{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "https://mkvtoolnix.download/doc/mkvmerge-identification-output-schema-v20.json",
  "title": "mkvmerge identification output",
  "description": "The JSON output produced by mkvmerge's file identification mode",
  "additionalProperties": false,
  "type": "object",
  "properties": {
    "attachments": {
      "description": "an array describing the attachments found if any",
      "type": "array",
      "items": {
        "additionalProperties": false,
        "type": "object",
        "properties": {
          "content_type": {
            "type": "string",
            "minLength": 1
          },
          "description": {
            "type": "string"
          },
          "file_name": {
            "type": "string"
          },
          "id": {
            "type": "integer",
            "minimum": 0
          },
          "size": {
            "type": "integer",
            "minimum": 0
          },
          "properties": {
            "additionalProperties": false,
            "type": "object",
            "properties": {
              "uid": {
                "type": "integer",
                "minimum": 0
              }
            },
            "additionalProperties": false
          },
          "type": {
            "type": "string"
          }
        },
        "additionalProperties": false,
        "required": [
          "file_name",
          "id",
          "properties",
          "size"
        ]
      }
    },
    "chapters": {
      "type": "array",
      "items": {
        "additionalProperties": false,
        "type": "object",
        "properties": {
          "num_entries": {
            "type": "integer"
          }
        },
        "additionalProperties": false,
        "required": [
          "num_entries"
        ]
      }
    },
    "container": {
      "additionalProperties": false,
      "description": "information about the identified container",
      "type": "object",
      "properties": {
        "properties": {
          "additionalProperties": false,
          "description": "additional properties for the container varying by container format",
          "type": "object",
          "properties": {
            "container_type": {
              "description": "A unique number identifying the container type that's supposed to stay constant over all future releases of MKVToolNix",
              "type": "integer",
              "minLength": 1
            },
            "date_local": {
              "description": "The muxing date in ISO 8601 format (in local time zone)",
              "type": "string",
              "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}([+-][0-9]{2}:[0-9]{2}|Z)$"
            },
            "date_utc": {
              "description": "The muxing date in ISO 8601 format (in UTC)",
              "type": "string",
              "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}([+-][0-9]{2}:[0-9]{2}|Z)$"
            },
            "duration": {
              "description": "The file's/segment's duration in nanoseconds",
              "type": "integer",
              "minimum": 0
            },
            "is_providing_timestamps": {
              "description": "States whether or not the container has timestamps for the packets (e.g. Matroska, MP4) or not (e.g. SRT, MP3)",
              "type": "boolean"
            },
            "muxing_application": {
              "description": "A Unicode string containing the name and possibly version of the low-level library or application that created the file",
              "type": "string"
            },
            "next_segment_uid": {
              "description": "A hexadecimal string of the next segment's UID (only for Matroska files)",
              "type": "string",
              "minLength": 32,
              "maxLength": 32
            },
            "other_file": {
              "description": "An array of names of additional files processed as well",
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "playlist": {
              "description": "States whether or not the identified file is a playlist (e.g. MPLS) referring to several other files",
              "type": "boolean"
            },
            "playlist_chapters": {
              "description": "The number of chapters in a playlist if it is a one",
              "type": "integer",
              "minimum": 0
            },
            "playlist_duration": {
              "description": "The total duration in nanoseconds of all files referenced by the playlist if it is a one",
              "type": "integer",
              "minimum": 0
            },
            "playlist_file": {
              "description": "An array of file names the playlist contains",
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "playlist_size": {
              "description": "The total size in bytes of all files referenced by the playlist if it is a one",
              "type": "integer",
              "minimum": 0
            },
            "previous_segment_uid": {
              "description": "A hexadecimal string of the previous segment's UID (only for Matroska files)",
              "type": "string",
              "minLength": 32,
              "maxLength": 32
            },
            "programs": {
              "description": "A container describing multiple programs multiplexed into the source file, e.g. multiple programs in one DVB transport stream",
              "type": "array",
              "items": {
                "additionalProperties": false,
                "description": "Properties describing a single program",
                "type": "object",
                "properties": {
                  "program_number": {
                    "description": "A unique number identifying a set of tracks that belong together; used e.g. in DVB for multiplexing multiple stations within a single transport stream",
                    "type": "integer",
                    "minimum": 0
                  },
                  "service_name": {
                    "description": "The name of a service provided by this program, e.g. a TV channel name such as 'arte HD'",
                    "type": "string"
                  },
                  "service_provider": {
                    "description": "The name of the provider of the service provided by this program, e.g. a TV station name such as 'ARD'",
                    "type": "string"
                  }
                }
              }
            },
            "segment_uid": {
              "description": "A hexadecimal string of the segment's UID (only for Matroska files)",
              "type": "string",
              "minLength": 32,
              "maxLength": 32
            },
            "timestamp_scale": {
              "description": "Base unit for segment ticks and track ticks, in nanoseconds. A timestamp_scale value of 1.000.000 means scaled timestamps in the segment are expressed in milliseconds.",
              "type": "integer",
              "minimum": 0
            },
            "title": {
              "type": "string"
            },
            "writing_application": {
              "description": "A Unicode string containing the name and possibly version of the high-level application that created the file",
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "recognized": {
          "description": "States whether or not mkvmerge knows about the format",
          "type": "boolean"
        },
        "supported": {
          "description": "States whether or not mkvmerge can read the format",
          "type": "boolean"
        },
        "type": {
          "description": "A human-readable description/name for the container format",
          "type": "string",
          "minLength": 1
        }
      },
      "additionalProperties": false,
      "required": [
        "recognized",
        "supported"
      ]
    },
    "errors": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "file_name": {
      "description": "the identified file's name",
      "type": "string",
      "minLength": 1
    },
    "global_tags": {
      "type": "array",
      "items": {
        "additionalProperties": false,
        "type": "object",
        "properties": {
          "num_entries": {
            "type": "integer"
          }
        },
        "additionalProperties": false,
        "required": [
          "num_entries"
        ]
      }
    },
    "identification_format_version": {
      "description": "The output format's version",
      "type": "integer",
      "minimum": 20,
      "maximum": 20
    },
    "track_tags": {
      "type": "array",
      "items": {
        "additionalProperties": false,
        "type": "object",
        "properties": {
          "num_entries": {
            "type": "integer"
          },
          "track_id": {
            "type": "integer"
          }
        },
        "additionalProperties": false,
        "required": [
          "num_entries",
          "track_id"
        ]
      }
    },
    "tracks": {
      "type": "array",
      "items": {
        "additionalProperties": false,
        "type": "object",
        "properties": {
          "codec": {
            "type": "string",
            "minLength": 1
          },
          "id": {
            "type": "integer",
            "minLength": 0
          },
          "type": {
            "type": "string"
          },
          "properties": {
            "additionalProperties": true,
            "type": "object",
            "patternProperties": {
              "^tag_": {
                "type": "string"
              }
            },
            "properties": {
              "aac_is_sbr": {
                "type": "string",
                "enum": [
                  "true",
                  "false",
                  "unknown"
                ]
              },
              "alpha_mode": {
                "type": "integer",
                "minimum": 0,
                "maximum": 1
              },
              "audio_bits_per_sample": {
                "type": "integer",
                "minimum": 0
              },
              "audio_channels": {
                "type": "integer",
                "minimum": 0
              },
              "audio_emphasis": {
                "description": "Audio emphasis applied on audio samples. The player MUST apply the inverse emphasis to get the proper audio samples.",
                "type": "integer",
                "minimum": 0
              },
              "audio_sampling_frequency": {
                "type": "integer",
                "minimum": 0
              },
              "cb_subsample": {
                "type": "string",
                "pattern": "^-?[0-9]+,-?[0-9]+$"
              },
              "chroma_siting": {
                "type": "string",
                "pattern": "^-?[0-9]+,-?[0-9]+$"
              },
              "chroma_subsample": {
                "type": "string",
                "pattern": "^-?[0-9]+,-?[0-9]+$"
              },
              "chromaticity_coordinates": {
                "type": "string",
                "pattern": "^-?[0-9]+(\\.[0-9]+)?,-?[0-9]+(\\.[0-9]+)?,-?[0-9]+(\\.[0-9]+)?,-?[0-9]+(\\.[0-9]+)?,-?[0-9]+(\\.[0-9]+)?,-?[0-9]+(\\.[0-9]+)?$"
              },
              "codec_delay": {
                "type": "integer"
              },
              "codec_id": {
                "type": "string"
              },
              "codec_name": {
                "type": "string"
              },
              "codec_private_data": {
                "type": "string"
              },
              "codec_private_length": {
                "type": "integer",
                "minimum": 0
              },
              "content_encoding_algorithms": {
                "type": "string",
                "minLength": 1
              },
              "color_bits_per_channel": {
                "type": "integer"
              },
              "color_matrix_coefficients": {
                "type": "integer"
              },
              "color_primaries": {
                "type": "integer"
              },
              "color_range": {
                "type": "integer"
              },
              "color_transfer_characteristics": {
                "type": "integer"
              },
              "default_duration": {
                "type": "integer",
                "minimum": 0
              },
              "default_track": {
                "type": "boolean"
              },
              "display_dimensions": {
                "type": "string",
                "pattern": "^[0-9]+x[0-9]+$"
              },
              "display_unit": {
                "type": "integer",
                "minimum": 0
              },
              "enabled_track": {
                "type": "boolean"
              },
              "encoding": {
                "description": "The encoding/character set of a track containing text (e.g. subtitles) if it can be determined with confidence. For such tracks the encoding cannot be changed by the user.",
                "type": "string"
              },
              "forced_track": {
                "type": "boolean"
              },
              "flag_hearing_impaired": {
                "description": "Can be set if that track is suitable for users with hearing impairments.",
                "type": "boolean"
              },
              "flag_visual_impaired": {
                "description": "Can be set if that track is suitable for users with visual impairments.",
                "type": "boolean"
              },
              "flag_text_descriptions": {
                "description": "Can be set if that track contains textual descriptions of video content suitable for playback via a text-to-speech system for a visually-impaired user.",
                "type": "boolean"
              },
              "flag_original": {
                "description": "Can be set if that track is in the content's original language (not a translation).",
                "type": "boolean"
              },
              "flag_commentary": {
                "description": "Can be set if that track contains commentary.",
                "type": "boolean"
              },
              "language": {
                "description": "The track's language as an ISO 639-2 language code",
                "type": "string"
              },
              "language_ietf": {
                "description": "The track's language as an IETF BCP 47/RFC 5646 language tag",
                "type": "string"
              },
              "max_content_light": {
                "type": "integer"
              },
              "max_frame_light": {
                "type": "integer"
              },
              "max_luminance": {
                "type": "number"
              },
              "min_luminance": {
                "type": "number"
              },
              "minimum_timestamp": {
                "description": "The minimum timestamp in nanoseconds of all the frames of this track found within the first couple of seconds of the file",
                "type": "integer",
                "minimum": 0
              },
              "multiplexed_tracks": {
                "description": "An array of track IDs indicating which tracks were originally multiplexed within the same track in the source file",
                "type": "array",
                "items": {
                  "type": "integer",
                  "minimum": 0
                }
              },
              "number": {
                "type": "integer",
                "minimum": 0
              },
              "num_index_entries": {
                "type": "integer",
                "minimum": 0
              },
              "packetizer": {
                "type": "string",
                "minLength": 1
              },
              "pixel_dimensions": {
                "type": "string",
                "pattern": "^[0-9]+x[0-9]+$"
              },
              "program_number": {
                "description": "A unique number identifying a set of tracks that belong together; used e.g. in DVB for multiplexing multiple stations within a single transport stream",
                "type": "integer",
                "minimum": 0
              },
              "projection_pose_pitch": {
                "type": "number"
              },
              "projection_pose_roll": {
                "type": "number"
              },
              "projection_pose_yaw": {
                "type": "number"
              },
              "projection_private": {
                "type": "string",
                "pattern": "^([0-9A-F]{2})*$"
              },
              "projection_type": {
                "type": "integer"
              },
              "stereo_mode": {
                "type": "integer",
                "minimum": 0
              },
              "stream_id": {
                "description": "A format-specific ID identifying a track, possibly in combination with a 'sub_stream_id' (e.g. the program ID in an MPEG transport stream)",
                "type": "integer",
                "minimum": 0
              },
              "sub_stream_id": {
                "description": "A format-specific ID identifying a track together with a 'stream_id'",
                "type": "integer",
                "minimum": 0
              },
              "teletext_page": {
                "type": "integer",
                "minimum": 0
              },
              "text_subtitles": {
                "type": "boolean"
              },
              "track_name": {
                "type": "string"
              },
              "uid": {
                "type": "integer",
                "minimum": 0
              },
              "white_color_coordinates": {
                "type": "string",
                "pattern": "^-?[0-9]+(\\.[0-9]+)?,-?[0-9]+(\\.[0-9]+)?$"
              }
            },
            "additionalProperties": false
          }
        },
        "additionalProperties": false,
        "required": [
          "codec",
          "id",
          "type"
        ]
      }
    },
    "warnings": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  }
}