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check for avconv and ffmpeg, use as available; closes #344

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This commit is contained in:
Filippo Valsorda 2012-05-31 21:03:29 +02:00
parent a047951477
commit 0b976545c7
1 changed files with 25 additions and 19 deletions
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44
youtube_dl/PostProcessor.py
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@ -60,7 +60,6 @@ class AudioConversionError(BaseException):
self.message = message
class FFmpegExtractAudioPP(PostProcessor):
def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, keepvideo=False):
PostProcessor.__init__(self, downloader)
if preferredcodec is None:
@ -68,11 +67,22 @@ class FFmpegExtractAudioPP(PostProcessor):
self._preferredcodec = preferredcodec
self._preferredquality = preferredquality
self._keepvideo = keepvideo
self._exes = self.detect_executables()
@staticmethod
def get_audio_codec(path):
def detect_executables():
available = {'avprobe' : False, 'avconv' : False, 'ffmpeg' : False, 'ffprobe' : False}
for path in os.environ["PATH"].split(os.pathsep):
for program in available.keys():
exe_file = os.path.join(path, program)
if os.path.isfile(exe_file) and os.access(exe_file, os.X_OK):
available[program] = exe_file
return available
def get_audio_codec(self, path):
if not self._exes['ffprobe'] and not self._exes['avprobe']: return None
try:
cmd = ['ffprobe', '-show_streams', '--', encodeFilename(path)]
cmd = [self._exes['avprobe'] or self._exes['ffprobe'], '-show_streams', '--', encodeFilename(path)]
handle = subprocess.Popen(cmd, stderr=file(os.path.devnull, 'w'), stdout=subprocess.PIPE)
output = handle.communicate()[0]
if handle.wait() != 0:
@ -87,22 +97,18 @@ class FFmpegExtractAudioPP(PostProcessor):
return audio_codec
return None
@staticmethod
def run_ffmpeg(path, out_path, codec, more_opts):
def run_ffmpeg(self, path, out_path, codec, more_opts):
if not self._exes['ffmpeg'] and not self._exes['avconv']:
raise AudioConversionError('ffmpeg or avconv not found. Please install avconv.')
if codec is None:
acodec_opts = []
else:
acodec_opts = ['-acodec', codec]
cmd = ['ffmpeg', '-y', '-i', encodeFilename(path), '-vn'] + acodec_opts + more_opts + ['--', encodeFilename(out_path)]
try:
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout,stderr = p.communicate()
except (IOError, OSError):
e = sys.exc_info()[1]
if isinstance(e, OSError) and e.errno == 2:
raise AudioConversionError('ffmpeg not found. Please install ffmpeg.')
else:
raise e
cmd = ([self._exes['avconv'] or self._exes['ffmpeg'], '-y', '-i', encodeFilename(path), '-vn']
+ acodec_opts + more_opts +
['--', encodeFilename(out_path)])
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout,stderr = p.communicate()
if p.returncode != 0:
msg = stderr.strip().split('\n')[-1]
raise AudioConversionError(msg)
@ -121,7 +127,7 @@ class FFmpegExtractAudioPP(PostProcessor):
# Lossless, but in another container
acodec = 'copy'
extension = self._preferredcodec
more_opts = ['-absf', 'aac_adtstoasc']
more_opts = [self._exes['avconv'] and '-bsf:a' or '-absf', 'aac_adtstoasc']
elif filecodec in ['aac', 'mp3', 'vorbis']:
# Lossless if possible
acodec = 'copy'
@ -136,18 +142,18 @@ class FFmpegExtractAudioPP(PostProcessor):
extension = 'mp3'
more_opts = []
if self._preferredquality is not None:
more_opts += ['-ab', self._preferredquality]
more_opts += [self._exes['avconv'] and '-b:a' or '-ab', self._preferredquality]
else:
# We convert the audio (lossy)
acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
extension = self._preferredcodec
more_opts = []
if self._preferredquality is not None:
more_opts += ['-ab', self._preferredquality]
more_opts += [self._exes['avconv'] and '-b:a' or '-ab', self._preferredquality]
if self._preferredcodec == 'aac':
more_opts += ['-f', 'adts']
if self._preferredcodec == 'm4a':
more_opts += ['-absf', 'aac_adtstoasc']
more_opts += [self._exes['avconv'] and '-bsf:a' or '-absf', 'aac_adtstoasc']
if self._preferredcodec == 'vorbis':
extension = 'ogg'
if self._preferredcodec == 'wav':