Each generated folder must contain include/mpv/client.h and runtime-manifest.json. Platform runtime/build inputs live under lib/ or bin/. In particular, linux-x64/lib/ contains the pinned, dynamically linked LGPL-compatible libmpv closure used to link the out-of-process frame-copy helper. linux-x64/notices/ contains the generated embedded-mpv-notices.json, THIRD_PARTY_NOTICES.txt, and exact licenses/<package>/** tree. The generated runtime directories are ignored by git; generate, stage, or restore them before building the Electron backend.

Linux package profiles consume that one staged x64 source runtime differently:

DEB/RPM/Pacman remove the private closure and declare the system libmpv dependency.
AppImage/Snap/Flatpak retain the manifest-declared closure under app.asar.unpacked/electron-backend/native/lib/ and flatten the validated notice manifest, aggregate notice, and licenses/** tree beside it.
The strict Snap resolves the helper's remaining graphics interfaces through the external mesa-core22 content provider at $SNAP/graphics; that shared provider is not staged below vendor/embedded-mpv/, bundled into IPTVnator, or included in IPTVnator's source/notices archive.
DEB/RPM/Pacman and marker-only packages do not retain bundled-runtime notices or license files.
Non-x64 Linux packages retain no native artifacts and ship only the unavailable marker.
Electron Builder excludes the staged native tree from app.asar; only afterPack writes the profile-specific unpacked payload, and package verification rejects archived native entries.

The DEB dependency is specifically libmpv2 (verified on Ubuntu 24.04+). Ubuntu 22.04 provides libmpv1; use the x64 AppImage there.

Only iptvnator_mpv_helper may link libmpv. Electron, embedded_mpv.node, and embedded_mpv_frame_reader.node must remain free of direct libmpv dependencies. See tools/embedded-mpv/README.md and docs/architecture/embedded-mpv-native.md.