Hyperwall v10

Fullscreen multi-monitor video wall for Emby media servers. Select displays and libraries in a wizard, and Hyperwall fills each monitor with a grid of hardware-accelerated video cells powered by libmpv.

Features

• Multi-monitor — each monitor gets its own fullscreen window with a configurable grid of video cells (1x1 to 6x6)
• Per-monitor layout — the setup wizard independently assigns each selected display a Wall/Preview role, physical rotation (Auto/0°/90°/180°/ 270°), and rows × columns video grid
• libmpv backend — hardware-accelerated decode via nvdec/d3d11 (NVIDIA Blackwell), 240 Hz G-Sync compatible, HDR hinting
• Emby integration — streams directly from your Emby server with auto-transcode for 4K sources, favorites filtering, and per-cell tag/favorite controls (Jellyfin support is experimental — see Configuration)
• Web remote — built-in dark-mode control page on port 8585 (phone/tablet — no app install needed)
• G-Sync isolation — per-app NVIDIA Profile Inspector profile disables VRR for Hyperwall only, avoiding mixed-FPS jitter

Quick Start (macOS — Apple Silicon / Intel, experimental)

macOS support uses a different video path: mpv's Swift backend does not support --wid window embedding, so each cell renders through the libmpv render API (vo=libmpv) into a QOpenGLWidget — the same architecture as IINA/IPTVnator — with VideoToolbox hardware decode.

# 1. Clone
git clone https://github.com/tcconnally/hyperwall.git
cd hyperwall

# 2. Bootstrap (brew install mpv, creates .venv, installs deps, verifies libmpv)
./bootstrap.sh

# 3. Configure
cp config.example.ini config.ini   # bootstrap does this if missing
open -e config.ini                 # fill in server_url, username, password

# 4. Run
./launch.sh

macOS notes:

• Requires Homebrew; brew install mpv provides libmpv.dylib. launch.sh exports DYLD_FALLBACK_LIBRARY_PATH so python-mpv finds it (must be set before Python starts — don't skip launch.sh).
• Multi-monitor fullscreen works best with System Settings → Desktop & Dock → Displays have separate Spaces enabled (default).
• G-Sync isolation and the .exe build are Windows-only; macOS runs script mode with CoreAudio + VideoToolbox.
• If cells show software decode or black frames, try HYPERWALL_HWDEC=videotoolbox-copy ./launch.sh.

Quick Start (Windows)

# 1. Clone
git clone https://github.com/tcconnally/hyperwall.git
cd hyperwall

# 2. Bootstrap (installs deps, downloads mpv-2.dll, builds exe)
pwsh -ExecutionPolicy Bypass -File .\bootstrap.ps1

# 3. Configure
Copy-Item config.example.ini config.ini
notepad config.ini    # fill in server_url, username, password

# 4. Run
.\launch.bat
# or: python hyperwall.py
# or: .\hyperwall.exe  (recommended — enables G-Sync isolation)

Requirements

• Windows 10/11 with PowerShell 7+ — or — macOS (Apple Silicon/Intel) with Homebrew (experimental)
• Python 3.12+
• NVIDIA GPU with driver 551+ (Windows nvdec hardware decode); Apple Silicon uses VideoToolbox
• Emby server on local network
• NVIDIA Profile Inspector (optional — for G-Sync isolation, Windows only)

Keyboard Shortcuts

Key	Action
C	Toggle controls visibility
Space	Global pause/resume
F	Favorites filter
A	All-items filter
S	mpv stats overlay
Esc	Shutdown

Web Remote API

All endpoints under /api/:

Endpoint	Method	Description
/api/status	GET	Full wall state
/api/pause	POST	Toggle global pause
/api/next/<n>	POST	Next video on cell n
/api/prev/<n>	POST	Previous video on cell n
/api/loop/<n>	POST	Toggle loop on cell n
/api/mute/<n>	POST	Toggle mute on cell n
/api/filter	POST	Set filter (all/favorites)
/api/controls	POST	Toggle controls
/api/shutdown	POST	Shut down wall

Architecture

hyperwall.py → hyperwall/app.py → WallController
                                    ├── SetupWizard (per-monitor role/rotation/grid + library picker)
                                    ├── Per-monitor QMainWindow (fullscreen)
                                    │   └── Grid of VideoCell widgets
                                    │       └── mpv.MPV embedded via wid=
                                    ├── ContentLoader → Emby REST API
                                    ├── web.py (Flask remote on :8585)
                                    └── nvidia.py (G-Sync per-app disable)

Configuration

config.ini (copied from config.example.ini):

[Login]
server_url = http://192.168.1.100:8096
username = your_username
password = your_password

[Settings]
# These are fallback defaults; the wizard stores per-monitor overrides.
last_grid_rows = 2
last_grid_cols = 2
last_display_roles =
last_display_layouts =
cleanup_on_startup = false

Environment variables:

Variable	Effect
HYPERWALL_WEB=1	Enable web remote on port 8585 (off by default)
HYPERWALL_SERVER_URL	Per-launch Emby endpoint override; leaves config.ini unchanged (use for LAN/public A/B)
HYPERWALL_STATS=1	Enable per-cell playback stats
HYPERWALL_HWDEC	Override hardware decoder (nvdec, d3d11va, etc.)
HYPERWALL_RENDER_PROFILE	macOS render tier: hq (default) or explicit low-cost; ignored on Windows/Linux
HYPERWALL_VO	Override video output (gpu-next, gpu)
HYPERWALL_NO_RELAUNCH=1	Skip exe re-launch (script mode)
HYPERWALL_ISOLATED=1	Force G-Sync isolation on (bypass exe-name check)
HYPERWALL_AUTO_TRANSCODE=0	Disable auto-transcode heuristic
HYPERWALL_STABLE_DIRECT_ONLY	Explicit emergency escape: force (1) or disable (0) the fail-closed direct-only pool. It is not auto-enabled; normal playback retains the full library and uses bounded server H.264/AAC transcoding for heavy or unmeasured sources.
HYPERWALL_STABLE_MAX_FPS	Stable-pool frame-rate ceiling (default 30 fps)
HYPERWALL_STABLE_MAX_BITRATE_MBPS	Stable-pool bitrate ceiling (default 20 Mbps)
HYPERWALL_STALL_TIMEOUT_S	Stall watchdog: flag a frozen stream after N s of no progress (default 20)
HYPERWALL_WATCHDOG_MS	Stall watchdog poll interval in ms (default 5000)
HYPERWALL_CRASHLOOP_THRESHOLD	Failures within the window before a cell is parked (default 5)
HYPERWALL_CRASHLOOP_WINDOW_S	Rolling window for the crash-loop guard (default 60)
HYPERWALL_CRASHLOOP_COOLDOWN_S	How long a parked cell waits before resuming (default 120)
HYPERWALL_CACHE_BUDGET_MB	Aggregate demuxer cache ceiling across all cells (default 8192 MiB on Windows/Linux; 2048 MiB on macOS hosts up to 20 GiB RAM)
HYPERWALL_DEMUXER_PER_CELL_MB	Desired per-cell demuxer cache before budget scaling (default 1024 MiB on Windows/Linux; 256 MiB on small macOS hosts)
HYPERWALL_PERFTRACE=1	Emit GUI loop-lag and slow-slot telemetry
HYPERWALL_SOAK_MINUTES	Run a self-terminating randomized soak for N minutes
HYPERWALL_SOAK_PROFILE	Soak mix: mixed (default), audio (mute/unmute focus), or advance
HYPERWALL_SOAK_REPORT_DIR	Write JSONL run events (start/sample/finish) to this directory

macOS performance roadmap

The evidence-led M5 performance plan, capacity gates, and decoder/rendering policy are tracked in docs/performance-roadmap.md. Do not repeat a long 8-cell soak until the roadmap's short profiling and frame-pump gates pass.

For a bounded native profile on macOS, capture the running Hyperwall PID from its startup log, then collect native stacks and privileged task telemetry:

sample <HYPERWALL_PID> 10 3 -file /tmp/hyperwall-sample.txt
sudo powermetrics --samplers tasks,thermal,gpu_power -i 1000 -n 120 \
  > /tmp/hyperwall-powermetrics.txt
python3 scripts/profile-macos-render.py \
  --powermetrics /tmp/hyperwall-powermetrics.txt \
  --sample /tmp/hyperwall-sample.txt \
  --pid <HYPERWALL_PID> \
  --output /tmp/hyperwall-profile.json

The profiler exits nonzero when either capture is missing or incomplete. A permission-denied powermetrics file is incomplete evidence, not a pass. To try the opt-in render tier, launch the same fixed corpus with:

HYPERWALL_RENDER_PROFILE=low-cost ./launch.sh

After converting each bounded run to a normalized profile or analyze_run() JSON report, select the highest passing mode without guessing:

python3 scripts/profile-macos-render.py --matrix \\
  profile-4.json profile-6.json profile-8.json

The command returns BLOCK when required evidence is missing or no mode passes.

macOS playback soak

For the reported mute/unmute jank, use the audio-focused launcher on the M5:

chmod +x soak_wall.sh
./soak_wall.sh 60

The audio-enabled phase is paired with an audio-disabled control by preserving all launch, media, grid, and power settings while disabling the action driver:

HYPERWALL_SOAK_ACTIONS=0 HYPERWALL_SOAK_PROFILE=advance ./soak_wall.sh 10

It runs a 60-minute self-terminating wall session, keeps at most one cell unmuted, and biases actions toward lazy-audio arm/relock transitions. Each run creates soak_reports/<timestamp>/ with hyperwall.log, JSONL events, vm_stat.log, nettop.log, power_sleep.log, and (where permitted) powermetrics.log. The final hyperwall_stats_*.json records VideoToolbox/decode/drop/freeze totals, render callback/paint/render timing, and the final per-cell audio state. Each JSONL sample also carries bounded interval render counters and native drop counter deltas, so startup/transition drops can be separated from steady-state pressure. To test a different hardware-decoder path, run a separate, otherwise identical session, e.g. HYPERWALL_HWDEC=videotoolbox-copy ./soak_wall.sh 60; do not mix profiles in one run.

One-command no-image diagnostics

Run the repository checks, an unauthenticated source-health probe, and a short live phase with offline parsing in one command. Declare the expected total cell count so a saved grid cannot be mislabeled:

python3 scripts/run-soak-diagnostics.py --minutes 10 --expected-cells 8 --decoders no

The runner writes a timestamped directory under soak_reports/, redacts text copies for sharing, and returns nonzero when a measured blocking reliability, cell-count, or completeness gate fails. Non-blocking resource warnings remain reported as WARNING in the summary instead of being promoted to BLOCK. It collects application logs, JSONL soak events, final per-cell stats, vm_stat, nettop, and best-effort powermetrics; it captures no images, screenshots, or video. Use --decoders no to isolate server auto-transcoding from the Mac decoder, or select another decoder for a separate decoder experiment. --expected-cells 4 or --expected-cells 8 blocks a phase if the final stats contain a different number of cells. A source-health failure is reported separately from a client/decoder failure. To run a controlled known-good or malformed-resource decoder phase, pass the exact Emby item ID with --item-id <id>. The selector takes precedence over the broad pool filter, requires exactly one matching item, records the ID in the private phase manifest, and fails closed on a missing or duplicate match. The current checkout still requires one manual SetupWizard acceptance per live phase; the runner prints this notice rather than automating GUI clicks.

The default 10-minute phases are a pilot. Run the full soak only after the pilot is clean:

python3 scripts/run-soak-diagnostics.py --minutes 60 --expected-cells 8 --decoders no

Do not share the raw phase directories: use the *-redacted/ copies because raw media URLs may contain credentials or session identifiers.

Building

pip install pyinstaller
build.bat

Produces hyperwall.exe — a versionless basename. G-Sync isolation is gated on the hyperwall*.exe prefix (or HYPERWALL_ISOLATED=1), so the exe name is stable across version bumps and the NVIDIA profile keeps matching.

Testing

The test suites are pure-logic and dependency-light — no PyQt/mpv/Emby, no pytest. They run headless in CI (.github/workflows/repo-guards.yml) and locally:

python tests/run_all.py

Suite	Covers
run_repo_guards	Package structure + version-drift guard (no hyperwall_v<N> / hardcoded version literals)
test_reliability	Stall watchdog, crash-loop guard, cache-budget scaling, retry→transcode→skip escalation
test_urls	Emby URL construction (incl. load-bearing static=true) + transcode heuristic boundaries
test_config	config.ini save/load round-trip, typed fields, frozen dataclass, scene presets
test_playlist	Multi-source playout: per-group de-dup, refill/reshuffle, group independence
test_scenes	Scene-preset serialization round-trip + malformed-input safety
test_backends	Emby/Jellyfin backend specs: Emby parity, Jellyfin auth-header + verified-live gate

License

MIT