This web server emulates a SiliconDust HDHomeRun by its HTTP API for use with Plex's DVR feature. It is designed for use with HLS .m3u8 streams, although any input format accepted by ffmpeg should work.
Features
Multiple channels
XMLTV file generation (it just creates a generic 24/7 programme for each available channel)
Running
Download a binary release from GitHub, or clone the repository and compile on your machine (e.g. with GOOS=linux GOARCH=amd64 go build -o plex-dvr-hls-linux-amd64 cmd/main.go)
Create a config.json in the working directory and fill in the necessary. Possible values for encoder_profile are vaapi, video_toolbox, omx and cpu. A sample config.example.json is available on GitHub.
Create a channels.json and fill in the necessary. A sample channels.example.json is available on GitHub.
Add the server to the Plex DVR e.g. http://<ip of machine>:5004. When prompted for an Electronic Programme Guide, you can either use one if it's available, or use the auto-generated one by entering http://<ip of machine>:5004/xmltv