[youtube] Don't override format info from the dash manifest (fixes #4911)

9 years ago · ba61796458
parent 3255fe7141
commit ba61796458
1 changed files with 3 additions and 2 deletions
--- 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