diff --git a/youtube_dl/downloader/f4m.py b/youtube_dl/downloader/f4m.py
index f8da04f69..581fa7b71 100644
--- a/youtube_dl/downloader/f4m.py
+++ b/youtube_dl/downloader/f4m.py
@@ -332,6 +332,7 @@ class F4mFD(FragmentFD):
         ctx = {
             'filename': filename,
             'total_frags': total_frags,
+            'live': live,
         }
 
         self._prepare_frag_download(ctx)