if (*desc) {
if (av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
if (*desc) {
if (av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");