Remove unused imports

[youtube-dl] / youtube_dl / postprocessor / ffmpeg.py

diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index e13deab4b7b1f549a5048dc90c1fb867f69b5b2d..083c79592b54f069cc25512017260f10882fb76b 100644 (file)
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -8,7 +8,6 @@ import time
 from .common import AudioConversionError, PostProcessor
 
 from ..utils import (
-    check_executable,
     compat_subprocess_get_DEVNULL,
     encodeArgument,
     encodeFilename,
@@ -26,7 +25,7 @@ def get_version(executable):
     try:
         out, err = subprocess.Popen(
             [executable, '-version'],
-            stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
+            stdout=subprocess.PIPE, stderr=subprocess.STDOUT).communicate()
     except OSError:
         return False
     firstline = out.partition(b'\n')[0].decode('ascii', 'ignore')
@@ -42,7 +41,7 @@ class FFmpegPostProcessorError(PostProcessingError):
 
 
 class FFmpegPostProcessor(PostProcessor):
-    def __init__(self, downloader, deletetempfiles=False):
+    def __init__(self, downloader=None, deletetempfiles=False):
         PostProcessor.__init__(self, downloader)
         self._versions = self.get_versions()
         self._deletetempfiles = deletetempfiles
@@ -56,7 +55,8 @@ class FFmpegPostProcessor(PostProcessor):
                 self._versions[self._executable], REQUIRED_VERSION):
             warning = u'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
                 self._executable, self._executable, REQUIRED_VERSION)
-            self._downloader.report_warning(warning)
+            if self._downloader:
+                self._downloader.report_warning(warning)
 
     @staticmethod
     def get_versions():
@@ -74,6 +74,17 @@ class FFmpegPostProcessor(PostProcessor):
                 return p
         return None
 
+    @property
+    def _probe_executable(self):
+        if self._downloader.params.get('prefer_ffmpeg', False):
+            prefs = ('ffprobe', 'avprobe')
+        else:
+            prefs = ('avprobe', 'ffprobe')
+        for p in prefs:
+            if self._versions[p]:
+                return p
+        return None
+
     def _uses_avconv(self):
         return self._executable == 'avconv'
 
@@ -119,11 +130,12 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
         self._nopostoverwrites = nopostoverwrites
 
     def get_audio_codec(self, path):
-        if not self._exes['ffprobe'] and not self._exes['avprobe']:
+
+        if not self._probe_executable:
             raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
         try:
             cmd = [
-                self._exes['avprobe'] or self._exes['ffprobe'],
+                self._probe_executable,
                 '-show_streams',
                 encodeFilename(self._ffmpeg_filename_argument(path), True)]
             handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)