X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2Fextractor%2Fcommon.py;h=dbae75406233ae8d5d2db2acf2090e6522a91295;hb=4bba371644818d79b5f8481b5b31c53ea8ecbcc5;hp=c2aa3a7495d2591ac6b2a50dfd19702a4a633283;hpb=4de6131090e0232c7cc99bcaafe6a3e71269b7af;p=youtube-dl

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index c2aa3a749..dbae75406 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -165,6 +165,7 @@ class InfoExtractor(object):
                     with the "ext" entry and one of:
                         * "data": The subtitles file contents
                         * "url": A URL pointing to the subtitles file
+                    "ext" will be calculated from URL if missing
     automatic_captions: Like 'subtitles', used by the YoutubeIE for
                     automatically generated captions
     duration:       Length of the video in seconds, as an integer.
@@ -1152,7 +1153,9 @@ class InfoExtractor(object):
                     }
                 f4m_url += '&' if '?' in f4m_url else '?'
                 f4m_url += compat_urllib_parse.urlencode(f4m_params)
-                formats.extend(self._extract_f4m_formats(f4m_url, video_id, f4m_id='hds'))
+                f4m_formats = self._extract_f4m_formats(f4m_url, video_id, f4m_id='hds', fatal=False)
+                if f4m_formats:
+                    formats.extend(f4m_formats)
                 continue
 
             if src_url.startswith('http') and self._is_valid_url(src, video_id):