[srgssr] Extract subtitles from HLS manifests

yt_dlp/extractor/srgssr.py

@@ -87,6 +87,7 @@ class SRGSSRIE(InfoExtractor):
         title = media_data['title']
 
         formats = []
+        subtitles = {}
         q = qualities(['SD', 'HD'])
         for source in (media_data.get('resourceList') or []):
             format_url = source.get('url')
@@ -104,12 +105,16 @@ class SRGSSRIE(InfoExtractor):
                 if source.get('tokenType') == 'AKAMAI':
                     format_url = self._get_tokenized_src(
                         format_url, media_id, format_id)
-                    formats.extend(self._extract_akamai_formats(
-                        format_url, media_id))
+                    fmts, subs = self._extract_akamai_formats_and_subtitles(
+                        format_url, media_id)
+                    formats.extend(fmts)
+                    subtitles = self._merge_subtitles(subtitles, subs)
                 elif protocol == 'HLS':
-                    formats.extend(self._extract_m3u8_formats(
+                    m3u8_fmts, m3u8_subs = self._extract_m3u8_formats_and_subtitles(
                         format_url, media_id, 'mp4', 'm3u8_native',
-                        m3u8_id=format_id, fatal=False))
+                        m3u8_id=format_id, fatal=False)
+                    formats.extend(m3u8_fmts)
+                    subtitles = self._merge_subtitles(subtitles, m3u8_subs)
             elif protocol in ('HTTP', 'HTTPS'):
                 formats.append({
                     'format_id': format_id,
@@ -133,7 +138,6 @@ class SRGSSRIE(InfoExtractor):
                 })
         self._sort_formats(formats)
 
-        subtitles = {}
         if media_type == 'video':
             for sub in (media_data.get('subtitleList') or []):
                 sub_url = sub.get('url')