diff options
| -rw-r--r-- | youtube_dl/utils.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py index f07679c76..b3abfbc11 100644 --- a/youtube_dl/utils.py +++ b/youtube_dl/utils.py @@ -1349,9 +1349,12 @@ def parse_duration(s): return res -def prepend_extension(filename, ext): +def prepend_extension(filename, ext, expected_real_ext=None): name, real_ext = os.path.splitext(filename) - return '{0}.{1}{2}'.format(name, ext, real_ext) + return ( + '{0}.{1}{2}'.format(name, ext, real_ext) + if not expected_real_ext or real_ext[1:] == expected_real_ext + else '{0}.{1}'.format(filename, ext)) def check_executable(exe, args=[]): |