98 lines
2.6 KiB
Python
98 lines
2.6 KiB
Python
"""
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Author: Jaisen Mathai <jaisen@jmathai.com>
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Video package that handles all video operations
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"""
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# load modules
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from sys import argv
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import mimetypes
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import os
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import re
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import subprocess
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import time
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from elodie.media.media import Media
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"""
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Video class for general video operations
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"""
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class Video(Media):
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# class / static variable accessible through get_valid_extensions()
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__valid_extensions = ('avi','m4v','mov','mp4','3gp')
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"""
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@param, source, string, The fully qualified path to the video file
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"""
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def __init__(self, source=None):
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super(Video, self).__init__(source)
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"""
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Get the date which the video was taken.
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The date value returned is defined by the min() of mtime and ctime.
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@returns, time object or None for non-video files or 0 timestamp
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"""
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def get_date_taken(self):
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if(not self.is_valid()):
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return None
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source = self.source
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seconds_since_epoch = min(os.path.getmtime(source), os.path.getctime(source))
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if(seconds_since_epoch == 0):
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return None
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return time.gmtime(seconds_since_epoch)
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"""
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Get the duration of a video in seconds.
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Uses ffmpeg/ffprobe
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@returns, string or None for a non-video file
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"""
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def get_duration(self):
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if(not self.is_valid()):
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return None
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source = self.source
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result = subprocess.Popen(['ffprobe', source],
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stdout = subprocess.PIPE, stderr = subprocess.STDOUT)
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for key in result.stdout.readlines():
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if 'Duration' in key:
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return re.search('(\d{2}:\d{2}.\d{2})', key).group(1).replace('.', ':')
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return None
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"""
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Get a dictionary of metadata for a video.
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All keys will be present and have a value of None if not obtained.
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@returns, dictionary or None for non-video files
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"""
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def get_metadata(self):
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if(not self.is_valid()):
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return None
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source = self.source
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metadata = {
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"date_taken": self.get_date_taken(),
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"length": self.get_duration(),
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"mime_type": self.get_mimetype(),
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"base_name": os.path.splitext(os.path.basename(source))[0],
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"extension": self.get_extension()
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}
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return metadata
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"""
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Static method to access static __valid_extensions variable.
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@returns, tuple
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"""
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@classmethod
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def get_valid_extensions(Video):
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return Video.__valid_extensions
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class Transcode(object):
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# Constructor takes a video object as it's parameter
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def __init__(self, video=None):
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self.video = video
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