+        # Construct regular HTTP download URLs
+        replacements = {
+            'audio': {
+                'format_id': 'mp3',
+                'pattern': r'^nas2\.share/wavrss/',
+                'repl': 'http://rsspod.rtp.pt/podcasts/',
+                'vcodec': 'none',
+            },
+            'video': {
+                'format_id': 'mp4_h264',
+                'pattern': r'^nas2\.share/h264/',
+                'repl': 'http://rsspod.rtp.pt/videocasts/',
+                'vcodec': 'h264',
+            },
+        }
+        r = replacements[config['type']]
+        if re.match(r['pattern'], config['file']) is not None:
+            formats.append({
+                'format_id': r['format_id'],
+                'url': re.sub(r['pattern'], r['repl'], config['file']),
+                'vcodec': r['vcodec'],
+            })
+
+        self._sort_formats(formats)
+