/usr/lib/python3/dist-packages/raphodo/metadatavideo.py is in rapid-photo-downloader 0.9.9-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2011-2017 Damon Lynch <damonlynch@gmail.com>
# This file is part of Rapid Photo Downloader.
#
# Rapid Photo Downloader is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Rapid Photo Downloader is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Rapid Photo Downloader. If not,
# see <http://www.gnu.org/licenses/>.
__author__ = 'Damon Lynch'
__copyright__ = "Copyright 2011-2017, Damon Lynch"
import datetime
import logging
from typing import Optional, Union, Any
import arrow.arrow
from arrow.arrow import Arrow
import raphodo.exiftool as exiftool
from raphodo.utilities import datetime_roughly_equal
try:
import pymediainfo
have_pymediainfo = True
pymedia_library_file = 'libmediainfo.so.0'
except ImportError:
have_pymediainfo = False
libmediainfo_missing = None
if have_pymediainfo:
libmediainfo_missing = False
try:
if not pymediainfo.MediaInfo.can_parse(library_file=pymedia_library_file):
# attempt to work around MediaInfoLib issue #695:
# 'SONAME is different when compiling with CMake and autotools'
pymedia_library_file = 'libmediainfo.so.17'
if not pymediainfo.MediaInfo.can_parse(library_file=pymedia_library_file):
have_pymediainfo = False
libmediainfo_missing = True
except TypeError:
# older versions of pymediainfo do not have the library_file option
pymedia_library_file = None
if not pymediainfo.MediaInfo.can_parse():
have_pymediainfo = False
libmediainfo_missing = True
except AttributeError:
try:
# Attempt to parse null... it will fail if libmediainfo is not present, which is
# what we want to check
pymediainfo.MediaInfo.parse('/dev/null')
except OSError:
have_pymediainfo = False
libmediainfo_missing = True
pymedia_library_file = None
def pymedia_version_info() -> Optional[str]:
if have_pymediainfo:
if pymedia_library_file == 'libmediainfo.so.0':
return pymediainfo.__version__
else:
return '{} (using {})'.format(pymediainfo.__version__, pymedia_library_file)
else:
return None
EXIFTOOL_VERSION = exiftool.version_info()
class MetaData:
def __init__(self, full_file_name: str, et_process: exiftool.ExifTool):
"""
Get video metadata using Exiftool
:param filename: the file from which to get metadata
:param et_process: instance of ExifTool class, which allows
calling EXifTool without it exiting with each call
"""
self.filename = full_file_name
self.metadata = dict()
self.metadata_string_format = dict()
self.et_process = et_process
if have_pymediainfo:
if pymedia_library_file is not None:
self.media_info = pymediainfo.MediaInfo.parse(
filename=full_file_name, library_file=pymedia_library_file
) # type: pymediainfo.MediaInfo
else:
self.media_info = pymediainfo.MediaInfo.parse(
filename=full_file_name
) # type: pymediainfo.MediaInfo
else:
self.media_info = None
def _get(self, key, missing):
if key in ("VideoStreamType", "FileNumber"):
# special case: want ExifTool's string formatting
# i.e. no -n tag
if not self.metadata_string_format:
try:
self.metadata_string_format = \
self.et_process.execute_json_no_formatting(self.filename)
except ValueError:
return missing
try:
return self.metadata_string_format[0][key]
except:
return missing
elif not self.metadata:
try:
self.metadata = self.et_process.get_metadata(self.filename)
except ValueError:
return missing
return self.metadata.get(key, missing)
def _exiftool_date_time(self, missing: Optional[str]='',
ignore_file_modify_date: bool = False) -> Union[datetime.datetime, Any]:
"""
Tries to get value from key "DateTimeOriginal"
If that fails, tries "CreateDate", and then finally
FileModifyDate
:param ignore_file_modify_date: if True, don't return the file
modification date
:return python datetime format the date and time the video was
recorded, else missing
"""
d = self._get('DateTimeOriginal', None)
if d is None:
d = self._get('CreateDate', None)
if d is None and not ignore_file_modify_date:
d = self._get('FileModifyDate', None)
if d is not None:
d = d.strip()
try:
# returned value may or may not have a time offset
if len(d) > 19:
# remove the : from the timezone component, if it's present
if d[-3] == ':' and (d[-6] in ('+', '-')):
d = d[:-3] + d[-2:]
dt = datetime.datetime.strptime(d, "%Y:%m:%d %H:%M:%S%z")
else:
dt = datetime.datetime.strptime(d, "%Y:%m:%d %H:%M:%S")
except ValueError:
logging.warning(
"Error parsing date time metadata %s for video %s", d, self.filename
)
return missing
except Exception:
logging.error(
"Unknown error parsing date time metadata %s for video %s", d, self.filename
)
return missing
return dt
else:
return missing
def date_time(self, missing: Optional[str]='',
ignore_file_modify_date: bool=False) -> datetime.datetime:
"""
Use pymediainfo (if present) to extract file encoding date.
Also use ExifTool if appropriate.
:param ignore_file_modify_date: if True, don't return the file
modification date
:return python datetime format the date and time the video was
recorded, else missing
"""
if have_pymediainfo:
try:
d = self.media_info.to_data()['tracks'][0]['encoded_date'] # type: str
except KeyError:
logging.debug(
'Failed to extract date time from %s using pymediainfo: trying ExifTool',
self.filename
)
return self._exiftool_date_time(
missing=missing, ignore_file_modify_date=ignore_file_modify_date
)
else:
# format of date string is something like:
# UTC 2016-05-09 03:28:03
try:
if d.startswith('UTC'):
u = d[4:]
a = arrow.get(u, "YYYY-MM-DD HH:mm:ss") # type: Arrow
dt_mi = a.to('local')
dt = dt_mi.datetime # type: datetime.datetime
# Compare the value returned by mediainfo against that
# returned by ExifTool, if and only if there is a time zone
# setting in the video file that ExifTool can extract
tz = self._get('TimeZone', None)
if tz is None:
logging.debug(
"Using pymediainfo datetime (%s), because ExifTool did "
"not detect a time zone in %s", dt_mi, self.filename
)
if tz is not None:
dt_et = self._exiftool_date_time(
missing=None, ignore_file_modify_date=True
)
if dt_et is not None:
hour = tz // 60 * -1
minute = tz % 60 * -1
adjusted_dt_mi = dt_mi.replace(hours=hour, minutes=minute).naive
if datetime_roughly_equal(adjusted_dt_mi, dt_et):
logging.debug(
"Favoring ExifTool datetime metadata (%s) "
"over mediainfo (%s) for %s, because it includes "
"a timezone", dt_et, adjusted_dt_mi, self.filename
)
dt = dt_et
else:
logging.debug(
"Although ExifTool located a time zone"
"in %s's metadata, using the mediainfo result, "
"because the two results are different. Mediainfo: %s / "
"%s (before / after). ExifTool: %s. Time zone: %s",
self.filename, dt, adjusted_dt_mi, dt_et, tz
)
else:
dt = datetime.datetime.strptime(d, "%Y-%m-%d %H:%M:%S")
except ValueError:
logging.warning(
"Error parsing date time metadata %s for video %s. Will try ExifTool.",
d, self.filename
)
return self._exiftool_date_time(missing)
except arrow.parser.ParserError:
logging.warning(
"Error parsing date time metadata using Arrow %s for video %s. Will try "
"ExifTool.", d, self.filename
)
return self._exiftool_date_time(missing)
except Exception as e:
logging.error(
"Unknown error parsing date time metadata %s for video %s. %s. "
"Will try ExifTool.", d, self.filename, e
)
return self._exiftool_date_time(missing)
except:
logging.error(
"Unknown error parsing date time metadata %s for video %s. "
"Will try ExifTool.", d, self.filename
)
return self._exiftool_date_time(missing)
else:
return dt
else:
return self._exiftool_date_time(missing)
def timestamp(self, missing='') -> Union[float, Any]:
"""
:return: a float value representing the time stamp, if it exists
"""
dt = self.date_time(missing=None)
if dt is not None:
try:
ts = dt.timestamp()
ts = float(ts)
except:
ts = missing
else:
ts = missing
return ts
def file_number(self, missing='') -> Union[str, Any]:
v = self._get("FileNumber", None)
if v is not None:
return str(v)
else:
return missing
def width(self, missing='') -> Union[str, Any]:
v = self._get('ImageWidth', None)
if v is not None:
return str(v)
else:
return missing
def height(self, missing='') -> Union[str, Any]:
v = self._get('ImageHeight', None)
if v is not None:
return str(v)
else:
return missing
def length(self, missing='') -> Union[str, Any]:
"""
return the duration (length) of the video, rounded to the nearest second, in string format
"""
v = self._get("Duration", None)
if v is not None:
try:
v = float(v)
v = "%0.f" % v
except:
return missing
return v
else:
return missing
def frames_per_second(self, missing='') -> Union[str, Any]:
v = self._get("FrameRate", None)
if v is None:
v = self._get("VideoFrameRate", None)
if v is None:
return missing
try:
v = '%.0f' % v
except:
return missing
return v
def codec(self, missing='') -> Union[str, Any]:
v = self._get("VideoStreamType", None)
if v is None:
v = self._get("VideoCodec", None)
if v is not None:
return v
return missing
def fourcc(self, missing='') -> Union[str, Any]:
return self._get("CompressorID", missing)
def rotation(self, missing=0) -> Union[int, Any]:
v = self._get("Rotation", None)
if v is not None:
return v
return missing
class DummyMetaData():
"""
Class which gives metadata values for an imaginary video.
Useful for displaying in preference examples etc. when no video is ready to
be downloaded.
"""
def __init__(self, filename, et_process):
pass
def date_time(self, missing=''):
return datetime.datetime.now()
def codec(self, stream=0, missing=''):
return 'H.264 AVC'
def length(self, missing=''):
return '57'
def width(self, stream=0, missing=''):
return '1920'
def height(self, stream=0, missing=''):
return '1080'
def frames_per_second(self, stream=0, missing=''):
return '24'
def fourcc(self, stream=0, missing=''):
return 'AVC1'
if __name__ == '__main__':
import sys
with exiftool.ExifTool() as et_process:
if (len(sys.argv) != 2):
print('Usage: ' + sys.argv[0] + ' path/to/video/containing/metadata')
else:
file = sys.argv[1]
print("ExifTool", EXIFTOOL_VERSION)
m = MetaData(file, et_process)
dt = m.date_time()
print(dt)
print("%sx%s" % (m.width(), m.height()))
print("Length:", m.length())
print("FPS: ", m.frames_per_second())
print("Codec:", m.codec())
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