diff --git a/app/models/asciicast.rb b/app/models/asciicast.rb
index f0d5b3c..9d8e2e1 100644
--- a/app/models/asciicast.rb
+++ b/app/models/asciicast.rb
@@ -6,4 +6,18 @@ class Asciicast < ActiveRecord::Base
 
   validates :stdout, :stdout_timing, :presence => true
   validates :terminal_columns, :terminal_lines, :duration, :presence => true
+
+  def meta=(file)
+    data = JSON.parse(file.tempfile.read)
+
+    self.duration         = data['duration']
+    self.recorded_at      = data['recorded_at']
+    self.title            = data['title']
+    self.command          = data['command']
+    self.shell            = data['shell']
+    self.uname            = data['uname']
+    self.terminal_lines   = data['term']['lines']
+    self.terminal_columns = data['term']['columns']
+    self.terminal_type    = data['term']['type']
+  end
 end