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https://github.com/yt-dlp/yt-dlp.git
synced 2024-09-05 02:19:36 +02:00
[embedthumbnail] Add flac
support and refactor mutagen
code
https://github.com/ytdl-org/youtube-dl/pull/28894, https://github.com/ytdl-org/youtube-dl/pull/24310 Authored by: tripulse
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@ -1,14 +1,17 @@
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# coding: utf-8
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from __future__ import unicode_literals
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import os
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import subprocess
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import struct
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import re
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import base64
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import imghdr
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import os
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import struct
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import subprocess
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import re
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try:
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import mutagen
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from mutagen.oggvorbis import OggVorbis
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from mutagen.oggopus import OggOpus
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from mutagen.flac import Picture, FLAC
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has_mutagen = True
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except ImportError:
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has_mutagen = False
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@ -39,6 +42,23 @@ def __init__(self, downloader=None, already_have_thumbnail=False):
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FFmpegPostProcessor.__init__(self, downloader)
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self._already_have_thumbnail = already_have_thumbnail
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def _get_thumbnail_resolution(self, filename, thumbnail_dict):
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def guess():
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width, height = thumbnail_dict.get('width'), thumbnail_dict.get('height')
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if width and height:
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return width, height
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try:
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size_regex = r',\s*(?P<w>\d+)x(?P<h>\d+)\s*[,\[]'
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size_result = self.run_ffmpeg(filename, filename, ['-hide_banner'])
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mobj = re.search(size_regex, size_result)
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if mobj is None:
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return guess()
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except PostProcessingError as err:
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self.report_warning('unable to find the thumbnail resolution; %s' % error_to_compat_str(err))
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return guess()
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return int(mobj.group('w')), int(mobj.group('h'))
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def run(self, info):
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filename = info['filepath']
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temp_filename = prepend_extension(filename, 'temp')
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@ -135,34 +155,32 @@ def run(self, info):
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self.report_warning('The file format doesn\'t support embedding a thumbnail')
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success = False
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elif info['ext'] in ['ogg', 'opus']:
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elif info['ext'] in ['ogg', 'opus', 'flac']:
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if not has_mutagen:
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raise EmbedThumbnailPPError('module mutagen was not found. Please install using `python -m pip install mutagen`')
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self.to_screen('Adding thumbnail to "%s"' % filename)
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size_regex = r',\s*(?P<w>\d+)x(?P<h>\d+)\s*[,\[]'
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size_result = self.run_ffmpeg(thumbnail_filename, thumbnail_filename, ['-hide_banner'])
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mobj = re.search(size_regex, size_result)
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width, height = int(mobj.group('w')), int(mobj.group('h'))
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mimetype = ('image/%s' % ('png' if thumbnail_ext == 'png' else 'jpeg')).encode('ascii')
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# https://xiph.org/flac/format.html#metadata_block_picture
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data = bytearray()
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data += struct.pack('>II', 3, len(mimetype))
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data += mimetype
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data += struct.pack('>IIIIII', 0, width, height, 8, 0, os.stat(thumbnail_filename).st_size) # 32 if png else 24
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fin = open(thumbnail_filename, "rb")
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data += fin.read()
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fin.close()
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temp_filename = filename
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f = mutagen.File(temp_filename)
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f.tags['METADATA_BLOCK_PICTURE'] = base64.b64encode(data).decode('ascii')
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f = {'opus': OggOpus, 'flac': FLAC, 'ogg': OggVorbis}[info['ext']](filename)
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pic = Picture()
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pic.mime = 'image/%s' % imghdr.what(thumbnail_filename)
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with open(thumbnail_filename, 'rb') as thumbfile:
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pic.data = thumbfile.read()
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pic.type = 3 # front cover
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res = self._get_thumbnail_resolution(thumbnail_filename, info['thumbnails'][-1])
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if res is not None:
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pic.width, pic.height = res
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if info['ext'] == 'flac':
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f.add_picture(pic)
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else:
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# https://wiki.xiph.org/VorbisComment#METADATA_BLOCK_PICTURE
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f['METADATA_BLOCK_PICTURE'] = base64.b64encode(pic.write()).decode('ascii')
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f.save()
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else:
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raise EmbedThumbnailPPError('Supported filetypes for thumbnail embedding are: mp3, mkv/mka, ogg/opus, m4a/mp4/mov')
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raise EmbedThumbnailPPError('Supported filetypes for thumbnail embedding are: mp3, mkv/mka, ogg/opus/flac, m4a/mp4/mov')
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if success and temp_filename != filename:
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os.remove(encodeFilename(filename))
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