[extractor/common] Extract the first of a seq of videos in a .smil file

youtube_dl/extractor/common.py

@@ -921,10 +921,23 @@ class InfoExtractor(object):
 
         formats = []
         rtmp_count = 0
+        if smil.findall('./body/seq/video'):
+            video = smil.findall('./body/seq/video')[0]
+            fmts, rtmp_count = self._parse_smil_video(video, base, rtmp_count)
+            formats.extend(fmts)
+        else:
             for video in smil.findall('./body/switch/video'):
+                fmts, rtmp_count = self._parse_smil_video(video, base, rtmp_count)
+                formats.extend(fmts)
+
+        self._sort_formats(formats)
+
+        return formats
+
+    def _parse_smil_video(self, video, base, rtmp_count):
         src = video.get('src')
         if not src:
-                continue
+            return ([], rtmp_count)
         bitrate = int_or_none(video.get('system-bitrate') or video.get('systemBitrate'), 1000)
         width = int_or_none(video.get('width'))
         height = int_or_none(video.get('height'))
@@ -937,11 +950,11 @@ class InfoExtractor(object):
                     proto = 'http'
         ext = video.get('ext')
         if proto == 'm3u8':
-                formats.extend(self._extract_m3u8_formats(src, video_id, ext))
+            return (self._extract_m3u8_formats(src, video_id, ext), rtmp_count)
         elif proto == 'rtmp':
             rtmp_count += 1
             streamer = video.get('streamer') or base
-                formats.append({
+            return ([{
                 'url': streamer,
                 'play_path': src,
                 'ext': 'flv',
@@ -949,10 +962,7 @@ class InfoExtractor(object):
                 'tbr': bitrate,
                 'width': width,
                 'height': height,
-                })
-        self._sort_formats(formats)
-
-        return formats
+            }], rtmp_count)
 
     def _live_title(self, name):
         """ Generate the title for a live video """