What if avconv grocks json?

avconv.json

{
    "input" : [ 
        { "analyzeduration": 1,
          "format": { "name" : "bmd",
	                  "options" : { "video_mode": 11,
	                                "instance": 0,
	                                "audio_connection": 2,
	                                "video_connection": 4,
	                                "video_format": 1,
	                                "wallclock": 1 }
                    },
	  "name": "default" }
    ],
    "filter_complex" : [[
        { "crop" : "1280:720:0:0" },
        { "yadif" : "0:-1:0" }
        { "output" : "[o0]"}
    ], [ 
        { "input" : "[o0]" },
        { "drawtext" : "fontfile='/usr/share/fonts/dejavu/DejaVuSans.ttf':text='%s,%n%N':x=200:y=50:fontsize=24:fontcolor=white" },
        { "output" : "[o0]" }
    ]],
    "output" : [ {
        "encode" : [ 
            { "stream" : "d",
              "codec" : "copy" },
            { "stream" : "v:[o0]",
              "codec" : "libx264",
              "bitrate" : "2400k",
              "gop" : 50,
              "rate" : 25
            },
            { "stream" : "a",
              "codec" : "libfdk_aac",
              "audiorate" : "44100",
              "bitrate" : "128k"
            } 
        ],
        "map" : [ "[o0]", "0:a", "0:d" ],
        "mux" : {
            "format" : { "name" : "flv" },
            "name" : "rtmp://10.1.11.22:1935/casino/test/wallclock_test_med"
        }
    } ]
}