av_log(NULL, AV_LOG_INFO, " (descriptions)");
if (st->disposition & AV_DISPOSITION_DEPENDENT)
av_log(NULL, AV_LOG_INFO, " (dependent)");
av_log(NULL, AV_LOG_INFO, " (descriptions)");
if (st->disposition & AV_DISPOSITION_DEPENDENT)
av_log(NULL, AV_LOG_INFO, " (dependent)");