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-rw-r--r--youtube_dl/extractor/youtube.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index e4b26b84f..8b91fff18 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -780,8 +780,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
fo for fo in formats
if fo['format_id'] == format_id)
except StopIteration:
- f.update(self._formats.get(format_id, {}).items())
- formats.append(f)
+ full_info = self._formats.get(format_id, {}).copy()
+ full_info.update(f)
+ formats.append(full_info)
else:
existing_format.update(f)
return formats