ffmpeg.c

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_thread_count(const char *arg)
{
    thread_count= atoi(arg);
#if !defined(HAVE_PTHREADS) && !defined(HAVE_W32THREADS)
    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_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;
    ap->height = frame_height;
    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) {
        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;

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

        /* 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_mallocz(sizeof(AVStream));
            if (!st) {
                fprintf(stderr, "Could not alloc stream\n");
                exit(1);
            }
            avcodec_get_context_defaults(&st->codec);
#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;
            
                codec_id = file_oformat->video_codec;
                if (video_codec_id != CODEC_ID_NONE)
                    codec_id = video_codec_id;
                
                video_enc->codec_id = 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; 
                
                video_enc->width = frame_width;
                video_enc->height = frame_height;
		video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
		video_enc->pix_fmt = frame_pix_fmt;

                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_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_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 (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->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->strict_std_compliance = strict;
                video_enc->error_rate = error_rate;
                video_enc->noise_reduction= noise_reduction;
                video_enc->scenechange_threshold= sc_threshold;
                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;
                    }
                }
            }
            oc->streams[nb_streams] = st;
            nb_streams++;
        }
    
        if (use_audio) {
            AVCodecContext *audio_enc;

            st = av_mallocz(sizeof(AVStream));
            if (!st) {
                fprintf(stderr, "Could not alloc stream\n");
                exit(1);
            }
            avcodec_get_context_defaults(&st->codec);
#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;
                audio_enc->thread_count = thread_count;
                /* For audio codecs other than AC3 we limit */
                /* the number of coded channels to stereo   */
                if (audio_channels > 2 && codec_id != CODEC_ID_AC3) {
                    audio_enc->channels = 2;
                } else
                    audio_enc->channels = audio_channels;
            }
            oc->streams[nb_streams] = st;
            nb_streams++;
        }

        oc->nb_streams = nb_streams;

        if (!nb_streams) {
            fprintf(stderr, "No audio or video streams available\n");
            exit(1);
        }

        if (str_title)
            pstrcpy(oc->title, sizeof(oc->title), str_title);
        if (str_author)
            pstrcpy(oc->author, sizeof(oc->author), str_author);
        if (str_copyright)
            pstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright);
        if (str_comment)
            pstrcpy(oc->comment, sizeof(oc->comment), str_comment);
    }

    output_files[nb_output_files++] = oc;

    strcpy(oc->filename, filename);

    /* check filename in case of an image number is expected */
    if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
        if (filename_number_test(oc->filename) < 0) {
            print_error(oc->filename, AVERROR_NUMEXPECTED);
            exit(1);
        }
    }

    if (!(oc->oformat->flags & AVFMT_NOFILE)) {
        /* test if it already exists to avoid loosing precious files */
        if (!file_overwrite && 
            (strchr(filename, ':') == NULL ||
             strstart(filename, "file:", NULL))) {
            if (url_exist(filename)) {
                int c;
                
                if ( !using_stdin ) {
                    fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
                    fflush(stderr);
                    c = getchar();
                    if (toupper(c) != 'Y') {
                        fprintf(stderr, "Not overwriting - exiting\n");
                        exit(1);
                    }
				}
				else {
                    fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
                    exit(1);
				}
            }
        }
        
        /* open the file */
        if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
            fprintf(stderr, "Could not open '%s'\n", filename);
            exit(1);
        }
    }

    memset(ap, 0, sizeof(*ap));
    ap->image_format = image_format;
    if (av_set_parameters(oc, ap) < 0) {
        fprintf(stderr, "%s: Invalid encoding parameters\n",
                oc->filename);
        exit(1);
    }

    /* reset some options */
    file_oformat = NULL;
    file_iformat = NULL;
    image_format = NULL;
    audio_disable = 0;
    video_disable = 0;
    audio_codec_id = CODEC_ID_NONE;
    video_codec_id = CODEC_ID_NONE;
    audio_stream_copy = 0;
    video_stream_copy = 0;
}

/* prepare dummy protocols for grab */
static void prepare_grab(void)
{
    int has_video, has_audio, i, j;
    AVFormatContext *oc;
    AVFormatContext *ic;
    AVFormatParameters vp1, *vp = &vp1;
    AVFormatParameters ap1, *ap = &ap1;
    
    /* see if audio/video inputs are needed */
    has_video = 0;
    has_audio = 0;
    memset(ap, 0, sizeof(*ap));
    memset(vp, 0, sizeof(*vp));
    for(j=0;j<nb_output_files;j++) {
        oc = output_files[j];
        for(i=0;i<oc->nb_streams;i++) {
            AVCodecContext *enc = &oc->streams[i]->codec;
            switch(enc->codec_type) {
            case CODEC_TYPE_AUDIO:
                if (enc->sample_rate > ap->sample_rate)
                    ap->sample_rate = enc->sample_rate;
                if (enc->channels > ap->channels)
                    ap->channels = enc->channels;
                has_audio = 1;
                break;
            case CODEC_TYPE_VIDEO:
                if (enc->width > vp->width)
                    vp->width = enc->width;
                if (enc->height > vp->height)
                    vp->height = enc->height;
                
                assert(enc->frame_rate_base == DEFAULT_FRAME_RATE_BASE);
                if (enc->frame_rate > vp->frame_rate){
                    vp->frame_rate      = enc->frame_rate;
                    vp->frame_rate_base = enc->frame_rate_base;
                }
                has_video = 1;
                break;
            default:
                av_abort();
            }
        }
    }
    
    if (has_video == 0 && has_audio == 0) {
        fprintf(stderr, "Output file must have at least one audio or video stream\n");
        exit(1);
    }
    
    if (has_video) {
        AVInputFormat *fmt1;
        fmt1 = av_find_input_format(video_grab_format);
        vp->device  = video_device;
        vp->channel = video_channel;
	vp->standard = video_standard;
        if (av_open_input_file(&ic, "", fmt1, 0, vp) < 0) {
            fprintf(stderr, "Could not find video grab device\n");
            exit(1);
        }
        /* If not enough info to get the stream parameters, we decode the
           first frames to get it. */
	if ((ic->ctx_flags & AVFMTCTX_NOHEADER) && av_find_stream_info(ic) < 0) {
            fprintf(stderr, "Could not find video grab parameters\n");
            exit(1);
        }
        /* by now video grab has one stream */
        ic->streams[0]->r_frame_rate      = vp->frame_rate;
        ic->streams[0]->r_frame_rate_base = vp->frame_rate_base;
        input_files[nb_input_files] = ic;
        dump_format(ic, nb_input_files, "", 0);
        nb_input_files++;
    }
    if (has_audio && audio_grab_format) {
        AVInputFormat *fmt1;
        fmt1 = av_find_input_format(audio_grab_format);
        ap->device = audio_device;
        if (av_open_input_file(&ic, "", fmt1, 0, ap) < 0) {
            fprintf(stderr, "Could not find audio grab device\n");
            exit(1);
        }
        input_files[nb_input_files] = ic;
        dump_format(ic, nb_input_files, "", 0);
        nb_input_files++;
    }
}

/* same option as mencoder */
static void opt_pass(const char *pass_str)
{
    int pass;
    pass = atoi(pass_str);
    if (pass != 1 && pass != 2) {
        fprintf(stderr, "pass number can be only 1 or 2\n");
        exit(1);
    }
    do_pass = pass;
}

#if defined(CONFIG_WIN32) || defined(CONFIG_OS2)
static int64_t getutime(void)
{
  return av_gettime();
}
#else
static int64_t getutime(void)
{
    struct rusage rusage;

    getrusage(RUSAGE_SELF, &rusage);
    return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
}
#endif

extern int ffm_nopts;

static void opt_bitexact(void)
{
    bitexact=1;
    /* disable generate of real time pts in ffm (need to be supressed anyway) */
    ffm_nopts = 1;
}

static void show_formats(void)
{
    AVInputFormat *ifmt;
    AVOutputFormat *ofmt;
    AVImageFormat *image_fmt;
    URLProtocol *up;
    AVCodec *p, *p2;
    const char **pp, *last_name;

    printf("File formats:\n");
    last_name= "000";
    for(;;){
        int decode=0;
        int encode=0;
        const char *name=NULL;

        for(ofmt = first_oformat; ofmt != NULL; ofmt = ofmt->next) {
            if((name == NULL || strcmp(ofmt->name, name)<0) &&
                strcmp(ofmt->name, last_name)>0){
                name= ofmt->name;
                encode=1;
            }
        }
        for(ifmt = first_iformat; ifmt != NULL; ifmt = ifmt->next) {
            if((name == NULL || strcmp(ifmt->name, name)<0) &&
                strcmp(ifmt->name, last_name)>0){
                name= ifmt->name;
                encode=0;
            }
            if(name && strcmp(ifmt->name, name)==0)
                decode=1;
        }
        if(name==NULL)
            break;
        last_name= name;
        
        printf(
            " %s%s %s\n", 
            decode ? "D":" ", 
            encode ? "E":" ", 
            name);
    }
    printf("\n");

    printf("Image formats:\n");
    for(image_fmt = first_image_format; image_fmt != NULL; 
        image_fmt = image_fmt->next) {
        printf(
            " %s%s %s\n",
            image_fmt->img_read  ? "D":" ",
            image_fmt->img_write ? "E":" ",
            image_fmt->name);
    }
    printf("\n");

    printf("Codecs:\n");
    last_name= "000";
    for(;;){
        int decode=0;
        int encode=0;
        int cap=0;

        p2=NULL;
        for(p = first_avcodec; p != NULL; p = p->next) {
            if((p2==NULL || strcmp(p->name, p2->name)<0) &&
                strcmp(p->name, last_name)>0){
                p2= p;
                decode= encode= cap=0;
            }
            if(p2 && strcmp(p->name, p2->name)==0){
                if(p->decode) decode=1;
                if(p->encode) encode=1;
                cap |= p->capabilities;
            }
        }
        if(p2==NULL)
            break;
        last_name= p2->name;
        
        printf(
            " %s%s%s%s%s%s %s", 
            decode ? "D": (/*p2->decoder ? "d":*/" "), 
            encode ? "E":" ", 
            p2->type == CODEC_TYPE_AUDIO ? "A":"V",
            cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
            cap & CODEC_CAP_DR1 ? "D":" ",
            cap & CODEC_CAP_TRUNCATED ? "T":" ",
            p2->name);
       /* if(p2->decoder && decode==0)
            printf(" use %s for decoding", p2->decoder->name);*/
        printf("\n");
    }
    printf("\n");

    printf("Supported file protocols:\n");
    for(up = first_protocol; up != NULL; up = up->next)
        printf(" %s:", up->name);
    printf("\n");
    
    printf("Frame size, frame rate abbreviations:\n ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif\n");
    printf("Motion estimation methods:\n");
    pp = motion_str;
    while (*pp) {
        printf(" %s", *pp);
        if ((pp - motion_str + 1) == ME_ZERO) 
            printf("(fastest)");
        else if ((pp - motion_str + 1) == ME_FULL) 
            printf("(slowest)");
        else if ((pp - motion_str + 1) == ME_EPZS) 
            printf("(default)");
        pp++;
    }
    printf("\n\n");
    printf(
"Note, the names of encoders and decoders dont always match, so there are\n"
"several cases where the above table shows encoder only or decoder only entries\n"
"even though both encoding and decoding are supported for example, the h263\n"
"decoder corresponds to the h263 and h263p encoders, for file formats its even\n"
"worse\n");
    exit(1);
}

void parse_matrix_coeffs(uint16_t *dest, const char *str)
{
    int i;
    const char *p = str;
    for(i = 0;; i++) {
        dest[i] = atoi(p);
        if(i == 63)
            break;
        p = strchr(p, ',');
        if(!p) {
            fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
            exit(1);
        }
        p++;
    }
}

void opt_inter_matrix(const char *arg)
{
    inter_matrix = av_mallocz(sizeof(uint16_t) * 64);
    parse_matrix_coeffs(inter_matrix, arg);
}

void opt_intra_matrix(const char *arg)
{
    intra_matrix = av_mallocz(sizeof(uint16_t) * 64);
    parse_matrix_coeffs(intra_matrix, arg);
}

static void opt_target(const char *arg)
{
    int norm = -1;

    if(!strncmp(arg, "pal-", 4)) {
        norm = 0;
        arg += 4;
    } else if(!strncmp(arg, "ntsc-", 5)) {
        norm = 1;
        arg += 5;
    } else {
        int fr;
        /* Calculate FR via float to avoid int overflow */
        fr = (int)(frame_rate * 1000.0 / frame_rate_base);
        if(fr == 25000) {