DEFAULT_USER_AGENT  143 libavformat/http.c     { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
DEFAULT_USER_AGENT  146 libavformat/http.c     { "user-agent", "use the \"user_agent\" option instead", OFFSET(user_agent_deprecated), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D|AV_OPT_FLAG_DEPRECATED },
DEFAULT_USER_AGENT 1268 libavformat/http.c     if (strcmp(s->user_agent_deprecated, DEFAULT_USER_AGENT)) {