Merge pull request #9288 from reyyed/issue#9063fix

[ffmpeg] Fix embedding subtitles (#9063)

diff --combined youtube_dl/postprocessor/ffmpeg.py
index fa99b0c2a6aa4d39fbffdcbafd4926431794c55b,ca2d401f87e2594bce5b18c1be18491ce0815fd5..c1e9eb159ed9c2f969ad2ae3b9f90847b83cd98d
--- 1/youtube_dl/postprocessor/ffmpeg.py
--- 2/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@@ -363,8 -363,10 +363,10 @@@ class FFmpegEmbedSubtitlePP(FFmpegPostP
          input_files = [filename] + sub_filenames
  
          opts = [
-             '-map', '0',
-             '-c', 'copy',
+             '-map', '0:v',
+             '-c:v', 'copy',
+             '-map', '0:a',
+             '-c:a', 'copy',
              # Don't copy the existing subtitles, we may be running the
              # postprocessor a second time
              '-map', '-0:s',
@@@ -389,30 -391,23 +391,30 @@@
  class FFmpegMetadataPP(FFmpegPostProcessor):
      def run(self, info):
          metadata = {}
 -        if info.get('title') is not None:
 -            metadata['title'] = info['title']
 -        if info.get('upload_date') is not None:
 -            metadata['date'] = info['upload_date']
 -        if info.get('artist') is not None:
 -            metadata['artist'] = info['artist']
 -        elif info.get('uploader') is not None:
 -            metadata['artist'] = info['uploader']
 -        elif info.get('uploader_id') is not None:
 -            metadata['artist'] = info['uploader_id']
 -        if info.get('description') is not None:
 -            metadata['description'] = info['description']
 -            metadata['comment'] = info['description']
 -        if info.get('webpage_url') is not None:
 -            metadata['purl'] = info['webpage_url']
 -        if info.get('album') is not None:
 -            metadata['album'] = info['album']
 +
 +        def add(meta_list, info_list=None):
 +            if not info_list:
 +                info_list = meta_list
 +            if not isinstance(meta_list, (list, tuple)):
 +                meta_list = (meta_list,)
 +            if not isinstance(info_list, (list, tuple)):
 +                info_list = (info_list,)
 +            for info_f in info_list:
 +                if info.get(info_f) is not None:
 +                    for meta_f in meta_list:
 +                        metadata[meta_f] = info[info_f]
 +                    break
 +
 +        add('title', ('track', 'title'))
 +        add('date', 'upload_date')
 +        add(('description', 'comment'), 'description')
 +        add('purl', 'webpage_url')
 +        add('track', 'track_number')
 +        add('artist', ('artist', 'creator', 'uploader', 'uploader_id'))
 +        add('genre')
 +        add('album')
 +        add('album_artist')
 +        add('disc', 'disc_number')
  
          if not metadata:
              self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add')