SpiralP / rust-webrtc-gstreamer

rust-webrtc-gstreamer

Hosts a low-latency WebRTC video server that takes an input source from normal tools like OBS.

Building

• Node.js with NPM

• GStreamer v1.18+ development installer and runtime installer

pkg-config should be able to find gstreamer-1.0, gstreamer-sdp-1.0, and similar plugins

Windows

GStreamer needs to have additional features set in installer:

• restricted codecs
• libav wrapper

macOS

brew doesn't come with gstreamer-sdp-1.0, so you have to use the main download (which puts things in a weird /Library/Frameworks/GStreamer.framework/Versions/Current location, make sure to set PKG_CONFIG_PATH to the lib/pkgconfig directory)

Linux

take a look at my Dockerfile, debian:testing or ubuntu 20.10 (groovy) have gstreamer 1.18

Install

cargo install --git https://github.com/SpiralP/rust-webrtc-gstreamer.git

Input

tries to auto-detect via decodebin, but must be 2-stream tcp mpeg-ts

---

OBS with tcp url like tcp://127.0.0.1:1935/

• x264 works
• my OBS' NVENC H.264 doesn't work, but ffmpeg's h264_nvenc does work

---

FFmpeg

ffmpeg -re -i a.mp4 -vcodec libx264 -acodec aac -ac 2 -f mpegts tcp://127.0.0.1:1935/

Reference

https://github.com/centricular/gstwebrtc-demos/blob/e4b86bc4f151e35222aff1bf7e46cec016e7b0ee/multiparty-sendrecv/gst-rust/src/main.rs#L311

http://www.francescpinyol.cat/gstreamer.html

Weirdness

to fix null line in sdp a=fingerprint:sha-256 (null):

• export OPENSSL_CONF=""