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gh-2 Write time to EXIF for videos if only available from the file properties (modified/access)

This commit is contained in:
Jaisen Mathai 2015-11-28 23:58:20 -08:00
parent a7aee65ca0
commit 67a47db73d
1 changed files with 17 additions and 7 deletions
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22
elodie/media/video.py
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@ -87,16 +87,21 @@ class Video(Media):
return None return None
source = self.source source = self.source
seconds_since_epoch = min(os.path.getmtime(source), os.path.getctime(source))
# We need to parse a string from EXIF into a timestamp. # We need to parse a string from EXIF into a timestamp.
# we use date.strptime -> .timetuple -> time.mktime to do the conversion in the local timezone # We use date.strptime -> .timetuple -> time.mktime to do the conversion in the local timezone
# If the time is not found in EXIF we update EXIF
seconds_since_epoch = min(os.path.getmtime(source), os.path.getctime(source))
time_found_in_exif = False
exif_data = self.get_exif() exif_data = self.get_exif()
for key in ['Creation Date', 'Media Create Date']: for key in ['Creation Date', 'Media Create Date']:
date = re.search('%s +: +([0-9: ]+)' % key, exif_data) date = re.search('%s +: +([0-9: ]+)' % key, exif_data)
if(date is not None): if(date is not None):
date_string = date.group(1) date_string = date.group(1)
try: try:
seconds_since_epoch = time.mktime(datetime.strptime(date_string, '%Y:%m:%d %H:%M:%S').timetuple()) exif_seconds_since_epoch = time.mktime(datetime.strptime(date_string, '%Y:%m:%d %H:%M:%S').timetuple())
if(exif_seconds_since_epoch < seconds_since_epoch):
seconds_since_epoch = exif_seconds_since_epoch
time_found_in_exif = True
break break
except: except:
pass pass
@ -104,6 +109,10 @@ class Video(Media):
if(seconds_since_epoch == 0): if(seconds_since_epoch == 0):
return None return None
# If the time wasn't found in EXIF we need to add it there since the modified/access times frequently change
if(time_found_in_exif == False):
self.set_datetime(datetime.fromtimestamp(seconds_since_epoch))
return time.gmtime(seconds_since_epoch) return time.gmtime(seconds_since_epoch)
""" """
@ -282,10 +291,11 @@ class Video(Media):
# We create a temporary file to save the modified file to. # We create a temporary file to save the modified file to.
# If the modification is successful we will update the existing file. # If the modification is successful we will update the existing file.
metadata = self.get_metadata() # We can't call self.get_metadata else we will run into infinite loops
# metadata = self.get_metadata()
temp_movie = None temp_movie = None
with tempfile.NamedTemporaryFile() as temp_file: with tempfile.NamedTemporaryFile() as temp_file:
temp_movie = '%s.%s' % (temp_file.name, metadata['extension']) temp_movie = '%s.%s' % (temp_file.name, self.get_extension())
# We need to block until the child process completes. # We need to block until the child process completes.
# http://stackoverflow.com/a/5631819/1318758 # http://stackoverflow.com/a/5631819/1318758
@ -300,7 +310,7 @@ class Video(Media):
# Before we do anything destructive we confirm that the file is in tact. # Before we do anything destructive we confirm that the file is in tact.
check_media = Video(temp_movie) check_media = Video(temp_movie)
check_metadata = check_media.get_metadata() check_metadata = check_media.get_metadata()
if(check_metadata['latitude'] is None or check_metadata['longitude'] is None or check_metadata['date_taken'] is None): if(('latitude' in kwargs and 'longitude' in kwargs and check_metadata['latitude'] is None and check_metadata['longitude'] is None) or ('time' in kwargs and check_metadata['date_taken'] is None)):
if(constants.debug == True): if(constants.debug == True):
print 'Something went wrong updating video metadata' print 'Something went wrong updating video metadata'
return False return False