import os
+import re
import subprocess
import sys
import time
)
+def get_version(executable):
+ """ Returns the version of the specified executable,
+ or False if the executable is not present """
+ try:
+ out, err = subprocess.Popen(
+ [executable, '-version'],
+ stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
+ except OSError:
+ return False
+ firstline = out.partition(b'\n')[0].decode('ascii', 'ignore')
+ m = re.search(r'version\s+([0-9._-a-zA-Z]+)', firstline)
+ if not m:
+ return u'present'
+ else:
+ return m.group(1)
+
+
class FFmpegPostProcessorError(PostProcessingError):
pass
class FFmpegPostProcessor(PostProcessor):
def __init__(self, downloader=None, deletetempfiles=False):
PostProcessor.__init__(self, downloader)
- self._exes = self.detect_executables()
+ self._versions = self.get_versions()
self._deletetempfiles = deletetempfiles
@staticmethod
- def detect_executables():
+ def get_versions():
programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
- return dict((program, check_executable(program, ['-version'])) for program in programs)
+ return dict((program, get_version(program)) for program in programs)
def _get_executable(self):
if self._downloader.params.get('prefer_ffmpeg', False):
- return self._exes['ffmpeg'] or self._exes['avconv']
+ prefs = ('ffmpeg', 'avconv')
else:
- return self._exes['avconv'] or self._exes['ffmpeg']
+ prefs = ('avconv', 'ffmpeg')
+ for p in prefs:
+ if self._versions[p]:
+ return p
+ return None
def _uses_avconv(self):
- return self._get_executable() == self._exes['avconv']
+ return self._get_executable() == 'avconv'
def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
if not self._get_executable():