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             raise EmbedThumbnailPPError('Thumbnail was not found. Nothing to do.')
  35
  36         thumbnail_filename = info['thumbnails'][-1]['filename']
  37
  38         if info['ext'] == 'mp3':
  39             options = [
  40                 '-c', 'copy', '-map', '0', '-map', '1',
  41                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']
  42
  43             self._downloader.to_screen('[ffmpeg] Adding thumbnail to "%s"' % filename)
  44
  45             self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
  46
  47             if not self._already_have_thumbnail:
  48                 os.remove(encodeFilename(thumbnail_filename))
  49             os.remove(encodeFilename(filename))
  50             os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  51
  52         elif info['ext'] in ['m4a', 'mp4']:
  53             if not check_executable('AtomicParsley', ['-v']):
  54                 raise EmbedThumbnailPPError('AtomicParsley was not found. Please install.')
  55
  56             cmd = [encodeFilename('AtomicParsley', True),
  57                    encodeFilename(filename, True),
  58                    encodeArgument('--artwork'),
  59                    encodeFilename(thumbnail_filename, True),
  60                    encodeArgument('-o'),
  61                    encodeFilename(temp_filename, True)]
  62
  63             self._downloader.to_screen('[atomicparsley] Adding thumbnail to "%s"' % filename)
  64
  65             if self._downloader.params.get('verbose', False):
  66                 self._downloader.to_screen('[debug] AtomicParsley command line: %s' % shell_quote(cmd))
  67
  68             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  69             stdout, stderr = p.communicate()
  70
  71             if p.returncode != 0:
  72                 msg = stderr.decode('utf-8', 'replace').strip()
  73                 raise EmbedThumbnailPPError(msg)
  74
  75             if not self._already_have_thumbnail:
  76                 os.remove(encodeFilename(thumbnail_filename))
  77             # for formats that don't support thumbnails (like 3gp) AtomicParsley
  78             # won't create to the temporary file
  79             if b'No changes' in stdout:
  80                 self._downloader.report_warning('The file format doesn\'t support embedding a thumbnail')
  81             else:
  82                 os.remove(encodeFilename(filename))
  83                 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  84         else:
  85             raise EmbedThumbnailPPError('Only mp3 and m4a/mp4 are supported for thumbnail embedding for now.')
  86
  87         return [], info