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[youtube-dl] / 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 not os.path.exists(encodeFilename(thumbnail_filename)):
39             self._downloader.report_warning(
40                 'Skipping embedding the thumbnail because the file is missing.')
41             return [], info
42
43         if info['ext'] == 'mp3':
44             options = [
45                 '-c', 'copy', '-map', '0', '-map', '1',
46                 '-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']
47
48             self._downloader.to_screen('[ffmpeg] Adding thumbnail to "%s"' % filename)
49
50             self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
51
52             if not self._already_have_thumbnail:
53                 os.remove(encodeFilename(thumbnail_filename))
54             os.remove(encodeFilename(filename))
55             os.rename(encodeFilename(temp_filename), encodeFilename(filename))
56
57         elif info['ext'] in ['m4a', 'mp4']:
58             if not check_executable('AtomicParsley', ['-v']):
59                 raise EmbedThumbnailPPError('AtomicParsley was not found. Please install.')
60
61             cmd = [encodeFilename('AtomicParsley', True),
62                    encodeFilename(filename, True),
63                    encodeArgument('--artwork'),
64                    encodeFilename(thumbnail_filename, True),
65                    encodeArgument('-o'),
66                    encodeFilename(temp_filename, True)]
67
68             self._downloader.to_screen('[atomicparsley] Adding thumbnail to "%s"' % filename)
69
70             if self._downloader.params.get('verbose', False):
71                 self._downloader.to_screen('[debug] AtomicParsley command line: %s' % shell_quote(cmd))
72
73             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
74             stdout, stderr = p.communicate()
75
76             if p.returncode != 0:
77                 msg = stderr.decode('utf-8', 'replace').strip()
78                 raise EmbedThumbnailPPError(msg)
79
80             if not self._already_have_thumbnail:
81                 os.remove(encodeFilename(thumbnail_filename))
82             # for formats that don't support thumbnails (like 3gp) AtomicParsley
83             # won't create to the temporary file
84             if b'No changes' in stdout:
85                 self._downloader.report_warning('The file format doesn\'t support embedding a thumbnail')
86             else:
87                 os.remove(encodeFilename(filename))
88                 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
89         else:
90             raise EmbedThumbnailPPError('Only mp3 and m4a/mp4 are supported for thumbnail embedding for now.')
91
92         return [], info