yt_dlp/postprocessor/embedthumbnail.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import base64
   5 import imghdr
   6 import os
   7 import subprocess
   8 import re
   9
  10 try:
  11     from mutagen.flac import Picture, FLAC
  12     from mutagen.mp4 import MP4, MP4Cover
  13     from mutagen.oggopus import OggOpus
  14     from mutagen.oggvorbis import OggVorbis
  15     has_mutagen = True
  16 except ImportError:
  17     has_mutagen = False
  18
  19 from .common import PostProcessor
  20 from .ffmpeg import (
  21     FFmpegPostProcessor,
  22     FFmpegThumbnailsConvertorPP,
  23 )
  24 from ..utils import (
  25     check_executable,
  26     encodeArgument,
  27     encodeFilename,
  28     error_to_compat_str,
  29     Popen,
  30     PostProcessingError,
  31     prepend_extension,
  32     shell_quote,
  33 )
  34
  35
  36 class EmbedThumbnailPPError(PostProcessingError):
  37     pass
  38
  39
  40 class EmbedThumbnailPP(FFmpegPostProcessor):
  41
  42     def __init__(self, downloader=None, already_have_thumbnail=False):
  43         FFmpegPostProcessor.__init__(self, downloader)
  44         self._already_have_thumbnail = already_have_thumbnail
  45
  46     def _get_thumbnail_resolution(self, filename, thumbnail_dict):
  47         def guess():
  48             width, height = thumbnail_dict.get('width'), thumbnail_dict.get('height')
  49             if width and height:
  50                 return width, height
  51
  52         try:
  53             size_regex = r',\s*(?P<w>\d+)x(?P<h>\d+)\s*[,\[]'
  54             size_result = self.run_ffmpeg(filename, None, ['-hide_banner'], expected_retcodes=(1,))
  55             mobj = re.search(size_regex, size_result)
  56             if mobj is None:
  57                 return guess()
  58         except PostProcessingError as err:
  59             self.report_warning('unable to find the thumbnail resolution; %s' % error_to_compat_str(err))
  60             return guess()
  61         return int(mobj.group('w')), int(mobj.group('h'))
  62
  63     def _report_run(self, exe, filename):
  64         self.to_screen('%s: Adding thumbnail to "%s"' % (exe, filename))
  65
  66     @PostProcessor._restrict_to(images=False)
  67     def run(self, info):
  68         filename = info['filepath']
  69         temp_filename = prepend_extension(filename, 'temp')
  70
  71         if not info.get('thumbnails'):
  72             self.to_screen('There aren\'t any thumbnails to embed')
  73             return [], info
  74
  75         idx = next((-i for i, t in enumerate(info['thumbnails'][::-1], 1) if t.get('filepath')), None)
  76         if idx is None:
  77             self.to_screen('There are no thumbnails on disk')
  78             return [], info
  79         thumbnail_filename = info['thumbnails'][idx]['filepath']
  80         if not os.path.exists(encodeFilename(thumbnail_filename)):
  81             self.report_warning('Skipping embedding the thumbnail because the file is missing.')
  82             return [], info
  83
  84         # Correct extension for WebP file with wrong extension (see #25687, #25717)
  85         convertor = FFmpegThumbnailsConvertorPP(self._downloader)
  86         convertor.fixup_webp(info, idx)
  87
  88         original_thumbnail = thumbnail_filename = info['thumbnails'][idx]['filepath']
  89
  90         # Convert unsupported thumbnail formats to PNG (see #25687, #25717)
  91         # Original behavior was to convert to JPG, but since JPG is a lossy
  92         # format, there will be some additional data loss.
  93         # PNG, on the other hand, is lossless.
  94         thumbnail_ext = os.path.splitext(thumbnail_filename)[1][1:]
  95         if thumbnail_ext not in ('jpg', 'jpeg', 'png'):
  96             thumbnail_filename = convertor.convert_thumbnail(thumbnail_filename, 'png')
  97             thumbnail_ext = 'png'
  98
  99         mtime = os.stat(encodeFilename(filename)).st_mtime
 100
 101         success = True
 102         if info['ext'] == 'mp3':
 103             options = [
 104                 '-c', 'copy', '-map', '0:0', '-map', '1:0', '-id3v2_version', '3',
 105                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (front)"']
 106
 107             self._report_run('ffmpeg', filename)
 108             self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
 109
 110         elif info['ext'] in ['mkv', 'mka']:
 111             options = ['-c', 'copy', '-map', '0', '-dn']
 112
 113             mimetype = 'image/%s' % ('png' if thumbnail_ext == 'png' else 'jpeg')
 114             old_stream, new_stream = self.get_stream_number(
 115                 filename, ('tags', 'mimetype'), mimetype)
 116             if old_stream is not None:
 117                 options.extend(['-map', '-0:%d' % old_stream])
 118                 new_stream -= 1
 119             options.extend([
 120                 '-attach', thumbnail_filename,
 121                 '-metadata:s:%d' % new_stream, 'mimetype=%s' % mimetype,
 122                 '-metadata:s:%d' % new_stream, 'filename=cover.%s' % thumbnail_ext])
 123
 124             self._report_run('ffmpeg', filename)
 125             self.run_ffmpeg(filename, temp_filename, options)
 126
 127         elif info['ext'] in ['m4a', 'mp4', 'mov']:
 128             prefer_atomicparsley = 'embed-thumbnail-atomicparsley' in self.get_param('compat_opts', [])
 129             # Method 1: Use mutagen
 130             if not has_mutagen or prefer_atomicparsley:
 131                 success = False
 132             else:
 133                 try:
 134                     self._report_run('mutagen', filename)
 135                     meta = MP4(filename)
 136                     # NOTE: the 'covr' atom is a non-standard MPEG-4 atom,
 137                     # Apple iTunes 'M4A' files include the 'moov.udta.meta.ilst' atom.
 138                     f = {'jpeg': MP4Cover.FORMAT_JPEG, 'png': MP4Cover.FORMAT_PNG}[imghdr.what(thumbnail_filename)]
 139                     with open(thumbnail_filename, 'rb') as thumbfile:
 140                         thumb_data = thumbfile.read()
 141                     meta.tags['covr'] = [MP4Cover(data=thumb_data, imageformat=f)]
 142                     meta.save()
 143                     temp_filename = filename
 144                 except Exception as err:
 145                     self.report_warning('unable to embed using mutagen; %s' % error_to_compat_str(err))
 146                     success = False
 147
 148             # Method 2: Use ffmpeg+ffprobe
 149             if not success and not prefer_atomicparsley:
 150                 success = True
 151                 try:
 152                     options = ['-c', 'copy', '-map', '0', '-dn', '-map', '1']
 153
 154                     old_stream, new_stream = self.get_stream_number(
 155                         filename, ('disposition', 'attached_pic'), 1)
 156                     if old_stream is not None:
 157                         options.extend(['-map', '-0:%d' % old_stream])
 158                         new_stream -= 1
 159                     options.extend(['-disposition:%s' % new_stream, 'attached_pic'])
 160
 161                     self._report_run('ffmpeg', filename)
 162                     self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
 163                 except PostProcessingError as err:
 164                     self.report_warning('unable to embed using ffprobe & ffmpeg; %s' % error_to_compat_str(err))
 165                     success = False
 166
 167             # Method 3: Use AtomicParsley
 168             if not success:
 169                 success = True
 170                 atomicparsley = next((
 171                     x for x in ['AtomicParsley', 'atomicparsley']
 172                     if check_executable(x, ['-v'])), None)
 173                 if atomicparsley is None:
 174                     raise EmbedThumbnailPPError('AtomicParsley was not found. Please install')
 175
 176                 cmd = [encodeFilename(atomicparsley, True),
 177                        encodeFilename(filename, True),
 178                        encodeArgument('--artwork'),
 179                        encodeFilename(thumbnail_filename, True),
 180                        encodeArgument('-o'),
 181                        encodeFilename(temp_filename, True)]
 182                 cmd += [encodeArgument(o) for o in self._configuration_args('AtomicParsley')]
 183
 184                 self._report_run('atomicparsley', filename)
 185                 self.write_debug('AtomicParsley command line: %s' % shell_quote(cmd))
 186                 p = Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 187                 stdout, stderr = p.communicate_or_kill()
 188                 if p.returncode != 0:
 189                     msg = stderr.decode('utf-8', 'replace').strip()
 190                     raise EmbedThumbnailPPError(msg)
 191                 # for formats that don't support thumbnails (like 3gp) AtomicParsley
 192                 # won't create to the temporary file
 193                 if b'No changes' in stdout:
 194                     self.report_warning('The file format doesn\'t support embedding a thumbnail')
 195                     success = False
 196
 197         elif info['ext'] in ['ogg', 'opus', 'flac']:
 198             if not has_mutagen:
 199                 raise EmbedThumbnailPPError('module mutagen was not found. Please install using `python -m pip install mutagen`')
 200
 201             self._report_run('mutagen', filename)
 202             f = {'opus': OggOpus, 'flac': FLAC, 'ogg': OggVorbis}[info['ext']](filename)
 203
 204             pic = Picture()
 205             pic.mime = 'image/%s' % imghdr.what(thumbnail_filename)
 206             with open(thumbnail_filename, 'rb') as thumbfile:
 207                 pic.data = thumbfile.read()
 208             pic.type = 3  # front cover
 209             res = self._get_thumbnail_resolution(thumbnail_filename, info['thumbnails'][idx])
 210             if res is not None:
 211                 pic.width, pic.height = res
 212
 213             if info['ext'] == 'flac':
 214                 f.add_picture(pic)
 215             else:
 216                 # https://wiki.xiph.org/VorbisComment#METADATA_BLOCK_PICTURE
 217                 f['METADATA_BLOCK_PICTURE'] = base64.b64encode(pic.write()).decode('ascii')
 218             f.save()
 219             temp_filename = filename
 220
 221         else:
 222             raise EmbedThumbnailPPError('Supported filetypes for thumbnail embedding are: mp3, mkv/mka, ogg/opus/flac, m4a/mp4/mov')
 223
 224         if success and temp_filename != filename:
 225             os.replace(temp_filename, filename)
 226
 227         self.try_utime(filename, mtime, mtime)
 228
 229         files_to_delete = [thumbnail_filename]
 230         if self._already_have_thumbnail:
 231             if original_thumbnail == thumbnail_filename:
 232                 files_to_delete = []
 233         elif original_thumbnail != thumbnail_filename:
 234             files_to_delete.append(original_thumbnail)
 235         return files_to_delete, info