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[ffmpeg] Modernize

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This commit is contained in:
Philipp Hagemeister 2014-11-26 13:05:11 +01:00
parent d3b5101a91
commit 3aa578cad2
1 changed files with 28 additions and 26 deletions
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54
youtube_dl/postprocessor/ffmpeg.py
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@ -1,3 +1,5 @@
from __future__ import unicode_literals
import os import os
import subprocess import subprocess
import sys import sys
@ -33,12 +35,12 @@ class FFmpegPostProcessor(PostProcessor):
def check_version(self): def check_version(self):
if not self._executable: if not self._executable:
raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.') raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.')
REQUIRED_VERSION = '1.0' REQUIRED_VERSION = '1.0'
if is_outdated_version( if is_outdated_version(
self._versions[self._executable], REQUIRED_VERSION): 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warning = u'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % ( warning = 'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.'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._executable, self._executable, REQUIRED_VERSION)
if self._downloader: if self._downloader:
self._downloader.report_warning(warning) self._downloader.report_warning(warning)
@ -84,7 +86,7 @@ class FFmpegPostProcessor(PostProcessor):
[encodeFilename(self._ffmpeg_filename_argument(out_path), True)]) [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
if self._downloader.params.get('verbose', False): if self._downloader.params.get('verbose', False):
self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd)) self._downloader.to_screen('[debug] ffmpeg command line: %s' % shell_quote(cmd))
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate() stdout, stderr = p.communicate()
if p.returncode != 0: if p.returncode != 0:
@ -100,8 +102,8 @@ class FFmpegPostProcessor(PostProcessor):
def _ffmpeg_filename_argument(self, fn): def _ffmpeg_filename_argument(self, fn):
# ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
if fn.startswith(u'-'): if fn.startswith('-'):
return u'./' + fn return './' + fn
return fn return fn
@ -117,7 +119,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
def get_audio_codec(self, path): def get_audio_codec(self, path):
if not self._probe_executable: if not self._probe_executable:
raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.') raise PostProcessingError('ffprobe or avprobe not found. Please install one.')
try: try:
cmd = [ cmd = [
self._probe_executable, self._probe_executable,
@ -153,7 +155,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
filecodec = self.get_audio_codec(path) filecodec = self.get_audio_codec(path)
if filecodec is None: if filecodec is None:
raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe') raise PostProcessingError('WARNING: unable to obtain file audio codec with ffprobe')
uses_avconv = self._uses_avconv() uses_avconv = self._uses_avconv()
more_opts = [] more_opts = []
@ -202,7 +204,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
extension = 'wav' extension = 'wav'
more_opts += ['-f', 'wav'] more_opts += ['-f', 'wav']
prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups prefix, sep, ext = path.rpartition('.') # not os.path.splitext, since the latter does not work on unicode in all setups
new_path = prefix + sep + extension new_path = prefix + sep + extension
# If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly. # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
@ -211,16 +213,16 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
try: try:
if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)): if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path) self._downloader.to_screen('[youtube] Post-process file %s exists, skipping' % new_path)
else: else:
self._downloader.to_screen(u'[' + self._executable + '] Destination: ' + new_path) self._downloader.to_screen('[' + self._executable + '] Destination: ' + new_path)
self.run_ffmpeg(path, new_path, acodec, more_opts) self.run_ffmpeg(path, new_path, acodec, more_opts)
except: except:
etype, e, tb = sys.exc_info() etype, e, tb = sys.exc_info()
if isinstance(e, AudioConversionError): if isinstance(e, AudioConversionError):
msg = u'audio conversion failed: ' + e.msg msg = 'audio conversion failed: ' + e.msg
else: else:
msg = u'error running ' + self._executable msg = 'error running ' + self._executable
raise PostProcessingError(msg) raise PostProcessingError(msg)
# Try to update the date time for extracted audio file. # Try to update the date time for extracted audio file.
@ -228,7 +230,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
try: try:
os.utime(encodeFilename(new_path), (time.time(), information['filetime'])) os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
except: except:
self._downloader.report_warning(u'Cannot update utime of audio file') self._downloader.report_warning('Cannot update utime of audio file')
information['filepath'] = new_path information['filepath'] = new_path
return self._nopostoverwrites, information return self._nopostoverwrites, information
@ -241,12 +243,12 @@ class FFmpegVideoConvertor(FFmpegPostProcessor):
def run(self, information): def run(self, information):
path = information['filepath'] path = information['filepath']
prefix, sep, ext = path.rpartition(u'.') prefix, sep, ext = path.rpartition('.')
outpath = prefix + sep + self._preferedformat outpath = prefix + sep + self._preferedformat
if information['ext'] == self._preferedformat: 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)) self._downloader.to_screen('[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
return True, information return True, information
self._downloader.to_screen(u'[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath) self._downloader.to_screen('[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath)
self.run_ffmpeg(path, outpath, []) self.run_ffmpeg(path, outpath, [])
information['filepath'] = outpath information['filepath'] = outpath
information['format'] = self._preferedformat information['format'] = self._preferedformat
@ -453,11 +455,11 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
return cls._lang_map.get(code[:2]) return cls._lang_map.get(code[:2])
def run(self, information): def run(self, information):
if information['ext'] != u'mp4': if information['ext'] != 'mp4':
self._downloader.to_screen(u'[ffmpeg] Subtitles can only be embedded in mp4 files') self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4 files')
return True, information return True, information
if not information.get('subtitles'): if not information.get('subtitles'):
self._downloader.to_screen(u'[ffmpeg] There aren\'t any subtitles to embed') self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to embed')
return True, information return True, information
sub_langs = [key for key in information['subtitles']] sub_langs = [key for key in information['subtitles']]
@ -472,8 +474,8 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code]) opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
opts.extend(['-f', 'mp4']) opts.extend(['-f', 'mp4'])
temp_filename = filename + u'.temp' temp_filename = filename + '.temp'
self._downloader.to_screen(u'[ffmpeg] Embedding subtitles in \'%s\'' % filename) self._downloader.to_screen('[ffmpeg] Embedding subtitles in \'%s\'' % filename)
self.run_ffmpeg_multiple_files(input_files, temp_filename, opts) self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
os.remove(encodeFilename(filename)) os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename)) os.rename(encodeFilename(temp_filename), encodeFilename(filename))
@ -494,13 +496,13 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
metadata['artist'] = info['uploader_id'] metadata['artist'] = info['uploader_id']
if not metadata: if not metadata:
self._downloader.to_screen(u'[ffmpeg] There isn\'t any metadata to add') self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add')
return True, info return True, info
filename = info['filepath'] filename = info['filepath']
temp_filename = prepend_extension(filename, 'temp') temp_filename = prepend_extension(filename, 'temp')
if info['ext'] == u'm4a': if info['ext'] == 'm4a':
options = ['-vn', '-acodec', 'copy'] options = ['-vn', '-acodec', 'copy']
else: else:
options = ['-c', 'copy'] options = ['-c', 'copy']
@ -508,7 +510,7 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
for (name, value) in metadata.items(): for (name, value) in metadata.items():
options.extend(['-metadata', '%s=%s' % (name, value)]) options.extend(['-metadata', '%s=%s' % (name, value)])
self._downloader.to_screen(u'[ffmpeg] Adding metadata to \'%s\'' % filename) self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename)
self.run_ffmpeg(filename, temp_filename, options) self.run_ffmpeg(filename, temp_filename, options)
os.remove(encodeFilename(filename)) os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename)) os.rename(encodeFilename(temp_filename), encodeFilename(filename))
@ -519,7 +521,7 @@ class FFmpegMergerPP(FFmpegPostProcessor):
def run(self, info): def run(self, info):
filename = info['filepath'] filename = info['filepath']
args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0', '-shortest'] args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0', '-shortest']
self._downloader.to_screen(u'[ffmpeg] Merging formats into "%s"' % filename) self._downloader.to_screen('[ffmpeg] Merging formats into "%s"' % filename)
self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args) self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
return True, info return True, info
@ -530,7 +532,7 @@ class FFmpegAudioFixPP(FFmpegPostProcessor):
temp_filename = prepend_extension(filename, 'temp') temp_filename = prepend_extension(filename, 'temp')
options = ['-vn', '-acodec', 'copy'] options = ['-vn', '-acodec', 'copy']
self._downloader.to_screen(u'[ffmpeg] Fixing audio file "%s"' % filename) self._downloader.to_screen('[ffmpeg] Fixing audio file "%s"' % filename)
self.run_ffmpeg(filename, temp_filename, options) self.run_ffmpeg(filename, temp_filename, options)
os.remove(encodeFilename(filename)) os.remove(encodeFilename(filename))