The WeaveSignal contributors
466b32ab6a
The first public release. What it does: https://weavesignal.top; what changed: CHANGELOG.md.
135 lines
5.8 KiB
TOML
135 lines
5.8 KiB
TOML
# SPDX-License-Identifier: AGPL-3.0-only
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# SPDX-FileCopyrightText: 2026 The WeaveSignal contributors
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# WeaveSignal desk settings. LiveKit's API secret comes from WEAVESIGNAL_LIVEKIT_API_SECRET.
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# The desk finds the people in the room itself: each joins with a token from the control
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# plane that carries their role (presenter, dj, guest, caller, screener or producer).
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[livekit]
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url = "ws://127.0.0.1:7880" # ports.livekit_http, on the server
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api_key = "devkey"
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room = "studio"
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[desk]
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identity = "desk" # the desk's identities: desk-in-<person>-<n>, desk-mm-<person>
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jitter_buffer_ms = 50 # measured in spike 01; LiveKit's 200 ms default doubles a guest's delay
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mix_buffer_ms = 20 # one mixing pass per block for every bus; one Opus frame (10 or 20)
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input_prebuffer_ms = 50 # the longest the mix waits for a late voice before going without it
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workers = 0 # threads encoding the returns; 0: one per core, at most four
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realtime = true # ask for real-time scheduling for the mix and the encoders
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return_opus_bitrate = 128000
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[programme]
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srt_bind = "127.0.0.1" # the desk listens for Liquidsoap here; loopback only (ADR-0049)
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srt_port = 7313 # ports.srt_ingest
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srt_latency_ms = 20
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opus_bitrate = 96000
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queue_ms = 500
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# The profanity delay toward playout; Dump empties it and it builds back up (slower playback
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# through pauses, a few per cent slow otherwise). 0 turns it off.
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[programme.delay]
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target_ms = 8000
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quiet_db = -50.0
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rebuild_slowdown = 0.02
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# The limiter on the programme and on every mix-minus.
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[programme.limiter]
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ceiling_db = -1.0
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lookahead_ms = 1.5
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release_ms = 120.0
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[room]
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api_url = "" # LiveKit's server API; empty: livekit.url with ws turned into http
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poll_ms = 500
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leave_grace_ms = 30000 # a person who left keeps their mix-minus this long
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link_timeout_ms = 8000 # a subscription with no audio by then is made again
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[control]
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socket = "/run/weavesignal/desk.sock" # on air, talkback, carts, status; leave out to turn it off
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# The cart wall's players: eight for one-shots and sweepers, two for beds (ADR-0117).
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[carts]
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dir = "/var/lib/weavesignal/carts" # the media worker's FLAC files (control plane: carts.media_dir)
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ahead_ms = 1000 # decoded ahead of each sounding cart; a bed loops inside it
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start_wait_ms = 500 # the longest a fire waits for a cart's first audio
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# Each role's input chain. Presenters and DJs default to this one (the spike's live run);
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# other roles have none. An empty table turns a role's processing off.
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[inputs.presenter]
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makeup_db = 5.6
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# First in the chain: below -34 dBFS (the presenter not speaking) the microphone is turned
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# down, so the guests' voices leaking from the presenter's headphones stay out of the
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# programme (the second live run heard them come back 0.3 s late).
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[inputs.presenter.expander]
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threshold_db = -34.0
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ratio = 3.0 # 1:3 below the threshold
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knee_db = 6.0
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range_db = 18.0 # never more than 18 dB down
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attack_ms = 1.0
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release_ms = 150.0
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[inputs.presenter.compressor]
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threshold_db = -14.0
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ratio = 2.5
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knee_db = 6.0
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attack_ms = 5.0
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release_ms = 120.0
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[inputs.presenter.leveller] # steers the gain slowly toward the guests' speech level
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target_db = -25.0
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gate_db = -38.0
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min_db = -6.0
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max_db = 18.0
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step_db = 0.5
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[inputs.presenter.limiter]
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ceiling_db = -1.0
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lookahead_ms = 1.5
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release_ms = 120.0
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# The video path (ADR-0009): off by default. Cameras in the room are cut to as they speak (the
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# vision mixer follows the audio); with nobody on air on camera, the slate. The picture goes
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# through the profanity delay with the sound, is encoded AV1 and written as CMAF HLS for the
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# player; the live picture goes back into the room for the people on the show (ADR-0028).
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[video]
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enabled = false
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encoder = "auto" # auto: NVENC if this machine has it, else SVT-AV1 on the CPU
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rungs = ["480p20"] # ADR-0027; lower: "360p20", "240p15" (best first)
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nvenc_sessions = 12 # GeForce: 12 per machine, shared with everything else
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camera_codecs = ["VP8", "AV1", "VP9"]
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lag_ms = 100 # a frame is composed this far behind the clock
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stale_ms = 1000 # a camera without a new picture this long counts as off
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lower_third_ms = 6000 # the name under a person cut to; 0: none
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station = "WeaveSignal" # on the slate until now-playing arrives
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still_file = "/var/lib/weavesignal/carts/stills/slate.png" # the slate's picture, watched; the control plane writes it
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[video.switch]
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speaking_lufs = -45.0 # louder than this, a voice is speaking
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margin_db = 3.0 # a new speaker must be this much louder than the shot
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switch_after_ms = 600 # for this long
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min_shot_ms = 2000 # the shortest shot
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[video.hls]
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dir = "/var/lib/weavesignal/hls" # the control plane serves it at /hls/
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segment_ms = 2000
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playlist_segments = 6
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keep_segments = 12
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opus_bitrate = 96000
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[video.room]
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publish = true # the live programme picture into the room, VP8
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thumbnails = true # with the other cameras along the bottom
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# Playout's output back to the desk (ADR-0172): the video stream's sound is the desk's delayed
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# programme while someone is on air, and what listeners hear from playout otherwise. Playout
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# sends it as PCM in WAV over loopback (Icecast's source protocol), with the listener process's
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# source password in WEAVESIGNAL_PLAYOUT_FEED_PASSWORD; the desk listens.
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[video.playout_feed]
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enabled = true
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bind = "127.0.0.1"
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port = 7317 # ports.desk_feed (ADR-0075)
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cushion_ms = 200 # the feed is placed this far ahead of the mixing pass
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crossfade_ms = 300 # each switch between the desk and the feed
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off_air_hold_ms = 3000 # the desk stays this long after the last person goes off air
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absent_ms = 500 # no feed for this long: the desk's programme instead
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