Source code for subliminal.refiners.metadata

# -*- coding: utf-8 -*-
import logging
import os

from babelfish import Error as BabelfishError, Language
from enzyme import MKV

logger = logging.getLogger(__name__)


[docs]def refine(video, embedded_subtitles=True, **kwargs): """Refine a video by searching its metadata. Several :class:`~subliminal.video.Video` attributes can be found: * :attr:`~subliminal.video.Video.resolution` * :attr:`~subliminal.video.Video.video_codec` * :attr:`~subliminal.video.Video.audio_codec` * :attr:`~subliminal.video.Video.subtitle_languages` :param bool embedded_subtitles: search for embedded subtitles. """ # skip non existing videos if not video.exists: return # check extensions extension = os.path.splitext(video.name)[1] if extension == '.mkv': with open(video.name, 'rb') as f: mkv = MKV(f) # main video track if mkv.video_tracks: video_track = mkv.video_tracks[0] # resolution if video_track.height in (480, 720, 1080): if video_track.interlaced: video.resolution = '%di' % video_track.height else: video.resolution = '%dp' % video_track.height logger.debug('Found resolution %s', video.resolution) # video codec if video_track.codec_id == 'V_MPEG4/ISO/AVC': video.video_codec = 'H.264' logger.debug('Found video_codec %s', video.video_codec) elif video_track.codec_id == 'V_MPEG4/ISO/SP': video.video_codec = 'DivX' logger.debug('Found video_codec %s', video.video_codec) elif video_track.codec_id == 'V_MPEG4/ISO/ASP': video.video_codec = 'Xvid' logger.debug('Found video_codec %s', video.video_codec) else: logger.warning('MKV has no video track') # main audio track if mkv.audio_tracks: audio_track = mkv.audio_tracks[0] # audio codec if audio_track.codec_id == 'A_AC3': video.audio_codec = 'Dolby Digital' logger.debug('Found audio_codec %s', video.audio_codec) elif audio_track.codec_id == 'A_DTS': video.audio_codec = 'DTS' logger.debug('Found audio_codec %s', video.audio_codec) elif audio_track.codec_id == 'A_AAC': video.audio_codec = 'AAC' logger.debug('Found audio_codec %s', video.audio_codec) else: logger.warning('MKV has no audio track') # subtitle tracks if mkv.subtitle_tracks: if embedded_subtitles: embedded_subtitle_languages = set() for st in mkv.subtitle_tracks: if st.language: try: embedded_subtitle_languages.add(Language.fromalpha3b(st.language)) except BabelfishError: logger.error('Embedded subtitle track language %r is not a valid language', st.language) embedded_subtitle_languages.add(Language('und')) elif st.name: try: embedded_subtitle_languages.add(Language.fromname(st.name)) except BabelfishError: logger.debug('Embedded subtitle track name %r is not a valid language', st.name) embedded_subtitle_languages.add(Language('und')) else: embedded_subtitle_languages.add(Language('und')) logger.debug('Found embedded subtitle %r', embedded_subtitle_languages) video.subtitle_languages |= embedded_subtitle_languages else: logger.debug('MKV has no subtitle track') else: logger.debug('Unsupported video extension %s', extension)