Added '--xattrs' option which writes metadata to the file's extended attributes using a youtube-dl postprocessor.
Works on Linux, OSX, and Windows.
This commit is contained in:
epitron
parent
1b969041d7
commit
e63fc1bed4
4 changed files with 139 additions and 2 deletions
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@ -189,7 +189,9 @@ which means you can modify it, redistribute it or use it however you like.
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processed files are overwritten by default
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--embed-subs embed subtitles in the video (only for mp4
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videos)
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--add-metadata add metadata to the files
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--add-metadata write metadata to the video file
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--xattrs write metadata to the video file's xattrs (using
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dublin core and xdg standards)
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# CONFIGURATION
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@ -62,6 +62,7 @@ class FFmpegPostProcessorError(PostProcessingError):
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class AudioConversionError(PostProcessingError):
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pass
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class FFmpegPostProcessor(PostProcessor):
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def __init__(self,downloader=None):
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PostProcessor.__init__(self, downloader)
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@ -107,6 +108,7 @@ class FFmpegPostProcessor(PostProcessor):
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return u'./' + fn
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return fn
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class FFmpegExtractAudioPP(FFmpegPostProcessor):
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def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
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FFmpegPostProcessor.__init__(self, downloader)
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@ -232,6 +234,7 @@ class FFmpegExtractAudioPP(FFmpegPostProcessor):
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information['filepath'] = new_path
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return self._nopostoverwrites,information
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class FFmpegVideoConvertor(FFmpegPostProcessor):
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def __init__(self, downloader=None,preferedformat=None):
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super(FFmpegVideoConvertor, self).__init__(downloader)
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@ -509,3 +512,120 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
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os.remove(encodeFilename(filename))
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os.rename(encodeFilename(temp_filename), encodeFilename(filename))
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return True, info
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class XAttrMetadataPP(PostProcessor):
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#
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# More info about extended attributes for media:
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# http://freedesktop.org/wiki/CommonExtendedAttributes/
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# http://www.freedesktop.org/wiki/PhreedomDraft/
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# http://dublincore.org/documents/usageguide/elements.shtml
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#
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# TODO:
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# * capture youtube keywords and put them in 'user.dublincore.subject' (comma-separated)
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# * figure out which xattrs can be used for 'duration', 'thumbnail', 'resolution'
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#
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def run(self, info):
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""" Set extended attributes on downloaded file (if xattr support is found). """
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from .utils import hyphenate_date
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# This mess below finds the best xattr tool for the job and creates a
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# "write_xattr" function.
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try:
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# try the pyxattr module...
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import xattr
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def write_xattr(path, key, value):
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return xattr.setxattr(path, key, value)
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except ImportError:
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if os.name == 'posix':
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def which(bin):
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for dir in os.environ["PATH"].split(":"):
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path = os.path.join(dir, bin)
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if os.path.exists(path):
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return path
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user_has_setfattr = which("setfattr")
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user_has_xattr = which("xattr")
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if user_has_setfattr or user_has_xattr:
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def write_xattr(path, key, value):
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import errno
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potential_errors = {
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# setfattr: /tmp/blah: Operation not supported
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"Operation not supported": errno.EOPNOTSUPP,
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# setfattr: ~/blah: No such file or directory
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# xattr: No such file: ~/blah
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"No such file": errno.ENOENT,
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}
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if user_has_setfattr:
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cmd = ['setfattr', '-n', key, '-v', value, path]
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elif user_has_xattr:
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cmd = ['xattr', '-w', key, value, path]
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try:
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output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
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except subprocess.CalledProcessError as e:
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errorstr = e.output.strip().decode()
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for potential_errorstr, potential_errno in potential_errors.items():
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if errorstr.find(potential_errorstr) > -1:
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e = OSError(potential_errno, potential_errorstr)
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e.__cause__ = None
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raise e
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raise # Reraise unhandled error
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else:
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# On Unix, and can't find pyxattr, setfattr, or xattr.
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if sys.platform.startswith('linux'):
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self._downloader.report_error("Couldn't find a tool to set the xattrs. Install either the python 'pyxattr' or 'xattr' modules, or the GNU 'attr' package (which contains the 'setfattr' tool).")
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elif sys.platform == 'darwin':
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self._downloader.report_error("Couldn't find a tool to set the xattrs. Install either the python 'xattr' module, or the 'xattr' binary.")
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else:
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# Write xattrs to NTFS Alternate Data Streams: http://en.wikipedia.org/wiki/NTFS#Alternate_data_streams_.28ADS.29
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def write_xattr(path, key, value):
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assert(key.find(":") < 0)
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assert(path.find(":") < 0)
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assert(os.path.exists(path))
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f = open(path+":"+key, "w")
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f.write(value)
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f.close()
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# Write the metadata to the file's xattrs
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self._downloader.to_screen('[metadata] Writing metadata to file\'s xattrs...')
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filename = info['filepath']
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try:
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xattr_mapping = {
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'user.xdg.referrer.url': 'webpage_url',
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# 'user.xdg.comment': 'description',
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'user.dublincore.title': 'title',
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'user.dublincore.date': 'upload_date',
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'user.dublincore.description': 'description',
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'user.dublincore.contributor': 'uploader',
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'user.dublincore.format': 'format',
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}
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for xattrname, infoname in xattr_mapping.items():
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value = info.get(infoname)
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if value:
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if infoname == "upload_date":
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value = hyphenate_date(value)
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write_xattr(filename, xattrname, value)
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return True, info
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except OSError:
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self._downloader.report_error("This filesystem doesn't support extended attributes. (You may have to enable them in your /etc/fstab)")
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return False, info
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@ -38,6 +38,7 @@ __authors__ = (
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'Takuya Tsuchida',
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'Sergey M.',
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'Michael Orlitzky',
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'Chris Gahan',
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)
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__license__ = 'Public Domain'
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@ -78,6 +79,7 @@ from .PostProcessor import (
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FFmpegVideoConvertor,
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FFmpegExtractAudioPP,
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FFmpegEmbedSubtitlePP,
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XAttrMetadataPP,
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)
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@ -412,7 +414,9 @@ def parseOpts(overrideArguments=None):
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postproc.add_option('--embed-subs', action='store_true', dest='embedsubtitles', default=False,
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help='embed subtitles in the video (only for mp4 videos)')
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postproc.add_option('--add-metadata', action='store_true', dest='addmetadata', default=False,
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help='add metadata to the files')
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help='write metadata to the video file')
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postproc.add_option('--xattrs', action='store_true', dest='xattrs', default=False,
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help='write metadata to the video file\'s xattrs (using dublin core and xdg standards)')
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parser.add_option_group(general)
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@ -709,6 +713,8 @@ def _real_main(argv=None):
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ydl.add_post_processor(FFmpegVideoConvertor(preferedformat=opts.recodevideo))
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if opts.embedsubtitles:
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ydl.add_post_processor(FFmpegEmbedSubtitlePP(subtitlesformat=opts.subtitlesformat))
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if opts.xattrs:
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ydl.add_post_processor(XAttrMetadataPP())
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# Update version
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if opts.update_self:
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@ -809,6 +809,15 @@ def date_from_str(date_str):
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return today + delta
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return datetime.datetime.strptime(date_str, "%Y%m%d").date()
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def hyphenate_date(date_str):
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"""
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Convert a date in 'YYYYMMDD' format to 'YYYY-MM-DD' format"""
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match = re.match(r'^(\d\d\d\d)(\d\d)(\d\d)$', date_str)
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if match is not None:
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return '-'.join(match.groups())
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else:
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return date_str
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class DateRange(object):
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"""Represents a time interval between two dates"""
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def __init__(self, start=None, end=None):
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