Sizing Up My Queue


Category: Code
Tags:  Ruby    media   podcasts    yak shave  

I have a folder named “queue” that I download podcasts, videos, and books to. It occurred to me that it hasn’t been empty for years. That’s OK, the world is a very interesting place, and I care that I produce things, not just consume them.

But I wondered how big the queue is. Not in terms of disk space, that doesn’t tell me much because the different encoding rates and formats result in very different file sizes. (The disk space command is df -h, if you need it.) In terms of time.

So I wrote a script. I hacked it all out for a first pass, then tidied it into functions. It depends on having ffmpeg installed, and here’s the source:

#!/bin/ruby

MEDIA_EXTENSIONS = [’*.mp3’, ‘*.ogg’, ‘*.ogv’, ‘*.avi’, ‘*.mp4’, ‘*.webm’, ‘*.flv’, ‘*.mov’, ‘*.mpeg’, ‘*.mkv’, ‘*.mov’]

MINUTE = 60 HOUR = MINUTE * 60 DAY = HOUR * 24

def seconds_to_duration seconds days = seconds / DAY seconds -= days * DAY

hours = seconds / HOUR seconds -= hours * HOUR

minutes = seconds / MINUTE seconds -= minutes * MINUTE

“%dd:%02dh:%02dm:%02ds” % [days, hours, minutes, seconds] end

def duration_of_file filename raw_duration = `ffprobe “#{filename}” 2>&1 | grep Duration | cut -d’ ‘ -f 4 | cut -d’,’ -f 1` h, m, s, x = raw_duration.split(/[:.]/) h, m, s = h.to_i, m.to_i, s.to_i seconds = s + m * 60 + h * 60 * 60 seconds end

def duration_of_files path, spec spec.map! { |s| “**/**/#{s}” } previous = Dir.getwd Dir.chdir path count = 0 total = 0 Dir[*spec].each do |filename| count += 1 seconds = duration_of_file filename total += seconds end Dir.chdir previous return count, total end

def report_on path, spec count, total = duration_of_files path, spec puts “#{path}: #{count} files, #{total} seconds = #{seconds_to_duration total} total duration” end

dirs = ARGV.empty? ? [Dir.pwd] : ARGV dirs.each do |dir| report_on dir, MEDIA_EXTENSIONS end

Running it on my queue directory took a minute or so, then reported:

queue: 877 files, 674007 seconds = 7d:19h:13m:27s total duration

Looks like I have a bit of material ahead of me...