diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py index 7757bf9502..71230323cd 100644 --- a/youtube_dl/extractor/common.py +++ b/youtube_dl/extractor/common.py @@ -708,7 +708,7 @@ class InfoExtractor(object): return self._html_search_meta('twitter:player', html, 'twitter card player') - def _sort_formats(self, formats): + def _sort_formats(self, formats, field_preference=None): if not formats: raise ExtractorError('No video formats found') @@ -718,6 +718,9 @@ class InfoExtractor(object): if not f.get('ext') and 'url' in f: 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') if preference is None: proto = f.get('protocol')