lopar/youtube-dl
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Add wav audio output

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This commit is contained in:
Philipp Hagemeister 2011-12-17 01:32:28 +01:00
parent a5647b79ce
commit 633cf7cbad
1 changed files with 32 additions and 11 deletions
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43
youtube_dl/__init__.py
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@ -3924,6 +3924,9 @@ class PostProcessor(object):
"""
return information # by default, do nothing
class AudioConversionError(BaseException):
def __init__(self, message):
self.message = message
class FFmpegExtractAudioPP(PostProcessor):
@ -3955,12 +3958,23 @@ class FFmpegExtractAudioPP(PostProcessor):
@staticmethod
def run_ffmpeg(path, out_path, codec, more_opts):
if codec is None:
acodec_opts = []
else:
acodec_opts = ['-acodec', codec]
cmd = ['ffmpeg', '-y', '-i', path, '-vn'] + acodec_opts + more_opts + ['--', out_path]
try:
cmd = ['ffmpeg', '-y', '-i', path, '-vn', '-acodec', codec] + more_opts + ['--', out_path]
ret = subprocess.call(cmd, stdout=file(os.path.devnull, 'w'), stderr=subprocess.STDOUT)
return (ret == 0)
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout,stderr = p.communicate()
except (IOError, OSError):
return False
e = sys.exc_info()[1]
if isinstance(e, OSError) and e.errno == 2:
raise AudioConversionError('ffmpeg not found. Please install ffmpeg.')
else:
raise e
if p.returncode != 0:
msg = stderr.strip().split('\n')[-1]
raise AudioConversionError(msg)
def run(self, information):
path = information['filepath']
@ -3994,7 +4008,7 @@ class FFmpegExtractAudioPP(PostProcessor):
more_opts += ['-ab', self._preferredquality]
else:
# We convert the audio (lossy)
acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'vorbis': 'libvorbis'}[self._preferredcodec]
acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
extension = self._preferredcodec
more_opts = []
if self._preferredquality is not None:
@ -4005,14 +4019,21 @@ class FFmpegExtractAudioPP(PostProcessor):
more_opts += ['-absf', 'aac_adtstoasc']
if self._preferredcodec == 'vorbis':
extension = 'ogg'
if self._preferredcodec == 'wav':
extension = 'wav'
more_opts += ['-f', 'wav']
(prefix, ext) = os.path.splitext(path)
new_path = prefix + '.' + extension
self._downloader.to_screen(u'[ffmpeg] Destination: %s' % new_path)
status = self.run_ffmpeg(path, new_path, acodec, more_opts)
if not status:
self._downloader.to_stderr(u'WARNING: error running ffmpeg')
try:
self.run_ffmpeg(path, new_path, acodec, more_opts)
except:
etype,e,tb = sys.exc_info()
if isinstance(e, AudioConversionError):
self._downloader.to_stderr(u'ERROR: audio conversion failed: ' + e.message)
else:
self._downloader.to_stderr(u'ERROR: error running ffmpeg')
return None
# Try to update the date time for extracted audio file.
@ -4251,7 +4272,7 @@ def parseOpts():
postproc.add_option('--extract-audio', action='store_true', dest='extractaudio', default=False,
help='convert video files to audio-only files (requires ffmpeg and ffprobe)')
postproc.add_option('--audio-format', metavar='FORMAT', dest='audioformat', default='best',
help='"best", "aac", "vorbis", "mp3", or "m4a"; best by default')
help='"best", "aac", "vorbis", "mp3", "m4a", or "wav"; best by default')
postproc.add_option('--audio-quality', metavar='QUALITY', dest='audioquality', default='128K',
help='ffmpeg audio bitrate specification, 128k by default')
postproc.add_option('-k', '--keep-video', action='store_true', dest='keepvideo', default=False,
@ -4397,7 +4418,7 @@ def _real_main():
except (TypeError, ValueError), err:
parser.error(u'invalid playlist end number specified')
if opts.extractaudio:
if opts.audioformat not in ['best', 'aac', 'mp3', 'vorbis', 'm4a']:
if opts.audioformat not in ['best', 'aac', 'mp3', 'vorbis', 'm4a', 'wav']:
parser.error(u'invalid audio format specified')
# File downloader