avconv_opt.c

    { "scodec", OPT_SUBTITLE | HAS_ARG  | OPT_FUNC2,  { .func2_arg = opt_subtitle_codec },
        "force subtitle codec ('copy' to copy stream)", "codec" },
    { "stag",   OPT_SUBTITLE | HAS_ARG  | OPT_EXPERT  | OPT_FUNC2, { .func2_arg = opt_subtitle_tag }
        , "force subtitle tag/fourcc", "fourcc/tag" },

    /* grab options */
    { "isync", OPT_BOOL | OPT_EXPERT, { &input_sync }, "this option is deprecated and does nothing", "" },

    /* muxer options */
    { "muxdelay",   OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_max_delay) },
        "set the maximum demux-decode delay", "seconds" },
    { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_preload) },
        "set the initial demux-decode delay", "seconds" },

    { "bsf", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(bitstream_filters) },
        "A comma-separated list of bitstream filters", "bitstream_filters" },

    /* data codec support */
    { "dcodec", HAS_ARG | OPT_DATA | OPT_FUNC2, { .func2_arg = opt_data_codec },
        "force data codec ('copy' to copy stream)", "codec" },

    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default },
        "generic catch all option", "" },
    { NULL, },
};