diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 7f054cdff..4c238c555 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -1074,6 +1074,7 @@ class YoutubeDL(object):
                             selected_format = {
                                 'requested_formats': formats_info,
                                 'format': rf,
+                                'format_id': rf,
                                 'ext': formats_info[0]['ext'],
                                 'width': formats_info[0].get('width'),
                                 'height': formats_info[0].get('height'),