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DOUBLEBOX-PGM.md

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DoubleBox PGM + LED loop + UVC camera

Which source → which Caspar channel: see the canonical OUTPUT_TOPOLOGY.md first. This page is the DoubleBox compose / FILL / wipe detail.

Target look for thematic DoubleBox on PGM (Caspar channel 2), matching the production still (ILU left / CAM right / tema+bug bar / db_loop frame with bg baked in):

┌────────────────────────────────────────────────────────────┐
│  db_loop frame (bg baked in; LED still has bg_loop)        │
│   ┌──────────────────────────┐  ┌────────────┐             │
│   │  ILU 16:9 (layer 116)    │  │  CAM1      │             │
│   │  (above CAM overhang)    │  │  (115 UVC) │             │
│   └──────────────────────────┘  └────────────┘             │
│  ┌────────────────────────────────────┬──────────────────┐ │
│  │  thematic title (l3d-predstavovak) │  360° sekúnd bug │ │
│  └────────────────────────────────────┴──────────────────┘ │
└────────────────────────────────────────────────────────────┘

LED (Caspar channel 1) production rule: headline ILU + loops/bg_loop only. The loop is blueprint baseline on layer 110 (not a RE piece) and must never be displaced by VT/VO/SYN — those play on PGM ClipPlayer2. l3d-predstavovak / l3d-mod / l3d-syn / headline bars are PGM. No intro / znelka on LED. Intro overlay plays on PGM layer 210 (above wipe 200) — see handoffs/blueprints-intro-pgm-layer.md and handoffs/blueprints-baseline-bg-loop.md.

Story ILU on PGM 116: mapping casparcg_pgm_ilu_player → PGM channel 2 layer 116 (piece type doublebox-ilu) sits above CAM (115) so the left window covers CAM overhang without cropping the camera. Headline ILU remains on LED casparcg_ilu_player (1-115).

Camera / UVC: studio casparcg.hypercomposed.pgmCameraProducer (e.g. dshow://video=OBS Virtual Camera):

  • Headlines / post-intro MOD → PGM 2-115 fullscreen (FILL 0 0 1 1)
  • DoubleBox → PGM 2-115 under ILU (116) and db_loop (118), ~80% width, right edge stuck to the screen right (FILL 0.2 0.1 0.8 0.8). ILU covers CAM left overhang — no CAM cover-crop.

db_loop is WithinPart on DoubleBox Takes only (not Intro) so SYN / weather stay fullscreen. Production file may be named dp_loop.mov — place/symlink as loops/db_loop.

Story ILU piece: use piece type doublebox-ilu (part preset doublebox) — not headline. doublebox-ilu plays the clip on PGM 2-116 with DoubleBox left FILL

  • center cover-crop and no gfx/headline-fallback chrome. Headline ILU stays on LED for the opening block only.

Getting CAM into Caspar (OBS Virtual Camera → UVC)

Yes. Caspar can PLAY a webcam/UVC device as a media producer on the PGM channel.

Recommended path (clean CAM into the right box)

  1. OBS (or any cam app) exposes OBS Virtual Camera (or another UVC device) with the moderator feed (no need to bake the LED into OBS if Caspar does DoubleBox).
  2. On the Caspar host (Windows), confirm the device name, e.g. in PowerShell / GraphEdit, or try AMCP:
PLAY 2-115 "dshow://video=OBS Virtual Camera"
MIXER 2-115 FILL 0.2 0.1 0.8 0.8
  1. Sofie studio config (blueprints) can store that producer string and, on camera pieces, PLAY it on PGM camera layer 115 with the DoubleBox FILL (see below).

Device string is machine-local — set it in studio config, do not hardcode in rundowns.

OBS “finished look” shortcut

If you want a quick preview before Sofie owns the full compose:

  1. Caspar ch1 Screen/NDI → OBS (LED = bg_loop).
  2. OBS stacks mod footage on top → Start Virtual Camera.
  3. Caspar ch2 PLAYs that UVC as a base layer; Sofie still overlays PGM wipe / tema / ILU as they land.

Prefer the recommended path for production; the shortcut is fine for lighting/look checks.

FILL geometry (starting point — tune to graphics)

Region Layer (PGM ch2) FILL x y xScale yScale
Story VT / weather 110 full frame (no FILL) — not baseline bg_loop
CAM1 UVC (DoubleBox) 115 0.2 0.1 0.8 0.8 (under ILU + db_loop)
ILU 116 0.0219 0.0769 0.6802 0.6824 (above CAM)
CAM1 UVC (headlines/MOD) 115 0 0 1 1 fullscreen
db_loop frame 118 full frame alpha cutouts
topic L3D + bug 121 / 123 HTML templates (bottom bar)
Wipe 200 full frame alpha wipe
Intro / outro 210 full frame — above wipe + compose; PGM only

Tune FILL against the real HTML chrome; values above match the attached still approximately.

Cutouts / DoubleBox frame media: you do not need a black/white matte. Soft compose is db_loop full-frame on PGM 118 + MIXER FILL for ILU/CAM windows (115/116). If design needs a branded frame (borders/shadows between windows), use a full-frame PNG or ProRes/Hap alpha .mov with transparent holes — not a luma mask (this stack is not wired for luma key). That chrome is db_loop on 118 (or bake it into HTML); do not put a background loop on PGM 110.

Wipes (same media, different semantics)

Story-block transitions use alpha wipe files under Caspar media, default wipes/wipe (plus wipe_sjv / wipe_sport / wipe_pocasie where labelled). Sofie plays them on PGM layer 200 as a short overlay on Take into that part (not a vision-mixer cut). Empty/0 RE duration defaults to ~2.5s so layer 200 does not cover the rest of the part after the wipe finishes.

If wipes never appear: (1) watch Caspar channel 2, not LED; (2) confirm PLAY 2-200 "wipes/wipe" on Take (else 404 → file missing on disk); (3) re-upload blueprints + Apply studio config so casparcg_effects_player_pgm exists.

The label records direction (file may still be the default wipe):

Label Meaning
BLANK No wipe (HOLD / cold open)
Headline 1..3 Into headline ILUs
Intro Into intro overlay
Double Box Into thematic DoubleBox (ILU+CAM+tema)
ILU TO SYN / SYN TO ILU DoubleBox ↔ full SYN videoclip
ILU TO SYN CLUSTER Into a SYN cluster after DoubleBox
SYN TO ILU TEMA / ILU TO ILU TEMA Into DoubleBox / tema-framed ILU
SYN TO SYN SYN → SYN
Spravy JV / Spravy JV NEXT SJV block
Sport / Sport NEXT Šport block
Pocasie / Zaver / OUTRO Closing sequence

Smoke rundown pieces use piece type wipe with fileName: wipes/wipe (or a labelled variant) and transition: <label> for operators.

Blueprint / mapping notes

Sofie mapping id Channel Layer Role
casparcg_clip_player1 LED 1 110 LED bg_loop
casparcg_clip_player2 PGM 2 110 Story VT / weather (no baseline bg_loop)
casparcg_ilu_player LED 1 115 Headline ILU MEDIA (+ gfx/headline-fallback)
casparcg_pgm_camera PGM 2 115 UVC / CAM1 (FILL; under ILU on DoubleBox)
casparcg_pgm_ilu_player PGM 2 116 Thematic DoubleBox left ILU (doublebox-ilu)
casparcg_intro_player_pgm PGM 2 210 Intro / znelka — never LED
casparcg_graphics_pgm_l3d PGM 2 121 l3d-predstavovak / l3d-odporucanie / l3d-syn / headline bars
casparcg_graphics_logo PGM 2 123 gfx/logo-bug (360° sekúnd bug) — not on LED
casparcg_effects_player_pgm PGM 2 200 Wipes

Headline / story ILU on LED vs PGM: opening headline ILU stays on LED (casparcg_ilu_player). Thematic DoubleBox left-window media uses casparcg_pgm_ilu_player on PGM channel 2 layer 116 via piece type doublebox-ilu. PGM also carries camera FILL + l3d-predstavovak. Baseline bg_loop is LED-only. The logo-bug is PGM-only.

bg-loop folder structure

<casparcgMediaFolder>/loops/bg_loop.<ext>

Piece payload: { "fileName": "loops/bg_loop" } (Caspar PLAY omits extension). RE piece type bg-loop uses mediaPick subdir loops so the picker opens that folder; the stored path still includes loops/…. Blueprints baseline must use the same basename (see handoffs/blueprints-baseline-bg-loop.md).

Smoke checklist

  1. Put wipe file at sofie-demo-media/wipes/wipe.* (and optional wipe_sjv / wipe_sport / wipe_pocasie) and Intro disk asset at sofie-demo-media/assets/intro_michal.mov (PLAY path assets/intro_michal)
  2. Confirm OBS Virtual Camera name; test PLAY 2-115 "dshow://…" by hand
  3. Import megarepo assets/spravy-v3-smoke-rundown.json (includes story-block wipe pieces)
  4. Watch Caspar channel 2 for wipes + DoubleBox + Intro
  5. Activate (Rehearsal): LED shows PLAY 1-110 "loops/bg_loop"; PGM must not play bg_loop on ClipPlayer2.
  6. Intro on PGM 210 only: Intro take must show PLAY <pgm>-210 "assets/intro_michal" and must not play Intro on LED (1-200).
  7. Post-intro MOD: PLAY <pgm>-115 "dshow://…" fullscreen — not bg_loop on PGM.
  8. Story ILU on PGM 116 above CAM: DoubleBox Take must show PLAY <pgm>-116 "clips/…" and CAM on 115 (ILU z-order above CAM). Headline parts still use LED 1-115.