youtube_dl/postprocessor/embedthumbnail.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4
   5 import os
   6 import subprocess
   7
   8 from .ffmpeg import FFmpegPostProcessor
   9
  10 from ..utils import (
  11     check_executable,
  12     encodeArgument,
  13     encodeFilename,
  14     PostProcessingError,
  15     prepend_extension,
  16     shell_quote
  17 )
  18
  19
  20 class EmbedThumbnailPPError(PostProcessingError):
  21     pass
  22
  23
  24 class EmbedThumbnailPP(FFmpegPostProcessor):
  25     def __init__(self, downloader=None, already_have_thumbnail=False):
  26         super(EmbedThumbnailPP, self).__init__(downloader)
  27         self._already_have_thumbnail = already_have_thumbnail
  28
  29     def run(self, info):
  30         filename = info['filepath']
  31         temp_filename = prepend_extension(filename, 'temp')
  32
  33         if not info.get('thumbnails'):
  34             self._downloader.to_screen('[embedthumbnail] There aren\'t any thumbnails to embed')
  35             return [], info
  36
  37         thumbnail_filename = info['thumbnails'][-1]['filename']
  38
  39         if not os.path.exists(encodeFilename(thumbnail_filename)):
  40             self._downloader.report_warning(
  41                 'Skipping embedding the thumbnail because the file is missing.')
  42             return [], info
  43
  44         if info['ext'] == 'mp3':
  45             options = [
  46                 '-c', 'copy', '-map', '0', '-map', '1',
  47                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']
  48
  49             self._downloader.to_screen('[ffmpeg] Adding thumbnail to "%s"' % filename)
  50
  51             self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
  52
  53             if not self._already_have_thumbnail:
  54                 os.remove(encodeFilename(thumbnail_filename))
  55             os.remove(encodeFilename(filename))
  56             os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  57
  58         elif info['ext'] in ['m4a', 'mp4']:
  59             if not check_executable('AtomicParsley', ['-v']):
  60                 raise EmbedThumbnailPPError('AtomicParsley was not found. Please install.')
  61
  62             cmd = [encodeFilename('AtomicParsley', True),
  63                    encodeFilename(filename, True),
  64                    encodeArgument('--artwork'),
  65                    encodeFilename(thumbnail_filename, True),
  66                    encodeArgument('-o'),
  67                    encodeFilename(temp_filename, True)]
  68
  69             self._downloader.to_screen('[atomicparsley] Adding thumbnail to "%s"' % filename)
  70
  71             if self._downloader.params.get('verbose', False):
  72                 self._downloader.to_screen('[debug] AtomicParsley command line: %s' % shell_quote(cmd))
  73
  74             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  75             stdout, stderr = p.communicate()
  76
  77             if p.returncode != 0:
  78                 msg = stderr.decode('utf-8', 'replace').strip()
  79                 raise EmbedThumbnailPPError(msg)
  80
  81             if not self._already_have_thumbnail:
  82                 os.remove(encodeFilename(thumbnail_filename))
  83             # for formats that don't support thumbnails (like 3gp) AtomicParsley
  84             # won't create to the temporary file
  85             if b'No changes' in stdout:
  86                 self._downloader.report_warning('The file format doesn\'t support embedding a thumbnail')
  87             else:
  88                 os.remove(encodeFilename(filename))
  89                 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  90         else:
  91             raise EmbedThumbnailPPError('Only mp3 and m4a/mp4 are supported for thumbnail embedding for now.')
  92
  93         return [], info