The represents what output from m4atags, part of mediatags, should look like.

Literal Tags:

m4atags --literal ~/Music/Cascada/Evacuate\ the\ Dancefloor/01\ Evacuate\ the\ Dancefloor\ \(Radio\ Edit\).m4a

{
  "---- com.apple.iTunes;iTunSMPB": "00000000 00000840 00000028 00000000008D8B98 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000",
  "---- com.apple.iTunes;iTunNORM": "000017D8 0000182D 0000659D 00006F6B 0000687D 0000687D 00007321 000072AA 0000DC97 0000BF91",
  "©nam": "Evacuate the Dancefloor (Radio Edit)",
  "©ART": "Cascada",
  "aART": "Cascada",
  "©alb": "Evacuate the Dancefloor",
  "gnre": "Dance",
  "trkn": "1 of 10",
  "disk": "1 of 1",
  "cpil": false,
  "pgap": false,
  "©day": "2009-07-14T07:00:00Z",
  "apID": "coolaj86@gmail.com",
  "cprt": "℗ 2009 Robbins Entertainment LLC",
  "cnID": "322203070",
  "rtng": "Inoffensive",
  "atID": "27456059",
  "plID": "322202899",
  "geID": "17",
  "sfID": "United States (143441)",
  "akID": "0",
  "stik": "Normal",
  "purd": "2010-09-17 17:00:45",
  "covr": true,
  "---- com.apple.iTunes;iTunMOVI": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n<plist version=\"1.0\">\n<dict>\n  <key>asset-info</key>\n  <dict>\n    <key>file-size</key>\n    <integer>7485659</integer>\n    <key>flavor</key>\n    <string>2:256</string>\n  </dict>\n</dict>\n</plist>"
}

Verbose Tags:

This output was adapted from AtomicParsley. Some problems exist:

  • The --- tag should be grouped like either the example above or "---- com.apple.iTunes;iTunSMPB": ...
  • Where possible the text data in the tags should be output as well.
    • i.e. { "value": { "data": { "text": "Cascada", "start": ..., "length": ..., "end": ... } } }

Output:

m4atags --verbose ~/Music/Cascada/Evacuate\ the\ Dancefloor/01\ Evacuate\ the\ Dancefloor\ \(Radio\ Edit\).m4a

{
    "ftyp": {
        "start": 0,
        "length": 32,
        "end": 32 
    },
    "moov": {
        "start": 32,
        "length": 225082,
        "end": 225114,
        "value": {
            "mvhd": {
                "start": 40,
                "length": 108,
                "end": 148 
            },
            "trak": {
                "start": 148,
                "length": 71105,
                "end": 71253,
                "value": {
                    "tkhd": {
                        "start": 156,
                        "length": 92,
                        "end": 248 
                    },
                    "mdia": {
                        "start": 248,
                        "length": 71005,
                        "end": 71253,
                        "value": {
                            "mdhd": {
                                "start": 256,
                                "length": 32,
                                "end": 288 
                            },
                            "hdlr": {
                                "start": 288,
                                "length": 34,
                                "end": 322 
                            },
                            "minf": {
                                "start": 322,
                                "length": 70931,
                                "end": 71253,
                                "value": {
                                    "smhd": {
                                        "start": 330,
                                        "length": 16,
                                        "end": 346 
                                    },
                                    "dinf": {
                                        "start": 346,
                                        "length": 36,
                                        "end": 382,
                                        "value": {
                                            "dref": {
                                                "start": 354,
                                                "length": 28,
                                                "end": 382,
                                                "value": {
                                                    "url ": {
                                                        "start": 370,
                                                        "length": 12,
                                                        "end": 382 
                                                    } 
                                                }
                                            } 
                                        }
                                    },
                                    "stbl": {
                                        "start": 382,
                                        "length": 70871,
                                        "end": 71253,
                                        "value": {
                                            "stsd": {
                                                "start": 390,
                                                "length": 32871,
                                                "end": 33261,
                                                "value": {
                                                    "mp4a": {
                                                        "start": 406,
                                                        "length": 32855,
                                                        "end": 33261,
                                                        "value": {
                                                            "esds": {
                                                                "start": 442,
                                                                "length": 51,
                                                                "end": 493 
                                                            },
                                                            "pinf": {
                                                                "start": 493,
                                                                "length": 32768,
                                                                "end": 33261 
                                                            } 
                                                        }
                                                    } 
                                                }
                                            },
                                            "stts": {
                                                "start": 33261,
                                                "length": 24,
                                                "end": 33285 
                                            },
                                            "stsc": {
                                                "start": 33285,
                                                "length": 40,
                                                "end": 33325 
                                            },
                                            "stsz": {
                                                "start": 33325,
                                                "length": 36264,
                                                "end": 69589 
                                            },
                                            "stco": {
                                                "start": 69589,
                                                "length": 1664,
                                                "end": 71253 
                                            } 
                                        }
                                    } 
                                }
                            } 
                        }
                    } 
                }
            },
            "udta": {
                "start": 71253,
                "length": 153861,
                "end": 225114,
                "value": {
                    "meta": {
                        "start": 71261,
                        "length": 153853,
                        "end": 225114,
                        "value": {
                            "hdlr": {
                                "start": 71273,
                                "length": 34,
                                "end": 71307 
                            },
                            "ilst": {
                                "start": 71307,
                                "length": 151759,
                                "end": 223066,
                                "value": {
                                    "----": {
                                        "start": 71315,
                                        "length": 188,
                                        "end": 71503,
                                        "value": {
                                            "mean": {
                                                "start": 71323,
                                                "length": 28,
                                                "end": 71351 
                                            },
                                            "name": {
                                                "start": 71351,
                                                "length": 20,
                                                "end": 71371 
                                            },
                                            "data": {
                                                "start": 71371,
                                                "length": 132,
                                                "end": 71503 
                                            } 
                                        }
                                    },
                                    "----": {
                                        "start": 71503,
                                        "length": 162,
                                        "end": 71665,
                                        "value": {
                                            "mean": {
                                                "start": 71511,
                                                "length": 28,
                                                "end": 71539 
                                            },
                                            "name": {
                                                "start": 71539,
                                                "length": 20,
                                                "end": 71559 
                                            },
                                            "data": {
                                                "start": 71559,
                                                "length": 106,
                                                "end": 71665 
                                            } 
                                        }
                                    },
                                    "©nam": {
                                        "start": 71665,
                                        "length": 60,
                                        "end": 71725,
                                        "value": {
                                            "data": {
                                                "start": 71673,
                                                "length": 52,
                                                "end": 71725 
                                            } 
                                        }
                                    },
                                    "©ART": {
                                        "start": 71725,
                                        "length": 31,
                                        "end": 71756,
                                        "value": {
                                            "data": {
                                                "start": 71733,
                                                "length": 23,
                                                "end": 71756 
                                            } 
                                        }
                                    },
                                    "aART": {
                                        "start": 71756,
                                        "length": 31,
                                        "end": 71787,
                                        "value": {
                                            "data": {
                                                "start": 71764,
                                                "length": 23,
                                                "end": 71787 
                                            } 
                                        }
                                    },
                                    "©alb": {
                                        "start": 71787,
                                        "length": 47,
                                        "end": 71834,
                                        "value": {
                                            "data": {
                                                "start": 71795,
                                                "length": 39,
                                                "end": 71834 
                                            } 
                                        }
                                    },
                                    "gnre": {
                                        "start": 71834,
                                        "length": 26,
                                        "end": 71860,
                                        "value": {
                                            "data": {
                                                "start": 71842,
                                                "length": 18,
                                                "end": 71860 
                                            } 
                                        }
                                    },
                                    "trkn": {
                                        "start": 71860,
                                        "length": 32,
                                        "end": 71892,
                                        "value": {
                                            "data": {
                                                "start": 71868,
                                                "length": 24,
                                                "end": 71892 
                                            } 
                                        }
                                    },
                                    "disk": {
                                        "start": 71892,
                                        "length": 30,
                                        "end": 71922,
                                        "value": {
                                            "data": {
                                                "start": 71900,
                                                "length": 22,
                                                "end": 71922 
                                            } 
                                        }
                                    },
                                    "cpil": {
                                        "start": 71922,
                                        "length": 25,
                                        "end": 71947,
                                        "value": {
                                            "data": {
                                                "start": 71930,
                                                "length": 17,
                                                "end": 71947 
                                            } 
                                        }
                                    },
                                    "pgap": {
                                        "start": 71947,
                                        "length": 25,
                                        "end": 71972,
                                        "value": {
                                            "data": {
                                                "start": 71955,
                                                "length": 17,
                                                "end": 71972 
                                            } 
                                        }
                                    },
                                    "©day": {
                                        "start": 71972,
                                        "length": 44,
                                        "end": 72016,
                                        "value": {
                                            "data": {
                                                "start": 71980,
                                                "length": 36,
                                                "end": 72016 
                                            } 
                                        }
                                    },
                                    "apID": {
                                        "start": 72016,
                                        "length": 42,
                                        "end": 72058,
                                        "value": {
                                            "data": {
                                                "start": 72024,
                                                "length": 34,
                                                "end": 72058 
                                            } 
                                        }
                                    },
                                    "cprt": {
                                        "start": 72058,
                                        "length": 58,
                                        "end": 72116,
                                        "value": {
                                            "data": {
                                                "start": 72066,
                                                "length": 50,
                                                "end": 72116 
                                            } 
                                        }
                                    },
                                    "cnID": {
                                        "start": 72116,
                                        "length": 28,
                                        "end": 72144,
                                        "value": {
                                            "data": {
                                                "start": 72124,
                                                "length": 20,
                                                "end": 72144 
                                            } 
                                        }
                                    },
                                    "rtng": {
                                        "start": 72144,
                                        "length": 25,
                                        "end": 72169,
                                        "value": {
                                            "data": {
                                                "start": 72152,
                                                "length": 17,
                                                "end": 72169 
                                            } 
                                        }
                                    },
                                    "atID": {
                                        "start": 72169,
                                        "length": 28,
                                        "end": 72197,
                                        "value": {
                                            "data": {
                                                "start": 72177,
                                                "length": 20,
                                                "end": 72197 
                                            } 
                                        }
                                    },
                                    "plID": {
                                        "start": 72197,
                                        "length": 32,
                                        "end": 72229,
                                        "value": {
                                            "data": {
                                                "start": 72205,
                                                "length": 24,
                                                "end": 72229 
                                            } 
                                        }
                                    },
                                    "geID": {
                                        "start": 72229,
                                        "length": 28,
                                        "end": 72257,
                                        "value": {
                                            "data": {
                                                "start": 72237,
                                                "length": 20,
                                                "end": 72257 
                                            } 
                                        }
                                    },
                                    "sfID": {
                                        "start": 72257,
                                        "length": 28,
                                        "end": 72285,
                                        "value": {
                                            "data": {
                                                "start": 72265,
                                                "length": 20,
                                                "end": 72285 
                                            } 
                                        }
                                    },
                                    "akID": {
                                        "start": 72285,
                                        "length": 25,
                                        "end": 72310,
                                        "value": {
                                            "data": {
                                                "start": 72293,
                                                "length": 17,
                                                "end": 72310 
                                            } 
                                        }
                                    },
                                    "stik": {
                                        "start": 72310,
                                        "length": 25,
                                        "end": 72335,
                                        "value": {
                                            "data": {
                                                "start": 72318,
                                                "length": 17,
                                                "end": 72335 
                                            } 
                                        }
                                    },
                                    "purd": {
                                        "start": 72335,
                                        "length": 43,
                                        "end": 72378,
                                        "value": {
                                            "data": {
                                                "start": 72343,
                                                "length": 35,
                                                "end": 72378 
                                            } 
                                        }
                                    },
                                    "----": {
                                        "start": 72378,
                                        "length": 397,
                                        "end": 72775,
                                        "value": {
                                            "mean": {
                                                "start": 72386,
                                                "length": 28,
                                                "end": 72414 
                                            },
                                            "name": {
                                                "start": 72414,
                                                "length": 20,
                                                "end": 72434 
                                            },
                                            "data": {
                                                "start": 72434,
                                                "length": 341,
                                                "end": 72775 
                                            } 
                                        }
                                    },
                                    "covr": {
                                        "start": 72775,
                                        "length": 150291,
                                        "end": 223066,
                                        "value": {
                                            "data": {
                                                "start": 72783,
                                                "length": 150283,
                                                "end": 223066 
                                            } 
                                        }
                                    } 
                                }
                            },
                            "free": {
                                "start": 223066,
                                "length": 2048,
                                "end": 225114 
                            } 
                        }
                    } 
                }
            } 
        }
    },
    "free": {
        "start": 225114,
        "length": 370847,
        "end": 595961 
    },
    "mdat": {
        "start": 595961,
        "length": 6889698,
        "end": 7485659 
    }
}

By AJ ONeal

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Published

2010-11-15


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