Using ffprobe to get info from a file in a nice JSON format

command.txt

ffprobe -v quiet -print_format json -show_format -show_streams "lolwut.mp4" > "lolwut.mp4.json"

lolwut.mp4.json

{
    "streams": [
        {
            "index": 0,
            "codec_name": "h264",
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
            "codec_type": "video",
            "codec_time_base": "1001/48000",
            "codec_tag_string": "avc1",
            "codec_tag": "0x31637661",
            "width": 1280,
            "height": 720,
            "has_b_frames": 0,
            "pix_fmt": "yuv420p",
            "level": 31,
            "is_avc": "1",
            "nal_length_size": "4",
            "r_frame_rate": "35029/1461",
            "avg_frame_rate": "35029/1461",
            "time_base": "1/35029",
            "start_time": "0.000000",
            "duration": "1239.195267",
            "bit_rate": "1782423",
            "nb_frames": "29711",
            "tags": {
                "creation_time": "1970-01-01 00:00:00",
                "language": "und",
                "handler_name": "VideoHandler"
            }
        },
        {
            "index": 1,
            "codec_name": "aac",
            "codec_long_name": "Advanced Audio Coding",
            "codec_type": "audio",
            "codec_time_base": "1/48000",
            "codec_tag_string": "mp4a",
            "codec_tag": "0x6134706d",
            "sample_fmt": "s16",
            "sample_rate": "48000",
            "channels": 2,
            "bits_per_sample": 0,
            "r_frame_rate": "0/0",
            "avg_frame_rate": "0/0",
            "time_base": "1/48000",
            "start_time": "0.000000",
            "duration": "1239.059396",
            "bit_rate": "127966",
            "nb_frames": "58081",
            "tags": {
                "creation_time": "2012-04-01 15:42:28",
                "language": "jpn",
                "handler_name": "GPAC ISO Audio Handler"
            }
        }
    ],
    "format": {
        "filename": "lolwut.mp4",
        "nb_streams": 2,
        "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
        "format_long_name": "QuickTime/MPEG-4/Motion JPEG 2000 format",
        "start_time": "0.000000",
        "duration": "1239.195000",
        "size": "296323860",
        "bit_rate": "1913008",
        "tags": {
            "major_brand": "isom",
            "minor_version": "1",
            "compatible_brands": "isom",
            "creation_time": "2012-04-01 15:42:24"
        }
    }
}

@Jehoel, thank you for your reply. Really, you are right. I would like a way to analyze HLS and MPEG-DASH stream with FFmpeg (the segmentSize, segmentDuration) and check its integrity.

is there a way to grab these informations using one of library provided by ffmpeg using C?