mp3_info

MP3 Info

Processes an MP3 file to extract key meta information such as MPEG version, MPEG layer version, bitrate, sample rate and duration. Can optionally process ID3 tags.

Usage

A simple usage example:

import 'dart:io';

import 'package:mp3_info/mp3_info.dart';

main() {
  MP3Info mp3 = MP3Processor.fromFile(File("test_files/test_128kpbs_441khz_stereo_10s.mp3"));

  print('MP3: test_128kpbs_441khz_stereo_10s.mp3');

  switch(mp3.sampleRate) {
    case SampleRate.rate_32000:
      print('Sample rate: 32KHz');
      break;
    case SampleRate.rate_44100:
      print('Sample rate: 44.1KHz');
      break;
    case SampleRate.rate_48000:
      print('Sample rate: 48KHz');
      break;
  }

  print('Bit rate: ${mp3.bitrate}bps');
  print('Duration: ${mp3.duration}');
}

Task list

• [x] MP3 Key fields
  • [x] MPEG version
  • [x] MPEG layer version
  • [x] Sample rate
  • [x] Bitrate
  • [x] Duration
  • [x] CRC check
  • [x] Channel mode
  • [ ] Mode extension
  • [x] Copyright flag
  • [x] Origin (original/copy))
  • [x] Emphasis
• [x] CBR (Constant Bitrate) support
• [ ] VBR (Variable Bitrate) support
• [ ] ID3 v1 Tag support
• [ ] ID3 v2 Tag support
  • [ ] AENC Audio encryption
  • [ ] APIC Attached picture
  • [x] CHAP Chapters
  • [x] COMM Comments
  • [ ] COMR Commercial frame
  • [ ] ENCR Encryption method registration
  • [ ] EQUA Equalization
  • [ ] ETCO Event timing codes
  • [ ] GEOB General encapsulated object
  • [ ] GRID Group identification registration
  • [ ] IPLS Involved people list
  • [ ] LINK Linked information
  • [ ] MCDI Music CD identifier
  • [ ] MLLT MPEG location lookup table
  • [ ] OWNE Ownership frame
  • [ ] PRIV Private frame
  • [ ] PCNT Play counter
  • [ ] POPM Popularimeter
  • [ ] POSS Position synchronisation frame
  • [ ] RBUF Recommended buffer size
  • [ ] RVAD Relative volume adjustment
  • [ ] RVRB Reverb
  • [ ] SYLT Synchronized lyric/text
  • [ ] SYTC Synchronized tempo codes
  • [x] TALB Album/Movie/Show title
  • [x] TBPM BPM (beats per minute)
  • [x] TCOM Composer
  • [x] TCON Content type
  • [x] TCOP Copyright message
  • [x] TDAT Date
  • [x] TDLY Playlist delay
  • [x] TENC Encoded by
  • [x] TEXT Lyricist/Text writer
  • [x] TFLT File type
  • [x] TIME Time
  • [x] TIT1 Content group description
  • [x] TIT2 Title/songname/content description
  • [x] TIT3 Subtitle/Description refinement
  • [x] TKEY Initial key
  • [x] TLAN Language(s)
  • [x] TLEN Length
  • [x] TMED Media type
  • [x] TOAL Original album/movie/show title
  • [x] TOFN Original filename
  • [x] TOLY Original lyricist(s)/text writer(s)
  • [x] TOPE Original artist(s)/performer(s)
  • [x] TORY Original release year
  • [x] TOWN File owner/licensee
  • [x] TPE1 Lead performer(s)/Soloist(s)
  • [x] TPE2 Band/orchestra/accompaniment
  • [x] TPE3 Conductor/performer refinement
  • [x] TPE4 Interpreted, remixed, or otherwise modified by
  • [x] TPOS Part of a set
  • [x] TPUB Publisher
  • [x] TRCK Track number/Position in set
  • [x] TRDA Recording dates
  • [x] TRSN Internet radio station name
  • [x] TRSO Internet radio station owner
  • [x] TSIZ Size
  • [x] TSRC ISRC (international standard recording code)
  • [x] TSSE Software/Hardware and settings used for encoding
  • [x] TYER Year
  • [x] TXXX User defined text information frame
  • [ ] UFID Unique file identifier
  • [ ] USER Terms of use
  • [ ] USLT Unsychronized lyric/text transcription
  • [ ] WCOM WCOM Commercial information
  • [ ] WCOP Copyright/Legal information
  • [ ] WOAF Official audio file webpage
  • [ ] WOAR Official artist/performer webpage
  • [ ] WOAS Official audio source webpage
  • [ ] WORS Official internet radio station homepage
  • [ ] WPAY Payment
  • [ ] WPUB Publishers official webpage
  • [ ] WXXX User defined URL link frame