[extractor/common] Restrict checks when auto calculating tbr

8 years ago · 350cf045d8
1 changed files with 1 additions and 1 deletions
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@ -828,7 +828,7 @@ class InfoExtractor(object):
        for f in formats:
            # Automatically determine tbr when missing based on abr and vbr (improves
            # formats sorting in some cases)
-            if 'tbr' not in f and 'abr' in f and 'vbr' in f:
+            if 'tbr' not in f and f.get('abr') is not None and f.get('vbr') is not None:
                f['tbr'] = f['abr'] + f['vbr']

        def _formats_key(f):