mp3_info 0.2.3

A package for extracting key meta information from an MP3 file including sample rate, bitrate and duration. Written in pure Dart.

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

• ✅ MP3 Key fields
  • ✅ MPEG version
  • ✅ MPEG layer version
  • ✅ Sample rate
  • ✅ Bitrate
  • ✅ Duration
  • ✅ CRC check
  • ✅ Channel mode
  • ❌ Mode extension
  • ✅ Copyright flag
  • ✅ Origin (original/copy))
  • ✅ Emphasis
• ✅ CBR (Constant Bitrate) support
• ❌ VBR (Variable Bitrate) support
• ❌ ID3 v1 Tag support
• ❌ ID3 v2 Tag support
  • ❌ AENC Audio encryption
  • ❌ APIC Attached picture
  • ✅ CHAP Chapters
  • ✅ 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
  • ✅ TALB Album/Movie/Show title
  • ✅ TBPM BPM (beats per minute)
  • ✅ TCOM Composer
  • ✅ TCON Content type
  • ✅ TCOP Copyright message
  • ✅ TDAT Date
  • ✅ TDLY Playlist delay
  • ✅ TENC Encoded by
  • ✅ TEXT Lyricist/Text writer
  • ✅ TFLT File type
  • ✅ TIME Time
  • ✅ TIT1 Content group description
  • ✅ TIT2 Title/songname/content description
  • ✅ TIT3 Subtitle/Description refinement
  • ✅ TKEY Initial key
  • ✅ TLAN Language(s)
  • ✅ TLEN Length
  • ✅ TMED Media type
  • ✅ TOAL Original album/movie/show title
  • ✅ TOFN Original filename
  • ✅ TOLY Original lyricist(s)/text writer(s)
  • ✅ TOPE Original artist(s)/performer(s)
  • ✅ TORY Original release year
  • ✅ TOWN File owner/licensee
  • ✅ TPE1 Lead performer(s)/Soloist(s)
  • ✅ TPE2 Band/orchestra/accompaniment
  • ✅ TPE3 Conductor/performer refinement
  • ✅ TPE4 Interpreted, remixed, or otherwise modified by
  • ✅ TPOS Part of a set
  • ✅ TPUB Publisher
  • ✅ TRCK Track number/Position in set
  • ✅ TRDA Recording dates
  • ✅ TRSN Internet radio station name
  • ✅ TRSO Internet radio station owner
  • ✅ TSIZ Size
  • ✅ TSRC ISRC (international standard recording code)
  • ✅ TSSE Software/Hardware and settings used for encoding
  • ✅ TYER Year
  • ✅ 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