[extractor/common] Add ability to specify custom field preference for `_sort_formats`

pull/5494/head
Sergey M․ 10 years ago
parent b524a001d6
commit 3ded7bac16

@ -708,7 +708,7 @@ class InfoExtractor(object):
return self._html_search_meta('twitter:player', html, return self._html_search_meta('twitter:player', html,
'twitter card player') 'twitter card player')
def _sort_formats(self, formats): def _sort_formats(self, formats, field_preference=None):
if not formats: if not formats:
raise ExtractorError('No video formats found') raise ExtractorError('No video formats found')
@ -718,6 +718,9 @@ class InfoExtractor(object):
if not f.get('ext') and 'url' in f: if not f.get('ext') and 'url' in f:
f['ext'] = determine_ext(f['url']) f['ext'] = determine_ext(f['url'])
if isinstance(field_preference, (list, tuple)):
return tuple(f.get(field) if f.get(field) is not None else -1 for field in field_preference)
preference = f.get('preference') preference = f.get('preference')
if preference is None: if preference is None:
proto = f.get('protocol') proto = f.get('protocol')

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