5972ac2736
Kodi was overkill for a phone-driven "play this video" box: a full media center (web server, CEC, library DB) whose surface area is exactly what wedged the Pi -- a video-decode session left Kodi stuck in an uninterruptible firmware-mailbox call after a kernel keyring Oops, dead until a power cycle. mpv is just a video player: hardware-decoded straight on KMS/DRM, no media-center baggage. It runs as its own --idle systemd service holding the playlist, so playback keeps going even if the app/phone/WiFi drop -- the same autonomy Kodi's native playlist gave us. The app talks to it over its JSON IPC Unix socket. PlayerStateManager keeps the exact same public API, so the Flask routes, templates, and UI are unchanged (only the engine underneath swaps out). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
38 lines
1.3 KiB
Text
38 lines
1.3 KiB
Text
[Unit]
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Description=mpv video player (KMS/DRM -- the actual player)
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# Needs the DRM/HDMI + sound devices present; takes over the console VT.
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After=local-fs.target systemd-udev-settle.service sound.target
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Wants=systemd-udev-settle.service
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Conflicts=getty@tty1.service
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[Service]
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User=${MEDIAPI_USER}
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# mpv on DRM/KMS needs: video+render (GPU/DRM), input (remotes/keyboard), audio
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# (HDMI/ALSA), tty (own the VT). PAMName=login gives it a real logind session so
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# it can take the seat's DRM/input devices.
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SupplementaryGroups=video render input audio tty
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PAMName=login
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TTYPath=/dev/tty1
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StandardInput=tty
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StandardOutput=journal
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StandardError=journal
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# Create /run/mediapi (owned by this user) for the IPC socket the app connects to.
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RuntimeDirectory=mediapi
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# --idle keeps mpv running with no file loaded (holds the playlist between
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# clips and after the last one), so the service stays up and the app can always
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# reach the socket. Playback is hardware-decoded straight on KMS.
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ExecStart=/usr/bin/mpv \
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--idle=yes \
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--input-ipc-server=/run/mediapi/mpv.sock \
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--no-terminal \
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--no-input-default-bindings \
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--fullscreen \
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--force-window=yes \
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--keep-open=no \
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--vo=gpu --gpu-context=drm --hwdec=auto \
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--ao=alsa --audio-device=alsa/hdmi:CARD=vc4hdmi0,DEV=0
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Restart=on-failure
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RestartSec=5
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[Install]
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WantedBy=multi-user.target
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