WhepFrom

WHEP to RTP/RTSP tool

This tool has two working mode:

• rtp
• rtsp as client

Options

Option	Default	Description
-o, --output	sdp://0.0.0.0:8555	Output target: rtp:// / rtsp:// / sdp://
-w, --whep	required	WHEP endpoint URL
--sdp-file	output.sdp	SDP filename to write (RTP mode)
-t, --token	none	Bearer token for WHEP authentication
--command	none	Run a command as child process
--channel	none	DataChannel <-> UDP forwarding URL, e.g. udp://0.0.0.0:9001?host=127.0.0.1&port=9000
--ice-server	none	ICE server for gathering, repeatable; format <url>[,<username>[,<credential>]]. Defaults to none — host candidates only (WHIP/WHEP endpoints advertise their own ICE servers via Link headers)
-v	warn	Increase verbosity (-v info, -vv debug, -vvv trace)

RTP

RTP mode need target and sdp file

whepfrom -o rtp://{target_ip}?video={video_port}&audio={audio_port} -w http://localhost:7777/whep/777 --sdp-file output.sdp

whepfrom -o rtp://localhost?video=9000&audio=9002 -w http://localhost:7777/whep/777 --sdp-file output.sdp

The URL's own port also works: video goes to it and audio to port + 2 (the RTP/AVP convention), while ?video=/?audio= still override per track:

whepfrom -o rtp://localhost:9000 -w http://localhost:7777/whep/777 --sdp-file output.sdp

A multicast group as the host makes whepfrom a self-contained WHEP → multicast bridge — the tool-side counterpart of live777's rtp:// output target:

whepfrom -o rtp://230.1.1.1:1720 -w http://localhost:7777/whep/777 --sdp-file output.sdp

Multicast options ride as query parameters: ?ttl=16 (IPv4 TTL / IPv6 hops, default 1) and ?interface=... (an IPv4 interface address for IPv4 groups, an interface index or name for IPv6 groups). Both are rejected for unicast destinations.

Use ffplay play

ffplay -protocol_whitelist rtp,file,udp -i output.sdp

Use vlc play

vlc output.sdp

RTSP from live777

The rtsp-listen (whepfrom as RTSP server) mode was removed. live777 has a built-in RTSP server for every stream — pull directly instead:

ffplay rtsp://localhost:8554/777

Use transport tcp

ffplay rtsp://localhost:8554/777 -rtsp_transport tcp

RTSP Client

whepfrom as a client, push stream from RTSP Server

whepfrom -w http://localhost:7777/whip/777 -o rtsp://127.0.0.1:8554

Use transport tcp

whepfrom -w http://localhost:7777/whep/test-rtsp -o rtsp://localhost:8554/test-rtsp?transport=tcp