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Fazantix is a live video mixer.

Features:

• headless
• low latency (1 frame?)
• mixing at 1080p resolution, 60 Hz refresh rate
• smooth transitions
• ingestion: local from v4l2/file/stdin, over the network from ffmpeg/gstreamer/...
• output: raw video to stdout
• persistent on sources dropping
• json api

Limitations:

• no audio mixing
• no interactive gui (yet, but easy to implement)

ingest

• v4l2
• ffmpeg Throw video at the port configured in the video_listen section of the config file (note that it can definitely be optimized for lower latency):

while ! ffmpeg -re -i workshop-c1-high-20231104-090421.flv.mp4 -c copy  -f mpegts tcp://172.22.10.144:7788/; do sleep 2 ; done

• local file

scenes

changing scenes

curl 'http://mixer_ip:6666/scene' -H "Content-Type: application/json" --data '{"name": "dedo"}'
curl 'http://mixer_ip:6666/scene' -H "Content-Type: application/json" --data '{"name": "default"}'
curl 'http://mixer_ip:6666/scene' -H "Content-Type: application/json" --data '{"name": "baba"}'

config file example

https://github.com/FOSDEM/video-fazantix/blob/master/sample_config.yaml