diff --git a/count.rb b/count.rb
new file mode 100755
index 0000000..648e6b4
--- /dev/null
+++ b/count.rb
@@ -0,0 +1,37 @@
+#!/usr/bin/env ruby
+
+require 'json'
+
+videos = {}
+total = 0
+
+failures = []
+
+Dir["data/*.json"].each do |f|
+  data = JSON.parse(File.read(f))["data"]
+
+  data.each { |x| videos[x["id"]] = x }
+  total += data.size
+rescue
+  failures << File.basename(f)
+  pp "error parsing #{f}"
+end
+
+pp videos.size
+pp total
+
+File.write("videos.csv", videos.values.map { |video| "#{video["id"]},#{video["randname"]}\n" }.join)
+File.write("videos.jsonl", videos.values.map { |video| JSON.dump(video) + "\n" }.join)
+File.write("failures.txt", failures.map { |f| a, b = f.split("."); "#{a} #{b}\n" }.join)
+
+pp [videos.keys.min, videos.keys.max]
+
+class Fixnum
+  def mib; self * 2**20; end
+  def gib; self * 2**30; end
+  def tib; self * 2**40; end
+end
+
+puts "estimating 100mb per video:"
+puts "so far: #{videos.size * 100.mib / 1.tib} TiB"
+puts "potential: #{videos.values.map { |v| v["id"] }.max * 100.mib / 1.tib} TB"