youtube-dl/youtube_dl/postprocessor/embedthumbnail.py

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2016-10-02 11:39:18 +00:00
# coding: utf-8
from __future__ import unicode_literals
import os
import subprocess
from .ffmpeg import FFmpegPostProcessor
from ..utils import (
check_executable,
encodeArgument,
encodeFilename,
PostProcessingError,
prepend_extension,
shell_quote
)
class EmbedThumbnailPPError(PostProcessingError):
pass
class EmbedThumbnailPP(FFmpegPostProcessor):
def __init__(self, downloader=None, already_have_thumbnail=False):
super(EmbedThumbnailPP, self).__init__(downloader)
self._already_have_thumbnail = already_have_thumbnail
def run(self, info):
filename = info['filepath']
temp_filename = prepend_extension(filename, 'temp')
if not info.get('thumbnails'):
self._downloader.to_screen('[embedthumbnail] There aren\'t any thumbnails to embed')
return [], info
thumbnail_filename = info['thumbnails'][-1]['filename']
if not os.path.exists(encodeFilename(thumbnail_filename)):
self._downloader.report_warning(
'Skipping embedding the thumbnail because the file is missing.')
return [], info
# Check for mislabeled webp file
with open(encodeFilename(thumbnail_filename), "rb") as f:
b = f.read(16)
if b'\x57\x45\x42\x50' in b: # Binary for WEBP
[thumbnail_filename_path, thumbnail_filename_extension] = os.path.splitext(thumbnail_filename)
if not thumbnail_filename_extension == ".webp":
webp_thumbnail_filename = thumbnail_filename_path + ".webp"
os.rename(encodeFilename(thumbnail_filename), encodeFilename(webp_thumbnail_filename))
thumbnail_filename = webp_thumbnail_filename
# If not a jpg or png thumbnail, convert it to jpg using ffmpeg
if not os.path.splitext(thumbnail_filename)[1].lower() in ['.jpg', '.png']:
jpg_thumbnail_filename = os.path.splitext(thumbnail_filename)[0] + ".jpg"
jpg_thumbnail_filename = os.path.join(os.path.dirname(jpg_thumbnail_filename), os.path.basename(jpg_thumbnail_filename).replace('%', '_')) # ffmpeg interprets % as image sequence
self._downloader.to_screen('[ffmpeg] Converting thumbnail "%s" to JPEG' % thumbnail_filename)
self.run_ffmpeg(thumbnail_filename, jpg_thumbnail_filename, ['-bsf:v', 'mjpeg2jpeg'])
os.remove(encodeFilename(thumbnail_filename))
thumbnail_filename = jpg_thumbnail_filename
if info['ext'] == 'mp3':
options = [
'-c', 'copy', '-map', '0', '-map', '1',
'-metadata:s:v', 'title="Album cover"', '-metadata:s:v', 'comment="Cover (Front)"']
self._downloader.to_screen('[ffmpeg] Adding thumbnail to "%s"' % filename)
self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
if not self._already_have_thumbnail:
os.remove(encodeFilename(thumbnail_filename))
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
elif info['ext'] in ['m4a', 'mp4']:
if not check_executable('AtomicParsley', ['-v']):
raise EmbedThumbnailPPError('AtomicParsley was not found. Please install.')
cmd = [encodeFilename('AtomicParsley', True),
encodeFilename(filename, True),
encodeArgument('--artwork'),
encodeFilename(thumbnail_filename, True),
encodeArgument('-o'),
encodeFilename(temp_filename, True)]
self._downloader.to_screen('[atomicparsley] Adding thumbnail to "%s"' % filename)
if self._downloader.params.get('verbose', False):
self._downloader.to_screen('[debug] AtomicParsley command line: %s' % shell_quote(cmd))
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
if p.returncode != 0:
msg = stderr.decode('utf-8', 'replace').strip()
raise EmbedThumbnailPPError(msg)
if not self._already_have_thumbnail:
os.remove(encodeFilename(thumbnail_filename))
# for formats that don't support thumbnails (like 3gp) AtomicParsley
# won't create to the temporary file
if b'No changes' in stdout:
self._downloader.report_warning('The file format doesn\'t support embedding a thumbnail')
else:
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
else:
raise EmbedThumbnailPPError('Only mp3 and m4a/mp4 are supported for thumbnail embedding for now.')
return [], info