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Matic (Framework 13 AMD AI 300)

HDMI Capture Dongle

View another machine's display (e.g. Mac Mini) via a USB HDMI capture dongle.

Prerequisites

Packages (home-manager/packages/default.nix, isDesktop):

  • mpv — video player
  • v4l-utils — device listing/troubleshooting

User groups (named-hosts/matic/default.nix):

  • video — access to capture device
  • audio — access to audio stream

Usage

  1. Plug the HDMI capture dongle into the Framework USB port
  2. Connect an HDMI cable from the source machine to the dongle
  3. Identify the device:
v4l2-ctl --list-devices
  1. Open the video feed (replace /dev/video0 with the correct device):
mpv av://v4l2:/dev/video0 --profile=low-latency --untimed

For audio passthrough (if the dongle supports it):

mpv av://v4l2:/dev/video0 --profile=low-latency --untimed --audio-device=auto