From: Aman Karmani <a...@tmm1.net>
This can be used to receive the raw mpegts stream from a SAT>IP server, by
letting avformat handle the RTSP/RTP/UDP negotiation and setup, but then simply
passing the MP2T stream through instead of demuxing it further.
For example, this command would demux/remux the mpegts stream:
ffmpeg -i
'satip://192.168.1.99:554/?src=1&freq=12188&pol=h&ro=0.35&msys=dvbs&mtype=qpsk&plts=off&sr=27500&fec=34&pids=0,17,18,167,136,47,71'
-map 0 -c copy -f mpegts -y remux.ts
Whereas this command would simply save the original stream with the original
PIDs and PAT/PMT/etc:
ffmpeg -rtsp_flags satip_raw -i
'satip://192.168.1.99:554/?src=1&freq=12188&pol=h&ro=0.35&msys=dvbs&mtype=qpsk&plts=off&sr=27500&fec=34&pids=0,17,18,167,136,47,71'
-map 0 -c copy -f mpegtsraw -y raw.ts
Signed-off-by: Aman Karmani <a...@tmm1.net>
---
libavformat/rtsp.c | 6 +++++-
libavformat/rtsp.h | 1 +
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 4a863dbac3..d3864c0c67 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -89,6 +89,7 @@ const AVOption ff_rtsp_options[] = {
RTSP_FLAG_OPTS("rtsp_flags", "set RTSP flags"),
{ "listen", "wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 =
RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" },
{ "prefer_tcp", "try RTP via TCP first, if available", 0,
AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_PREFER_TCP}, 0, 0, DEC|ENC, "rtsp_flags" },
+ { "satip_raw", "export raw MPEG-TS stream instead of demuxing", 0,
AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_SATIP_RAW}, 0, 0, DEC, "rtsp_flags" },
RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from
the server"),
{ "min_port", "set minimum local UDP port", OFFSET(rtp_port_min),
AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
{ "max_port", "set maximum local UDP port", OFFSET(rtp_port_max),
AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
@@ -256,6 +257,9 @@ static int init_satip_stream(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;
RTSPStream *rtsp_st;
+ const RTPDynamicProtocolHandler *handler =
+ (rt->rtsp_flags & RTSP_FLAG_SATIP_RAW) ? &ff_mpegtsraw_dynamic_handler
:
+ &ff_mpegts_dynamic_handler;
rtsp_st = av_mallocz(sizeof(RTSPStream));
if (!rtsp_st)
return AVERROR(ENOMEM);
@@ -265,7 +269,7 @@ static int init_satip_stream(AVFormatContext *s)
av_strlcpy(rtsp_st->control_url,
rt->control_uri, sizeof(rtsp_st->control_url));
rtsp_st->sdp_payload_type = 33; // MP2T
- init_rtp_handler(&ff_mpegts_dynamic_handler, rtsp_st, NULL);
+ init_rtp_handler(handler, rtsp_st, NULL);
finalize_rtp_handler_init(s, rtsp_st, NULL);
return 0;
}
diff --git a/libavformat/rtsp.h b/libavformat/rtsp.h
index c7c3b3cb52..8a9424a1c5 100644
--- a/libavformat/rtsp.h
+++ b/libavformat/rtsp.h
@@ -429,6 +429,7 @@ typedef struct RTSPState {
#define RTSP_FLAG_RTCP_TO_SOURCE 0x8 /**< Send RTCP packets to the source
address of received packets. */
#define RTSP_FLAG_PREFER_TCP 0x10 /**< Try RTP via TCP first if possible. */
+#define RTSP_FLAG_SATIP_RAW 0x20 /**< Export SAT>IP stream as raw MPEG-TS
*/
typedef struct RTSPSource {
char addr[128]; /**< Source-specific multicast include source IP address
(from SDP content) */
--
2.29.2
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