pfm — Parse FLAC Metadata

pfm (also called flacdump) is a simple command-line tool to read and display metadata from FLAC audio files, including stream info, Vorbis comments, seek tables, and embedded pictures.

Usage

flacdump.exe /path/to/flacfile.flac

Example (PowerShell)

PS C:\Users\balin\cpp\pfm> .\flacdump.exe 'C:\Users\balin\Music\1983.05.13 (95059) UCB Greek Theater - Berkeley, CA\101 Cold Rain and Snow.flac'

Output

Block offset: 4    Block Type: 0, Length: 34       STREAMINFO
Minimum Block Size: 4608
Maximum Block Size: 4608
Minimum Frame Size: 3397
Maximum Frame Size: 13994
Sample Rate: 44100
Channels: 2
Bits per Sample: 16
Total Samples: 21806568
Block offset: 42   Block Type: 3, Length: 882      SEEKTABLE
Block offset: 928  Block Type: 4, Length: 444      VORBIS_COMMENT
Vendor Length: 32
Vendor String: reference libFLAC 1.1.2 20050205
Number of comments: 8
album=1983-05-13 Berkeley, CA None (95059)
artist=Grateful Dead
albumartist=Grateful Dead
comment=flac16; Recording Info: SBD -> Master Cassette -> PCM -> Apogee Ensemble -> AIFF; Transfer Info: AIFF -> Adobe Audition v1.5 -> Samplitude Professional v10.1 -> FLAC; All Transfers and Mastering By Charlie Miller
genre=gd1983
title=Cold Rain And Snow
discnumber=1/3
tracknumber=102
Block offset: 1376     Block Type: 6, Length: 108350   PICTURE
Block offset: 109730   Block Type: 1, Length: 55504    PADDING

Features

• Parses and displays:
  • STREAMINFO block
  • SEEKTABLE block
  • VORBIS_COMMENT block (including vendor and all comments)
  • PICTURE block (basic info)
  • Optionally exports embedded pictures
  • PADDING and other blocks with type/length
• Works with standard FLAC files
• Lightweight and easy to integrate or extend

Build

This tool is written in C++ and depends only on the standard library. To compile:

g++ flacdump.cpp streaminfo.cpp -o flacdump

Or using MSVC:

cl flacdump.cpp streaminfo.cpp /Fe:flacdump.exe

License

MIT License