+ if(stream->codec_id == AV_CODEC_ID_XSUB
+ && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
+ const char* langstr = av_convert_lang_to(t->value, AV_LANG_ISO639_1);
+ t = NULL;
+ if (langstr) {
+ char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
+ ff_riff_write_info_tag(s->pb, "strn", str);
+ av_free(str);
+ }
+ }