hls_formats = self._extract_m3u8_formats(
resources.get('stream'), video_name, 'mp4', m3u8_id=format_id)
for f in hls_formats:
- f['acodec'] = 'none'
+ if not f.get('height'):
+ f['vcodec'] = 'none'
+ else:
+ f['acodec'] = 'none'
formats.extend(hls_formats)
audio_download = talk_info.get('audioDownload')