[abc] add support for audio extraction

youtube_dl/extractor/abc.py

@@ -36,6 +36,15 @@ class ABCIE(InfoExtractor):
             'title': 'Marriage Equality: Warren Entsch introduces same sex marriage bill',
         },
         'add_ie': ['Youtube'],
+    }, {
+        'url': 'http://www.abc.net.au/news/2015-10-23/nab-lifts-interest-rates-following-westpac-and-cba/6880080',
+        'md5': 'b96eee7c9edf4fc5a358a0252881cc1f',
+        'info_dict': {
+            'id': '6880080',
+            'ext': 'mp3',
+            'title': 'NAB lifts interest rates, following Westpac and CBA',
+            'description': 'md5:f13d8edc81e462fce4a0437c7dc04728',
+        },
     }]
 
     def _real_extract(self, url):
@@ -43,7 +52,7 @@ class ABCIE(InfoExtractor):
         webpage = self._download_webpage(url, video_id)
 
         mobj = re.search(
-            r'inline(?P<type>Video|YouTube)Data\.push\((?P<json_data>[^)]+)\);',
+            r'inline(?P<type>Video|Audio|YouTube)Data\.push\((?P<json_data>[^)]+)\);',
             webpage)
         if mobj is None:
             raise ExtractorError('Unable to extract video urls')
@@ -60,11 +69,13 @@ class ABCIE(InfoExtractor):
 
         formats = [{
             'url': url_info['url'],
+            'vcodec': url_info.get('codec') if mobj.group('type') == 'Video' else 'none',
             'width': int_or_none(url_info.get('width')),
             'height': int_or_none(url_info.get('height')),
             'tbr': int_or_none(url_info.get('bitrate')),
             'filesize': int_or_none(url_info.get('filesize')),
         } for url_info in urls_info]
+
         self._sort_formats(formats)
 
         return {