diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 99825e343..166fe8b15 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -1701,6 +1701,7 @@ class YoutubeDL(object):
                 self.report_error('unable to download video data: %s' % error_to_compat_str(err))
                 return
             except (OSError, IOError) as err:
+                traceback.print_exc()
                 raise UnavailableVideoError(err)
             except (ContentTooShortError, ) as err:
                 self.report_error('content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))