@@ -252,6 +252,25 @@ static void finalize_rtp_handler_init(AVFormatContext *s, RTSPStream *rtsp_st,
}
}
+static int init_satip_stream(AVFormatContext *s)
+{
+ RTSPState *rt = s->priv_data;
+ RTSPStream *rtsp_st = av_mallocz(sizeof(RTSPStream));
+ if (!rtsp_st)
+ return AVERROR(ENOMEM);
+ dynarray_add(&rt->rtsp_streams,
+ &rt->nb_rtsp_streams, rtsp_st);
+
+ rtsp_st->sdp_payload_type = 33; // MP2T
+ av_strlcpy(rtsp_st->control_url,
+ rt->control_uri, sizeof(rtsp_st->control_url));
+
+ rtsp_st->stream_index = -1;
+ init_rtp_handler(&ff_mpegts_dynamic_handler, rtsp_st, NULL);
+ finalize_rtp_handler_init(s, rtsp_st, NULL);
+ return 0;
+}
+
/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
static int sdp_parse_rtpmap(AVFormatContext *s,
AVStream *st, RTSPStream *rtsp_st,
@@ -1116,6 +1135,9 @@ void ff_rtsp_parse_line(AVFormatContext *s,
} else if (av_stristart(p, "Content-Type:", &p)) {
p += strspn(p, SPACE_CHARS);
av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
+ } else if (av_stristart(p, "com.ses.streamID:", &p)) {
+ p += strspn(p, SPACE_CHARS);
+ av_strlcpy(reply->stream_id, p, sizeof(reply->stream_id));
}
}
@@ -1495,8 +1517,10 @@ int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
rtp_opened:
port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
have_port:
- snprintf(transport, sizeof(transport) - 1,
- "%s/UDP;", trans_pref);
+ av_strlcpy(transport, trans_pref, sizeof(transport));
+ av_strlcat(transport,
+ rt->server_type == RTSP_SERVER_SATIP ? ";" : "/UDP;",
+ sizeof(transport));
if (rt->server_type != RTSP_SERVER_REAL)
av_strlcat(transport, "unicast;", sizeof(transport));
av_strlcatf(transport, sizeof(transport),
@@ -1559,6 +1583,15 @@ int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
goto fail;
}
+ if (rt->server_type == RTSP_SERVER_SATIP && reply->stream_id[0]) {
+ char proto[128], host[128], path[512], auth[128];
+ int port;
+ av_url_split(proto, sizeof(proto), auth, sizeof(auth), host, sizeof(host),
+ &port, path, sizeof(path), rt->control_uri);
+ ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL, host,
+ port, "/stream=%s", reply->stream_id);
+ }
+
/* XXX: same protocol for all streams is required */
if (i > 0) {
if (reply->transports[0].lower_transport != rt->lower_transport ||
@@ -1710,6 +1743,9 @@ redirect:
lower_rtsp_proto = "tls";
default_port = RTSPS_DEFAULT_PORT;
rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
+ } else if (!strcmp(proto, "satip")) {
+ av_strlcpy(proto, "rtsp", sizeof(proto));
+ rt->server_type = RTSP_SERVER_SATIP;
}
if (*auth) {
@@ -1857,7 +1893,9 @@ redirect:
/* request options supported by the server; this also detects server
* type */
- for (rt->server_type = RTSP_SERVER_RTP;;) {
+ if (rt->server_type != RTSP_SERVER_SATIP)
+ rt->server_type = RTSP_SERVER_RTP;
+ for (;;) {
cmd[0] = 0;
if (rt->server_type == RTSP_SERVER_REAL)
av_strlcat(cmd,
@@ -1892,9 +1930,12 @@ redirect:
break;
}
- if (CONFIG_RTSP_DEMUXER && s->iformat)
- err = ff_rtsp_setup_input_streams(s, reply);
- else if (CONFIG_RTSP_MUXER)
+ if (CONFIG_RTSP_DEMUXER && s->iformat) {
+ if (rt->server_type == RTSP_SERVER_SATIP)
+ err = init_satip_stream(s);
+ else
+ err = ff_rtsp_setup_input_streams(s, reply);
+ } else if (CONFIG_RTSP_MUXER)
err = ff_rtsp_setup_output_streams(s, host);
else
av_assert0(0);
@@ -188,6 +188,11 @@ typedef struct RTSPMessageHeader {
* Content type header
*/
char content_type[64];
+
+ /**
+ * SAT>IP com.ses.streamID header
+ */
+ char stream_id[64];
} RTSPMessageHeader;
/**
@@ -210,6 +215,7 @@ enum RTSPServerType {
RTSP_SERVER_RTP, /**< Standards-compliant RTP-server */
RTSP_SERVER_REAL, /**< Realmedia-style server */
RTSP_SERVER_WMS, /**< Windows Media server */
+ RTSP_SERVER_SATIP,/**< SAT>IP server */
RTSP_SERVER_NB
};
@@ -724,6 +724,7 @@ static int rtsp_probe(const AVProbeData *p)
#if CONFIG_TLS_PROTOCOL
av_strstart(p->filename, "rtsps:", NULL) ||
#endif
+ av_strstart(p->filename, "satip:", NULL) ||
av_strstart(p->filename, "rtsp:", NULL))
return AVPROBE_SCORE_MAX;
return 0;
From: Aman Karmani <aman@tmm1.net> The SAT>IP protocol[1] is similar to RTSP. However SAT>IP servers are assumed to speak only MP2T, so DESCRIBE is not used in the same way. When no streams are active, DESCRIBE will return 404 according to the spec (see section 3.5.7). When streams are active, DESCRIBE will return a list of all current streams along with information about their signal strengths. Previously, attemping to use ffmpeg with a rtsp:// url that points to a SAT>IP server would work with some devices, but fail due to 404 response on others. Further, if the SAT>IP server was already streaming, ffmpeg would incorrectly consume the DESCRIBE SDP response and join an existing tuner instead of requesting a new session with the URL provided by the user. These issues have been noted by many users across the internet[2][3][4]. This commit adds proper spec-compliant support for SAT>IP, including: - support for the satip:// psuedo-protocol[5] - avoiding the use of DESCRIBE - parsing and consuming the com.ses.streamID response header - using "Transport: RTP/AVP;unicast" because the optional "/UDP" suffix confuses some servers This patch has been validated against multiple SAT>IP vendor devices: - Telestar Digibit R2 (https://telestar.de/en/produkt/digibit-r1-2/) - Kathrein EXIP 418 (https://www.kathrein-ds.com/en/produkte/sat-zf-verteiltechnik/sat-ip/227/exip-418) - Kathrein EXIP 4124 (https://www.kathrein-ds.com/en/products/sat-if-signal-distribution/sat-ip/226/exip-4124) - Megasat MEG-8000 (https://www.megasat.tv/produkt/sat-ip-server-3/) - Megasat Twin (https://www.megasat.tv/en/produkt/sat-ip-server-twin/) - Triax TSS 400 (https://www.conrad.com/p/triax-tss-400-mkii-sat-ip-server-595256) [1] https://www.satip.info/sites/satip/files/resource/satip_specification_version_1_2_2.pdf [2] https://stackoverflow.com/questions/61194344/does-ffmpeg-violate-the-satip-specification-describe-syntax [3] https://github.com/kodi-pvr/pvr.iptvsimple/issues/196 [4] https://forum.kodi.tv/showthread.php?tid=359072&pid=2995884#pid2995884 [5] https://www.satip.info/resources/channel-lists/ --- libavformat/rtsp.c | 53 ++++++++++++++++++++++++++++++++++++++----- libavformat/rtsp.h | 6 +++++ libavformat/rtspdec.c | 1 + 3 files changed, 54 insertions(+), 6 deletions(-)