install go2rtc on bob

installs_on_host/go2rtc/internal/doorbird/README.md

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+# Doorbird
+
+[`new in v1.9.8`](https://github.com/AlexxIT/go2rtc/releases/tag/v1.9.8)
+
+This source type supports [Doorbird](https://www.doorbird.com/) devices including MJPEG stream, audio stream as well as two-way audio.
+
+It is recommended to create a separate user within your doorbird setup for go2rtc. Minimum permissions for the user are:
+
+- Watch always
+- API operator
+
+## Configuration
+
+```yaml
+streams:
+  doorbird1:
+    - rtsp://admin:password@192.168.1.123:8557/mpeg/720p/media.amp  # RTSP stream
+    - doorbird://admin:password@192.168.1.123?media=video           # MJPEG stream
+    - doorbird://admin:password@192.168.1.123?media=audio           # audio stream
+    - doorbird://admin:password@192.168.1.123                       # two-way audio
+```

installs_on_host/go2rtc/internal/doorbird/doorbird.go

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+package doorbird
+
+import (
+	"net/url"
+
+	"github.com/AlexxIT/go2rtc/internal/streams"
+	"github.com/AlexxIT/go2rtc/pkg/core"
+	"github.com/AlexxIT/go2rtc/pkg/doorbird"
+)
+
+func Init() {
+	streams.RedirectFunc("doorbird", func(rawURL string) (string, error) {
+		u, err := url.Parse(rawURL)
+		if err != nil {
+			return "", err
+		}
+
+		// https://www.doorbird.com/downloads/api_lan.pdf
+		switch u.Query().Get("media") {
+		case "video":
+			u.Path = "/bha-api/video.cgi"
+		case "audio":
+			u.Path = "/bha-api/audio-receive.cgi"
+		default:
+			return "", nil
+		}
+
+		u.Scheme = "http"
+
+		return u.String(), nil
+	})
+
+	streams.HandleFunc("doorbird", func(source string) (core.Producer, error) {
+		return doorbird.Dial(source)
+	})
+}