Don't use 2.7+ check_output

diff --git a/youtube_dl/PostProcessor.py b/youtube_dl/PostProcessor.py
index f2e2aa1fadf5e8c8c1962ef11851820802550ce0..d14fe71a2b2fce124c8d5b8bbafeb0a0d1e7a83a 100644 (file)
--- a/youtube_dl/PostProcessor.py
+++ b/youtube_dl/PostProcessor.py
@@ -73,7 +73,7 @@ class FFmpegExtractAudioPP(PostProcessor):
        def detect_executables():
                def executable(exe):
                        try:
-                               subprocess.check_output([exe, '-version'])
+                               subprocess.Popen([exe, '-version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
                        except OSError:
                                return False
                        return exe