Raphaël G. Git Repositories - youtubedl/blob - 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     replace_extension,
  17     shell_quote
  18 )
  19
  20
  21 class EmbedThumbnailPPError(PostProcessingError):
  22     pass
  23
  24
  25 class EmbedThumbnailPP(FFmpegPostProcessor):
  26     def __init__(self, downloader=None, already_have_thumbnail=False):
  27         super(EmbedThumbnailPP, self).__init__(downloader)
  28         self._already_have_thumbnail = already_have_thumbnail
  29
  30     def run(self, info):
  31         filename = info['filepath']
  32         temp_filename = prepend_extension(filename, 'temp')
  33
  34         if not info.get('thumbnails'):
  35             self._downloader.to_screen('[embedthumbnail] There aren\'t any thumbnails to embed')
  36             return [], info
  37
  38         thumbnail_filename = info['thumbnails'][-1]['filename']
  39
  40         if not os.path.exists(encodeFilename(thumbnail_filename)):
  41             self._downloader.report_warning(
  42                 'Skipping embedding the thumbnail because the file is missing.')
  43             return [], info
  44
  45         def is_webp(path):
  46             with open(encodeFilename(path), 'rb') as f:
  47                 b = f.read(12)
  48             return b[0:4] == b'RIFF' and b[8:] == b'WEBP'
  49
  50         # Correct extension for WebP file with wrong extension (see #25687, #25717)
  51         _, thumbnail_ext = os.path.splitext(thumbnail_filename)
  52         if thumbnail_ext:
  53             thumbnail_ext = thumbnail_ext[1:].lower()
  54             if thumbnail_ext != 'webp' and is_webp(thumbnail_filename):
  55                 self._downloader.to_screen(
  56                     '[ffmpeg] Correcting extension to webp and escaping path for thumbnail "%s"' % thumbnail_filename)
  57                 thumbnail_webp_filename = replace_extension(thumbnail_filename, 'webp')
  58                 os.rename(encodeFilename(thumbnail_filename), encodeFilename(thumbnail_webp_filename))
  59                 thumbnail_filename = thumbnail_webp_filename
  60                 thumbnail_ext = 'webp'
  61
  62         # Convert unsupported thumbnail formats to JPEG (see #25687, #25717)
  63         if thumbnail_ext not in ['jpg', 'png']:
  64             # NB: % is supposed to be escaped with %% but this does not work
  65             # for input files so working around with standard substitution
  66             escaped_thumbnail_filename = thumbnail_filename.replace('%', '#')
  67             os.rename(encodeFilename(thumbnail_filename), encodeFilename(escaped_thumbnail_filename))
  68             escaped_thumbnail_jpg_filename = replace_extension(escaped_thumbnail_filename, 'jpg')
  69             self._downloader.to_screen('[ffmpeg] Converting thumbnail "%s" to JPEG' % escaped_thumbnail_filename)
  70             self.run_ffmpeg(escaped_thumbnail_filename, escaped_thumbnail_jpg_filename, ['-bsf:v', 'mjpeg2jpeg'])
  71             os.remove(encodeFilename(escaped_thumbnail_filename))
  72             thumbnail_jpg_filename = replace_extension(thumbnail_filename, 'jpg')
  73             # Rename back to unescaped for further processing
  74             os.rename(encodeFilename(escaped_thumbnail_jpg_filename), encodeFilename(thumbnail_jpg_filename))
  75             thumbnail_filename = thumbnail_jpg_filename
  76
  77         if info['ext'] == 'mp3':
  78             options = [
  79                 '-c', 'copy', '-map', '0', '-map', '1',
  80                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']
  81
  82             self._downloader.to_screen('[ffmpeg] Adding thumbnail to "%s"' % filename)
  83
  84             self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
  85
  86             if not self._already_have_thumbnail:
  87                 os.remove(encodeFilename(thumbnail_filename))
  88             os.remove(encodeFilename(filename))
  89             os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  90
  91         elif info['ext'] in ['m4a', 'mp4']:
  92             if not check_executable('AtomicParsley', ['-v']):
  93                 raise EmbedThumbnailPPError('AtomicParsley was not found. Please install.')
  94
  95             cmd = [encodeFilename('AtomicParsley', True),
  96                    encodeFilename(filename, True),
  97                    encodeArgument('--artwork'),
  98                    encodeFilename(thumbnail_filename, True),
  99                    encodeArgument('-o'),
 100                    encodeFilename(temp_filename, True)]
 101
 102             self._downloader.to_screen('[atomicparsley] Adding thumbnail to "%s"' % filename)
 103
 104             if self._downloader.params.get('verbose', False):
 105                 self._downloader.to_screen('[debug] AtomicParsley command line: %s' % shell_quote(cmd))
 106
 107             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 108             stdout, stderr = p.communicate()
 109
 110             if p.returncode != 0:
 111                 msg = stderr.decode('utf-8', 'replace').strip()
 112                 raise EmbedThumbnailPPError(msg)
 113
 114             if not self._already_have_thumbnail:
 115                 os.remove(encodeFilename(thumbnail_filename))
 116             # for formats that don't support thumbnails (like 3gp) AtomicParsley
 117             # won't create to the temporary file
 118             if b'No changes' in stdout:
 119                 self._downloader.report_warning('The file format doesn\'t support embedding a thumbnail')
 120             else:
 121                 os.remove(encodeFilename(filename))
 122                 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 123         else:
 124             raise EmbedThumbnailPPError('Only mp3 and m4a/mp4 are supported for thumbnail embedding for now.')
 125
 126         return [], info