Analysis of Music Files

analyze_collection.sh

#!/bin/sh

# This script will create a Collection.csv file with the following format:
# "/path/to/music/file",type,rate,duration,bitrate

# Note: ffmpeg needs to be installed (for ffprobe command)

# 1. number of files of each type (mp3 160, 192, vbr, 320; aac 192, 256)
# 2. average duration of tracks (of files of each type)
# 3. from 1. and 2. and using http://www.theaudioarchive.com/TAA_Resources_File_Size.htm 
# can derive estimated size of collection in different formats, e.g. 320kbps mp3, or flac

# See https://trac.ffmpeg.org/wiki/FFprobeTips for streams to show

find /path/to/your/music/collection -type f \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.flac' \) -printf '"%p",' -exec \
  ffprobe -v quiet -select_streams a:0 -show_entries stream=codec_name,codec_time_base,duration,bit_rate -of csv=p=0 {} \; > Collection.csv