-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from __future__ import absolute_import
-
import os
import subprocess
import sys
one has an extra field called "filepath" that points to the
downloaded file.
- When this method returns None, the postprocessing chain is
- stopped. However, this method may return an information
- dictionary that will be passed to the next postprocessing
- object in the chain. It can be the one it received after
- changing some fields.
+ This method returns a tuple, the first element of which describes
+ whether the original file should be kept (i.e. not deleted - None for
+ no preference), and the second of which is the updated information.
In addition, this method may raise a PostProcessingError
- exception that will be taken into account by the downloader
- it was called from.
+ exception if post processing fails.
"""
- return information # by default, do nothing
+ return None, information # by default, keep file and do nothing
-class FFmpegPostProcessorError(BaseException):
- def __init__(self, message):
- self.message = message
+class FFmpegPostProcessorError(PostProcessingError):
+ pass
-class AudioConversionError(BaseException):
- def __init__(self, message):
- self.message = message
+class AudioConversionError(PostProcessingError):
+ pass
class FFmpegPostProcessor(PostProcessor):
def __init__(self,downloader=None):
def run_ffmpeg(self, path, out_path, opts):
if not self._exes['ffmpeg'] and not self._exes['avconv']:
- raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.')
+ raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.')
cmd = ([self._exes['avconv'] or self._exes['ffmpeg'], '-y', '-i', encodeFilename(path)]
+ opts +
[encodeFilename(self._ffmpeg_filename_argument(out_path))])
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout,stderr = p.communicate()
if p.returncode != 0:
+ stderr = stderr.decode('utf-8', 'replace')
msg = stderr.strip().split('\n')[-1]
raise FFmpegPostProcessorError(msg)
return fn
class FFmpegExtractAudioPP(FFmpegPostProcessor):
- def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, keepvideo=False, nopostoverwrites=False):
+ def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
FFmpegPostProcessor.__init__(self, downloader)
if preferredcodec is None:
preferredcodec = 'best'
self._preferredcodec = preferredcodec
self._preferredquality = preferredquality
- self._keepvideo = keepvideo
self._nopostoverwrites = nopostoverwrites
def get_audio_codec(self, path):
- if not self._exes['ffprobe'] and not self._exes['avprobe']: return None
+ if not self._exes['ffprobe'] and not self._exes['avprobe']:
+ raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
try:
cmd = [self._exes['avprobe'] or self._exes['ffprobe'], '-show_streams', encodeFilename(self._ffmpeg_filename_argument(path))]
handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
filecodec = self.get_audio_codec(path)
if filecodec is None:
- self._downloader.to_stderr(u'WARNING: unable to obtain file audio codec with ffprobe')
- return None
+ raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe')
more_opts = []
if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
- if self._preferredcodec == 'm4a' and filecodec == 'aac':
+ if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
# Lossless, but in another container
acodec = 'copy'
- extension = self._preferredcodec
+ extension = 'm4a'
more_opts = [self._exes['avconv'] and '-bsf:a' or '-absf', 'aac_adtstoasc']
elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
# Lossless if possible
prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
new_path = prefix + sep + extension
+
+ # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
+ if new_path == path:
+ self._nopostoverwrites = True
+
try:
if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path)
except:
etype,e,tb = sys.exc_info()
if isinstance(e, AudioConversionError):
- self._downloader.to_stderr(u'ERROR: audio conversion failed: ' + e.message)
+ msg = u'audio conversion failed: ' + e.message
else:
- self._downloader.to_stderr(u'ERROR: error running ' + (self._exes['avconv'] and 'avconv' or 'ffmpeg'))
- return None
+ msg = u'error running ' + (self._exes['avconv'] and 'avconv' or 'ffmpeg')
+ raise PostProcessingError(msg)
# Try to update the date time for extracted audio file.
if information.get('filetime') is not None:
try:
os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
except:
- self._downloader.to_stderr(u'WARNING: Cannot update utime of audio file')
-
- if not self._keepvideo:
- try:
- os.remove(encodeFilename(path))
- except (IOError, OSError):
- self._downloader.to_stderr(u'WARNING: Unable to remove downloaded video file')
- return None
+ self._downloader.report_warning(u'Cannot update utime of audio file')
information['filepath'] = new_path
- return information
+ return self._nopostoverwrites,information
class FFmpegVideoConvertor(FFmpegPostProcessor):
def __init__(self, downloader=None,preferedformat=None):
- FFmpegPostProcessor.__init__(self,downloader)
+ super(FFmpegVideoConvertor, self).__init__(downloader)
self._preferedformat=preferedformat
def run(self, information):
path = information['filepath']
prefix, sep, ext = path.rpartition(u'.')
outpath = prefix + sep + self._preferedformat
- if not self._preferedformat or information['format'] == self._preferedformat:
- return information
- self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['format'], self._preferedformat) +outpath)
+ if information['ext'] == self._preferedformat:
+ self._downloader.to_screen(u'[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
+ return True,information
+ self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) +outpath)
self.run_ffmpeg(path, outpath, [])
information['filepath'] = outpath
information['format'] = self._preferedformat
- return information
+ information['ext'] = self._preferedformat
+ return False,information