From 4eb7f1d12e512fa69f90d98b2e6e97fa0c04e7a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaime=20Marqui=CC=81nez=20Ferra=CC=81ndiz?=
 <jaime.marquinez.ferrandiz@gmail.com>
Date: Sat, 12 Oct 2013 13:49:27 +0200
Subject: [PATCH] FFmpegPostProcessor: print the command line used if the
 --verbose option is given

---
 youtube_dl/PostProcessor.py | 2 ++
 youtube_dl/utils.py         | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/youtube_dl/PostProcessor.py b/youtube_dl/PostProcessor.py
index fbf8a7f98..0479591f0 100644
--- a/youtube_dl/PostProcessor.py
+++ b/youtube_dl/PostProcessor.py
@@ -83,6 +83,8 @@ class FFmpegPostProcessor(PostProcessor):
                + opts +
                [encodeFilename(self._ffmpeg_filename_argument(out_path))])
 
+        if self._downloader.params.get('verbose', False):
+            self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd))
         p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         stdout,stderr = p.communicate()
         if p.returncode != 0:
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 82a1daeb9..0457f3ded 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -9,6 +9,7 @@ import io
 import json
 import locale
 import os
+import pipes
 import platform
 import re
 import socket
@@ -927,3 +928,7 @@ class locked_file(object):
 
     def read(self, *args):
         return self.f.read(*args)
+
+
+def shell_quote(args):
+    return ' '.join(map(pipes.quote, args))