diff --git a/src/you_get/common.py b/src/you_get/common.py
index 7f76aaac..c2b585a6 100755
--- a/src/you_get/common.py
+++ b/src/you_get/common.py
@@ -916,6 +916,11 @@ def download_url_ffmpeg(url,title, ext,params={}, total_size=0, output_dir='.',
 
     from .processor.ffmpeg import has_ffmpeg_installed, ffmpeg_download_stream
     assert has_ffmpeg_installed(), "FFmpeg not installed."
+    global output_filename
+    if(output_filename)
+        dotPos = output_filename.rfind(".")
+        title = output_filename[:dotPos]
+        ext = output_filename[dotPos+1:]
     ffmpeg_download_stream(url, title, ext, params, output_dir)
 
 def playlist_not_supported(name):