FFmpegMetadataPP; Write temporary file to `something.temp.{ext}` (fixes #2079)

[youtube-dl] / youtube_dl / utils.py

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index da5143c8ef50eb936abc4a7de98c33f7aa10c5b5..fc10fba6327ae17223431da24aae80e341712df3 100644 (file)
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -1119,3 +1119,8 @@ def parse_duration(s):
         if m.group('hours'):
             res += int(m.group('hours')) * 60 * 60
     return res
+
+
+def prepend_extension(filename, ext):
+    name, real_ext = os.path.splitext(filename) 
+    return u'{0}.{1}{2}'.format(name, ext, real_ext)