_ Git - youtube-dl/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     encodeFilename,
  13     PostProcessingError,
  14     prepend_extension,
  15     shell_quote
  16 )
  17
  18
  19 class EmbedThumbnailPPError(PostProcessingError):
  20     pass
  21
  22
  23 class EmbedThumbnailPP(FFmpegPostProcessor):
  24     def __init__(self, downloader=None, already_have_thumbnail=False):
  25         super(EmbedThumbnailPP, self).__init__(downloader)
  26         self._already_have_thumbnail = already_have_thumbnail
  27
  28     def run(self, info):
  29         filename = info['filepath']
  30         temp_filename = prepend_extension(filename, 'temp')
  31
  32         if not info.get('thumbnails'):
  33             raise EmbedThumbnailPPError('Thumbnail was not found. Nothing to do.')
  34
  35         thumbnail_filename = info['thumbnails'][-1]['filename']
  36
  37         if info['ext'] == 'mp3':
  38             options = [
  39                 '-c', 'copy', '-map', '0', '-map', '1',
  40                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']
  41
  42             self._downloader.to_screen('[ffmpeg] Adding thumbnail to "%s"' % filename)
  43
  44             self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
  45
  46             if not self._already_have_thumbnail:
  47                 os.remove(encodeFilename(thumbnail_filename))
  48             os.remove(encodeFilename(filename))
  49             os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  50
  51         elif info['ext'] == 'm4a':
  52             if not check_executable('AtomicParsley', ['-v']):
  53                 raise EmbedThumbnailPPError('AtomicParsley was not found. Please install.')
  54
  55             cmd = ['AtomicParsley', filename, '--artwork', thumbnail_filename, '-o', temp_filename]
  56
  57             self._downloader.to_screen('[atomicparsley] Adding thumbnail to "%s"' % filename)
  58
  59             if self._downloader.params.get('verbose', False):
  60                 self._downloader.to_screen('[debug] AtomicParsley command line: %s' % shell_quote(cmd))
  61
  62             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  63             stdout, stderr = p.communicate()
  64
  65             if p.returncode != 0:
  66                 msg = stderr.decode('utf-8', 'replace').strip()
  67                 raise EmbedThumbnailPPError(msg)
  68
  69             if not self._already_have_thumbnail:
  70                 os.remove(encodeFilename(thumbnail_filename))
  71             # for formats that don't support thumbnails (like 3gp) AtomicParsley
  72             # won't create to the temporary file
  73             if b'No changes' in stdout:
  74                 self._downloader.report_warning('The file format doesn\'t support embedding a thumbnail')
  75             else:
  76                 os.remove(encodeFilename(filename))
  77                 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
  78         else:
  79             raise EmbedThumbnailPPError('Only mp3 and m4a are supported for thumbnail embedding for now.')
  80
  81         return [], info