps_base;

    if (!strcmp(filename, "-"))
        filename = "pipe:";

    using_stdin |= !strcmp(filename, "pipe:" ) || 
                   !strcmp( filename, "/dev/stdin" );

    /* get default parameters from command line */
    memset(ap, 0, sizeof(*ap));
    ap->sample_rate = audio_sample_rate;
    ap->channels = audio_channels;
    ap->frame_rate = frame_rate;
    ap->frame_rate_base = frame_rate_base;
    ap->width = frame_width + frame_padleft + frame_padright;
    ap->height = frame_height + frame_padtop + frame_padbottom;
    ap->image_format = image_format;
    ap->pix_fmt = frame_pix_fmt;

    /* open the input file with generic libav function */
    err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
    if (err < 0) {
        print_error(filename, err);
        exit(1);
    }
    
    /* If not enough info to get the stream parameters, we decode the
       first frames to get it. (used in mpeg case for example) */
    ret = av_find_stream_info(ic);
    if (ret < 0 && verbose >= 0) {
        fprintf(stderr, "%s: could not find codec parameters\n", filename);
        exit(1);
    }

    /* if seeking requested, we execute it */
    if (start_time != 0) {
        int64_t timestamp;

        timestamp = start_time;
        /* add the stream start time */
        if (ic->start_time != AV_NOPTS_VALUE)
            timestamp += ic->start_time;
        ret = av_seek_frame(ic, -1, timestamp);
        if (ret < 0) {
            fprintf(stderr, "%s: could not seek to position %0.3f\n", 
                    filename, (double)timestamp / AV_TIME_BASE);
        }
        /* reset seek info */
        start_time = 0;
    }

    /* update the current parameters so that they match the one of the input stream */
    for(i=0;i<ic->nb_streams;i++) {
        AVCodecContext *enc = &ic->streams[i]->codec;
#if defined(HAVE_PTHREADS) || defined(HAVE_W32THREADS)
        if(thread_count>1)
            avcodec_thread_init(enc, thread_count);
#endif
        enc->thread_count= thread_count;
        switch(enc->codec_type) {
        case CODEC_TYPE_AUDIO:
            //fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
            audio_channels = enc->channels;
            audio_sample_rate = enc->sample_rate;
            break;
        case CODEC_TYPE_VIDEO:
            frame_height = enc->height;
            frame_width = enc->width;
	    frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;
	    frame_pix_fmt = enc->pix_fmt;
            rfps      = ic->streams[i]->r_frame_rate;
            rfps_base = ic->streams[i]->r_frame_rate_base;
            enc->workaround_bugs = workaround_bugs;
            enc->error_resilience = error_resilience; 
            enc->error_concealment = error_concealment; 
            enc->idct_algo = idct_algo;
            enc->debug = debug;
            enc->debug_mv = debug_mv;            
            if(bitexact)
                enc->flags|= CODEC_FLAG_BITEXACT;
            if(me_threshold)
                enc->debug |= FF_DEBUG_MV;

            assert(enc->frame_rate_base == rfps_base); // should be true for now
            if (enc->frame_rate != rfps) { 

                if (verbose >= 0)
                    fprintf(stderr,"\nSeems that stream %d comes from film source: %2.2f->%2.2f\n",
                            i, (float)enc->frame_rate / enc->frame_rate_base,

                    (float)rfps / rfps_base);
            }
            /* update the current frame rate to match the stream frame rate */
            frame_rate      = rfps;
            frame_rate_base = rfps_base;

            enc->rate_emu = rate_emu;
            break;
        case CODEC_TYPE_DATA:
            break;
        default:
            av_abort();
        }
    }
    
    input_files[nb_input_files] = ic;
    /* dump the file content */
    if (verbose >= 0)
        dump_format(ic, nb_input_files, filename, 0);

    nb_input_files++;
    file_iformat = NULL;
    file_oformat = NULL;
    image_format = NULL;

    rate_emu = 0;
}

static void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)
{
    int has_video, has_audio, i, j;
    AVFormatContext *ic;

    has_video = 0;
    has_audio = 0;
    for(j=0;j<nb_input_files;j++) {
        ic = input_files[j];
        for(i=0;i<ic->nb_streams;i++) {
            AVCodecContext *enc = &ic->streams[i]->codec;
            switch(enc->codec_type) {
            case CODEC_TYPE_AUDIO:
                has_audio = 1;
                break;
            case CODEC_TYPE_VIDEO:
                has_video = 1;
                break;
            case CODEC_TYPE_DATA:
                break;
            default:
                av_abort();
            }
        }
    }
    *has_video_ptr = has_video;
    *has_audio_ptr = has_audio;
}

static void opt_output_file(const char *filename)
{
    AVStream *st;
    AVFormatContext *oc;
    int use_video, use_audio, nb_streams, input_has_video, input_has_audio;
    int codec_id;
    AVFormatParameters params, *ap = &params;

    if (!strcmp(filename, "-"))
        filename = "pipe:";

    oc = av_alloc_format_context();

    if (!file_oformat) {
        file_oformat = guess_format(NULL, filename, NULL);
        if (!file_oformat) {
            fprintf(stderr, "Unable for find a suitable output format for '%s'\n",
                    filename);
            exit(1);
        }
    }
    
    oc->oformat = file_oformat;

    if (!strcmp(file_oformat->name, "ffm") && 
        strstart(filename, "http:", NULL)) {
        /* special case for files sent to ffserver: we get the stream
           parameters from ffserver */
        if (read_ffserver_streams(oc, filename) < 0) {
            fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
            exit(1);
        }
    } else {
        use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy;
        use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy;

        /* disable if no corresponding type found and at least one
           input file */
        if (nb_input_files > 0) {
            check_audio_video_inputs(&input_has_video, &input_has_audio);
            if (!input_has_video)
                use_video = 0;
            if (!input_has_audio)
                use_audio = 0;
        }

        /* manual disable */
        if (audio_disable) {
            use_audio = 0;
        }
        if (video_disable) {
            use_video = 0;
        }
        
        nb_streams = 0;
        if (use_video) {
            AVCodecContext *video_enc;
            
            st = av_new_stream(oc, nb_streams++);
            if (!st) {
                fprintf(stderr, "Could not alloc stream\n");
                exit(1);
            }
#if defined(HAVE_PTHREADS) || defined(HAVE_W32THREADS)
            if(thread_count>1)
                avcodec_thread_init(&st->codec, thread_count);
#endif

            video_enc = &st->codec;
            
            if(!strcmp(file_oformat->name, "mp4") || !strcmp(file_oformat->name, "mov") || !strcmp(file_oformat->name, "3gp"))
                video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
            if (video_stream_copy) {
                st->stream_copy = 1;
                video_enc->codec_type = CODEC_TYPE_VIDEO;
            } else {
                char *p;
                int i;
                AVCodec *codec;
            
                codec_id = file_oformat->video_codec;
                if (video_codec_id != CODEC_ID_NONE)
                    codec_id = video_codec_id;
                
                video_enc->codec_id = codec_id;
                codec = avcodec_find_encoder(codec_id);
                
                video_enc->bit_rate = video_bit_rate;
                video_enc->bit_rate_tolerance = video_bit_rate_tolerance;
                video_enc->frame_rate = frame_rate; 
                video_enc->frame_rate_base = frame_rate_base; 
                if(codec && codec->supported_framerates){
                    const AVRational *p= codec->supported_framerates;
                    AVRational req= (AVRational){frame_rate, frame_rate_base};
                    const AVRational *best=NULL;
                    AVRational best_error= (AVRational){INT_MAX, 1};
                    for(; p->den!=0; p++){
                        AVRational error= av_sub_q(req, *p);
                        if(error.num <0) error.num *= -1;
                        if(av_cmp_q(error, best_error) < 0){
                            best_error= error;
                            best= p;
                        }
                    }
                    video_enc->frame_rate     = best->num;
                    video_enc->frame_rate_base= best->den;
                }
                
                video_enc->width = frame_width + frame_padright + frame_padleft;
                video_enc->height = frame_height + frame_padtop + frame_padbottom;
		video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
                video_enc->pix_fmt = frame_pix_fmt;

                if(codec && codec->pix_fmts){
                    const enum PixelFormat *p= codec->pix_fmts;
                    for(; *p!=-1; p++){
                        if(*p == video_enc->pix_fmt)
                            break;
                    }
                    if(*p == -1)
                        video_enc->pix_fmt = codec->pix_fmts[0];
                }

                if (!intra_only)
                    video_enc->gop_size = gop_size;
                else
                    video_enc->gop_size = 0;
                if (video_qscale || same_quality) {
                    video_enc->flags |= CODEC_FLAG_QSCALE;
                    st->quality = FF_QP2LAMBDA * video_qscale;
                }

                if(intra_matrix)
                    video_enc->intra_matrix = intra_matrix;
                if(inter_matrix)
                    video_enc->inter_matrix = inter_matrix;

                if(bitexact)
                    video_enc->flags |= CODEC_FLAG_BITEXACT;

                video_enc->mb_decision = mb_decision;
                video_enc->mb_cmp = mb_cmp;
                video_enc->ildct_cmp = ildct_cmp;
                video_enc->me_sub_cmp = sub_cmp;
                video_enc->me_cmp = cmp;
                video_enc->me_pre_cmp = pre_cmp;
                video_enc->pre_me = pre_me;
                video_enc->lumi_masking = lumi_mask;
                video_enc->dark_masking = dark_mask;
                video_enc->spatial_cplx_masking = scplx_mask;
                video_enc->temporal_cplx_masking = tcplx_mask;
                video_enc->p_masking = p_mask;
                video_enc->quantizer_noise_shaping= qns;
                
                if (use_umv) {
                    video_enc->flags |= CODEC_FLAG_H263P_UMV;
                }
                if (use_ss) {
                    video_enc->flags |= CODEC_FLAG_H263P_SLICE_STRUCT;
                }
           	if (use_aic) {
                    video_enc->flags |= CODEC_FLAG_H263P_AIC;
                }
           	if (use_aiv) {
                    video_enc->flags |= CODEC_FLAG_H263P_AIV;
                }
                if (use_4mv) {
                    video_enc->flags |= CODEC_FLAG_4MV;
                }
                if (use_obmc) {
                    video_enc->flags |= CODEC_FLAG_OBMC;
                }
                if (use_loop) {
                    video_enc->flags |= CODEC_FLAG_LOOP_FILTER;
                }
            
                if(use_part) {
                    video_enc->flags |= CODEC_FLAG_PART;
                }
           	if (use_alt_scan) {
                    video_enc->flags |= CODEC_FLAG_ALT_SCAN;
                }
           	if (use_trell) {
                    video_enc->flags |= CODEC_FLAG_TRELLIS_QUANT;
                }
           	if (use_scan_offset) {
                    video_enc->flags |= CODEC_FLAG_SVCD_SCAN_OFFSET;
                }
           	if (closed_gop) {
                    video_enc->flags |= CODEC_FLAG_CLOSED_GOP;
                }
           	if (use_qpel) {
                    video_enc->flags |= CODEC_FLAG_QPEL;
                }
           	if (use_qprd) {
                    video_enc->flags |= CODEC_FLAG_QP_RD;
                }
           	if (use_cbprd) {
                    video_enc->flags |= CODEC_FLAG_CBP_RD;
                }
                if (b_frames) {
                    video_enc->max_b_frames = b_frames;
                    video_enc->b_frame_strategy = 0;
                    video_enc->b_quant_factor = 2.0;
                }
                if (do_interlace_dct) {
                    video_enc->flags |= CODEC_FLAG_INTERLACED_DCT;
                }
                if (do_interlace_me) {
                    video_enc->flags |= CODEC_FLAG_INTERLACED_ME;
                }
                video_enc->qmin = video_qmin;
                video_enc->qmax = video_qmax;
                video_enc->lmin = video_lmin;
                video_enc->lmax = video_lmax;
                video_enc->mb_qmin = video_mb_qmin;
                video_enc->mb_qmax = video_mb_qmax;
                video_enc->max_qdiff = video_qdiff;
                video_enc->qblur = video_qblur;
                video_enc->qcompress = video_qcomp;
                video_enc->rc_eq = video_rc_eq;
                video_enc->debug = debug;
                video_enc->debug_mv = debug_mv;
                video_enc->thread_count = thread_count;
                p= video_rc_override_string;
                for(i=0; p; i++){
                    int start, end, q;
                    int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
                    if(e!=3){
                        fprintf(stderr, "error parsing rc_override\n");
                        exit(1);
                    }
                    video_enc->rc_override= 
                        av_realloc(video_enc->rc_override, 
                                   sizeof(RcOverride)*(i+1));
                    video_enc->rc_override[i].start_frame= start;
                    video_enc->rc_override[i].end_frame  = end;
                    if(q>0){
                        video_enc->rc_override[i].qscale= q;
                        video_enc->rc_override[i].quality_factor= 1.0;
                    }
                    else{
                        video_enc->rc_override[i].qscale= 0;
                        video_enc->rc_override[i].quality_factor= -q/100.0;
                    }
                    p= strchr(p, '/');
                    if(p) p++;
                }
                video_enc->rc_override_count=i;

                video_enc->rc_max_rate = video_rc_max_rate;
                video_enc->rc_min_rate = video_rc_min_rate;
                video_enc->rc_buffer_size = video_rc_buffer_size;
                video_enc->rc_buffer_aggressivity= video_rc_buffer_aggressivity;
                video_enc->rc_initial_cplx= video_rc_initial_cplx;
                video_enc->i_quant_factor = video_i_qfactor;
                video_enc->b_quant_factor = video_b_qfactor;
                video_enc->i_quant_offset = video_i_qoffset;
                video_enc->b_quant_offset = video_b_qoffset;
                video_enc->intra_quant_bias = video_intra_quant_bias;
                video_enc->inter_quant_bias = video_inter_quant_bias;
                video_enc->dct_algo = dct_algo;
                video_enc->idct_algo = idct_algo;
                video_enc->me_threshold= me_threshold;
                video_enc->mb_threshold= mb_threshold;
                video_enc->intra_dc_precision= intra_dc_precision - 8;
                video_enc->strict_std_compliance = strict;
                video_enc->error_rate = error_rate;
                video_enc->noise_reduction= noise_reduction;
                video_enc->scenechange_threshold= sc_threshold;
                video_enc->me_range = me_range;
                video_enc->coder_type= coder;
                video_enc->context_model= context;
                video_enc->prediction_method= predictor;

                if(packet_size){
                    video_enc->rtp_mode= 1;
                    video_enc->rtp_payload_size= packet_size;
                }
            
                if (do_psnr)
                    video_enc->flags|= CODEC_FLAG_PSNR;
            
                video_enc->me_method = me_method;

                /* two pass mode */
                if (do_pass) {
                    if (do_pass == 1) {
                        video_enc->flags |= CODEC_FLAG_PASS1;
                    } else {
                        video_enc->flags |= CODEC_FLAG_PASS2;
                    }
                }
            }
        }
    
        if (use_audio) {
            AVCodecContext *audio_enc;

            st = av_new_stream(oc, nb_streams++);
            if (!st) {
                fprintf(stderr, "Could not alloc stream\n");
                exit(1);
            }
#if defined(HAVE_PTHREADS) || defined(HAVE_W32THREADS)
            if(thread_count>1)
                avcodec_thread_init(&st->codec, thread_count);
#endif

            audio_enc = &st->codec;
            audio_enc->codec_type = CODEC_TYPE_AUDIO;

            if(!strcmp(file_oformat->name, "mp4") || !strcmp(file_oformat->name, "mov") || !strcmp(file_oformat->name, "3gp"))
                audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
            if (audio_stream_copy) {
                st->stream_copy = 1;
            } else {
                codec_id = file_oformat->audio_codec;
                if (audio_codec_id != CODEC_ID_NONE)
                    codec_id = audio_codec_id;
                audio_enc->codec_id = codec_id;
                
                audio_enc->bit_rate = audio_bit_rate;
                audio_enc->sample_rate = audio_sample_rate;
                audio_enc->strict_std_compliance = strict;