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go2rtc/README.md
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# go2rtc
**go2rtc** - ultimate camera streaming application with support RTSP, WebRTC, FFmpeg, RTMP, etc.
- zero-dependency and zero-config small [app for all OS](#installation) (Windows, macOS, Linux, ARM)
- zero-delay for all supported protocols (lowest possible streaming latency)
- zero-load on CPU for supported codecs
- on the fly transcoding for unsupported codecs [via FFmpeg](#source-ffmpeg)
- multi-source 2-way [codecs negotiation](#codecs-negotiation)
- streaming from private networks via [Ngrok or SSH-tunnels](#module-webrtc)
## Codecs negotiation
For example, you want to watch RTSP-stream from [Dahua IPC-K42](https://www.dahuasecurity.com/fr/products/All-Products/Network-Cameras/Wireless-Series/Wi-Fi-Series/4MP/IPC-K42) camera in your Chrome browser.
- this camera support 2-way audio standard **ONVIF Profile T**
- this camera support codecs **H264, H265** for send video, and you select `H264` in camera settings
- this camera support codecs **AAC, PCMU, PCMA** for send audio (from mic), and you select `AAC/16000` in camera settings
- this camera support codecs **AAC, PCMU, PCMA** for receive audio (to speaker), you don't need to select them
- your browser support codecs **H264, VP8, VP9, AV1** for receive video, you don't need to select them
- your browser support codecs **OPUS, PCMU, PCMA** for send and receive audio, you don't need to select them
- you can't get camera audio directly, because its audio codecs doesn't match with your browser codecs
- so you decide to use transcoding via FFmpeg and add this setting to config YAML file
- you have chosen `OPUS/48000/2` codec, because it is higher quality than the `PCMU/8000` or `PCMA/8000`
- now you have stream with two sources - **RTSP and FFmpeg**
**go2rtc** automatically match codecs for you browser and all your stream sources. This called **multi-source 2-way codecs negotiation**. And this is one of the main features of this app.
**PS.** You can select `PCMU` or `PCMA` codec in camera setting and don't use transcoding at all. Or you can select `AAC` codec for main stream and `PCMU` codec for second stream and add both RTSP to YAML config, this also will work fine.
```yaml
streams:
dahua:
- rtsp://admin:password@192.168.1.123/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif
- ffmpeg:rtsp://admin:password@192.168.1.123/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif#audio=opus
```
![](codecs.svg)
## Installation
Download binary for your OS from [latest release](https://github.com/AlexxIT/go2rtc/releases/):
- `go2rtc_win64.exe` - Windows 64-bit
- `go2rtc_win32.exe` - Windows 32-bit
- `go2rtc_linux_amd64` - Linux 64-bit
- `go2rtc_linux_i386` - Linux 32-bit
- `go2rtc_linux_arm64` - Linux ARM 64-bit (ex. Raspberry 64-bit OS)
- `go2rtc_linux_arm` - Linux ARM 32-bit (ex. Raspberry 32-bit OS)
- `go2rtc_linux_mipsel` - Linux on MIPS (ex. [Xiaomi Gateway 3](https://github.com/AlexxIT/XiaomiGateway3))
- `go2rtc_mac_amd64` - Mac with Intel
- `go2rtc_mac_arm64` - Mac with M1
Don't forget to fix the rights `chmod +x go2rtc_linux_xxx` on Linux and Mac.
## Configuration
Create file `go2rtc.yaml` next to the app.
- by default, you need to config only your `streams` links
- `api` server will start on default **3000 port**
- `rtsp` server will start on default **554 port**
- `webrtc` will use random UDP port for each connection
- `ffmpeg` will use default transcoding options (you need to install it [manually](https://ffmpeg.org/))
Available modules:
- [streams](#module-streams)
- [api](#module-api) - HTTP API (important for WebRTC support)
- [rtsp](#module-rtsp) - RTSP Server (important for FFmpeg support)
- [webrtc](#module-webrtc) - WebRTC Server (important for external access)
- [ngrok](#module-ngrok) - Ngrok integration (external access for private network)
- [ffmpeg](#source-ffmpeg) - FFmpeg integration
- [hass](#module-hass) - Home Assistant integration
- [log](#module-log) - logs config
### Module: Streams
**go2rtc** support different stream source types. You can config only one link as stream source or multiple.
Available source types:
- [rtsp](#source-rtsp) - most cameras on market
- [rtmp](#source-rtmp)
- [ffmpeg](#source-ffmpeg) - FFmpeg integration
- [exec](#source-exec) - advanced FFmpeg and GStreamer integration
- [hass](#source-hass) - Home Assistant integration
#### Source: RTSP
- Support **RTSP and RTSPS** links with multiple video and audio tracks
- Support **2-way audio** ONLY for [ONVIF Profile T](https://www.onvif.org/specs/stream/ONVIF-Streaming-Spec.pdf) cameras (back channel connection)
**Attention:** proprietary 2-way audio standards are not supported!
```yaml
streams:
sonoff_camera: rtsp://rtsp:12345678@192.168.1.123:554/av_stream/ch0
```
If your camera has two RTSP links - you can add both of them as sources. This is useful when streams has different codecs, as example AAC audio with main stream and PCMU/PCMA audio with second stream.
**Attention:** Dahua cameras has different capabilities for different RTSP links. For example, it has support multiple codecs for 2-way audio with `&proto=Onvif` in link and only one codec without it.
```yaml
streams:
dahua_camera:
- rtsp://admin:password@192.168.1.123/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif
- rtsp://admin:password@192.168.1.123/cam/realmonitor?channel=1&subtype=1
```
#### Source: RTMP
You can get stream from RTMP server, for example [Frigate](https://docs.frigate.video/configuration/rtmp). Support ONLY `H264` video codec without audio.
```yaml
streams:
rtmp_stream: rtmp://192.168.1.123/live/camera1
```
#### Source: FFmpeg
You can get any stream or file or device via FFmpeg and push it to go2rtc. The app will automatically start FFmpeg with the proper arguments when someone starts watching the stream.
Format: `ffmpeg:{input}#{params}`. Examples:
```yaml
streams:
# [FILE] all tracks will be copied without transcoding codecs
file1: ffmpeg:~/media/BigBuckBunny.mp4
# [FILE] video will be transcoded to H264, audio will be skipped
file2: ffmpeg:~/media/BigBuckBunny.mp4#video=h264
# [FILE] video will be copied, audio will be transcoded to pcmu
file3: ffmpeg:~/media/BigBuckBunny.mp4#video=copy&audio=pcmu
# [HLS] video will be copied, audio will be skipped
hls: ffmpeg:https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/gear5/prog_index.m3u8#video=copy
# [MJPEG] video will be transcoded to H264
mjpeg: ffmpeg:http://185.97.122.128/cgi-bin/faststream.jpg?stream=half&fps=15#video=h264
# [RTSP] video and audio will be copied
rtsp: ffmpeg:rtsp://rtsp:12345678@192.168.1.123:554/av_stream/ch0#video=copy&audio=copy
```
All trascoding formats has built-in templates. But you can override them via YAML config. You can also add your own formats to config and use them with source params.
```yaml
ffmpeg:
bin: ffmpeg # path to ffmpeg binary
link: -hide_banner -i {input} # if input is link
file: -hide_banner -re -stream_loop -1 -i {input} # if input not link
rtsp: -hide_banner -fflags nobuffer -flags low_delay -rtsp_transport tcp -i {input} # if input is RTSP link
output: -rtsp_transport tcp -f rtsp {output} # output
h264: "-codec:v libx264 -g 30 -preset superfast -tune zerolatency -profile main -level 4.1"
h264/ultra: "-codec:v libx264 -g 30 -preset ultrafast -tune zerolatency"
h264/high: "-codec:v libx264 -g 30 -preset superfast -tune zerolatency"
h265: "-codec:v libx265 -g 30 -preset ultrafast -tune zerolatency"
opus: "-codec:a libopus -ar 48000 -ac 2"
pcmu: "-codec:a pcm_mulaw -ar 8000 -ac 1"
pcmu/16000: "-codec:a pcm_mulaw -ar 16000 -ac 1"
pcmu/48000: "-codec:a pcm_mulaw -ar 48000 -ac 1"
pcma: "-codec:a pcm_alaw -ar 8000 -ac 1"
pcma/16000: "-codec:a pcm_alaw -ar 16000 -ac 1"
pcma/48000: "-codec:a pcm_alaw -ar 48000 -ac 1"
aac/16000: "-codec:a aac -ar 16000 -ac 1"
```
#### Source: Exec
FFmpeg source just a shortcut to exec source. You can get any stream or file or device via FFmpeg or GStreamer and push it to go2rtc via RTSP protocol:
```yaml
streams:
stream1: exec:ffmpeg -hide_banner -re -stream_loop -1 -i ~/media/BigBuckBunny.mp4 -c copy -rtsp_transport tcp -f rtsp {output}
```
#### Source: Hass
Support import camera links from [Home Assistant](https://www.home-assistant.io/) config files:
- support ONLY [Generic Camera](https://www.home-assistant.io/integrations/generic/), setup via GUI
```yaml
hass:
config: "~/.homeassistant"
streams:
generic_camera: hass:Camera1 # Settings > Integrations > Integration Name
```
### Module: API
The HTTP API is the main part for interacting with the application.
- you can use WebRTC only when HTTP API enabled
- you can disable HTTP API with `listen: ""` and use, for example, only RTSP client/server protocol
- you can enable HTTP API only on localhost with `listen: "localhost:3000"` setting
- you can change API `base_path` and host go2rtc on your main app webserver suburl
- all files from `static_dir` hosted on root path: `/`
```yaml
api:
listen: ":3000" # HTTP API port ("" - disabled)
base_path: "" # API prefix for serve on suburl
static_dir: "www" # folder for static files ("" - disabled)
```
### Module: RTSP
You can get any stream as RTSP-stream with codecs filter:
```
rtsp://192.168.1.123/{stream_name}?video={codec}&audio={codec1}&audio={codec2}
```
- you can omit the codecs, so one first video and one first audio will be selected
- you can set `?video=copy` or just `?video`, so only one first video without audio will be selected
- you can set multiple video or audio, so all of them will be selected
```yaml
rtsp:
listen: ":554"
```
### Module: WebRTC
WebRTC usually works without problems in the local network. But external access may require additional settings. It depends on what type of internet do you have.
- by default, WebRTC use two random UDP ports for each connection (for video and audio)
- you can enable one additional TCP port for all connections and use it for external access
**Static public IP**
- add some TCP port to YAML config (ex. 8555)
- forward this port on your router (you can use same 8555 port or any other)
- add your external IP-address and external port to YAML config
```yaml
webrtc:
listen: ":8555" # address of your local server (TCP)
candidates:
- 216.58.210.174:8555 # if you have static public IP-address
```
**Dynamic public IP**
- add some TCP port to YAML config (ex. 8555)
- forward this port on your router (you can use same 8555 port or any other)
- add `stun` word and external port to YAML config
- go2rtc automatically detects your external address with STUN-server
```yaml
webrtc:
listen: ":8555" # address of your local server (TCP)
candidates:
- stun:8555 # if you have dynamic public IP-address
```
**Private IP**
- add some TCP port to YAML config (ex. 8555)
- setup integration with [Ngrok service](#module-ngrok)
```yaml
webrtc:
listen: ":8555" # address of your local server (TCP)
ngrok:
command: ...
```
**Own TCP-tunnel**
If you have personal VPS, you can create TCP-tunnel and setup in the same way as "Static public IP". But use your VPS IP-address in YAML config.
**Using TURN-server**
TODO...
```yaml
webrtc:
ice_servers:
- urls: [stun:stun.l.google.com:19302]
- urls: [turn:123.123.123.123:3478]
username: your_user
credential: your_pass
```
### Module: Ngrok
With Ngrok integration you can get external access to your streams in situation when you have Internet with private IP-address.
- you may need external access for two different things:
- WebRTC stream, so you need tunnel WebRTC TCP port (ex. 8555)
- go2rtc web interface, so you need tunnel API HTTP port (ex. 3000)
- Ngrok support authorization for your web interface
- Ngrok automatically adds HTTPS to your web interface
Ngrok free subscription limitations:
- you will always get random external address (not a problem for webrtc stream)
- you can forward multiple ports but use only one Ngrok app
go2rtc will automatically get your external TCP address (if you enable it in ngrok config) and use it with WebRTC connection (if you enable it in webrtc config).
You need manually download [Ngrok agent app](https://ngrok.com/download) for your OS and register in [Ngrok service](https://ngrok.com/).
**Tunnel for only WebRTC Stream**
You need to add your [Ngrok token](https://dashboard.ngrok.com/get-started/your-authtoken) and WebRTC TCP port to YAML:
```yaml
ngrok:
command: ngrok tcp 8555 --authtoken eW91IHNoYWxsIG5vdCBwYXNzCnlvdSBzaGFsbCBub3QgcGFzcw
```
**Tunnel for WebRTC and Web interface**
You need to create `ngrok.yaml` config file and add it to go2rtc config:
```yaml
ngrok:
command: ngrok start --all --config ngrok.yaml
```
Ngrok config example:
```yaml
version: "2"
authtoken: eW91IHNoYWxsIG5vdCBwYXNzCnlvdSBzaGFsbCBub3QgcGFzcw
tunnels:
api:
addr: 3000 # use the same port as in go2rtc config
proto: http
basic_auth:
- admin:password # you can set login/pass for your web interface
webrtc:
addr: 8555 # use the same port as in go2rtc config
proto: tcp
```
### Module: Hass
go2rtc compatible with Home Assistant [RTSPtoWebRTC](https://www.home-assistant.io/integrations/rtsp_to_webrtc/) integration API.
- add integration with link to go2rtc HTTP API:
- Hass > Settings > Integrations > Add Integration > RTSPtoWebRTC > `http://192.168.1.123:3000/`
- add generic camera with RTSP link:
- Hass > Settings > Integrations > Add Integration > Generic Camera > `rtsp://...`
- use Picture Entity or Picture Glance lovelace card
- open full screen card - this is should be WebRTC stream
### Module: Log
You can set different log levels for different modules.
```yaml
log:
level: info # default level
api: trace
exec: debug
ngrok: info
rtsp: warn
streams: error
webrtc: fatal
```