Chrome/Google Cast Video and Chat Together

[Zibbp]

Likely won't implement in Ganymede but was fun to get working locally. You can combine the video and chat videos together and stream that to a chromecast device.

1. Combine video files

ffmpeg -i /path/to/video.mp4 -i /path/to/chat.mp4 -filter_complex "[1:v]crop=iw:1080:0:(ih-1080)[cropped]; \
 [0:v][cropped]hstack=inputs=2" -r 60 output.mp4

(replace 1080 and 60 with the height of the video and the FPS
2. Run a HTTP server

python3 -m http.server

3. Use go-chromecast to tell your chromecast to stream that file

./go-chromecast load http://MY_IP:8000/output.mp4 -a <CHROMECAST_IP>

I was unable to get HLS working, probably missing a header that the chromecast wants.