Timecode In

Settings → Timecode In has two sub-tabs: Chase and TC Bridge. Chase makes LTCast follow an external timecode source. TC Bridge forwards incoming timecode to LTCast's MTC, Art-Net and OSC outputs. Chase is free. TC Bridge sends timecode out, so it is a Pro feature: without Pro (an active trial counts) its controls are dimmed and an Upgrade link appears at the top of its tab.

The audio input that carries the external LTC is chosen in Settings → Devices → LTC Input Device, not here. When none is chosen, an amber link at the top of the tab takes you to Devices.

Chase sub-tab

Chase makes the timecode display, playhead, setlist song and cues follow the external clock; it does not re-broadcast that clock. See Chasing external LTC for how it works. The controls:

• Enable chase mode — the master switch. The CHASE pill in the status bar and Ctrl+Shift+C do the same.
• Output audio while chasing — plays the matched song's audio in step with the external clock. Off by default (🔇 MIDI only in the status bar), so you get the display and the cues but no music.
• Keep running when LTC stops — Freewheel: the chase clock keeps counting on the computer's clock when the signal drops. Off by default.
  • Run past the end of the song — lets the freewheel clock count beyond the end of the playing song. Available only with Freewheel on; off by default. See Freewheel mode.
• Art-Net Network Input — also follows Art-Net timecode arriving on UDP port 6454, for example from another LTCast. Art-Net Input Offset (frames) shifts the received time by −99 to +99 frames; positive is later. See Chase from Art-Net.
• Status — shows Idle, Chasing, Freewheeling or Lost.

TC Bridge sub-tab

TC Bridge sends each incoming timecode frame on to the outputs you choose, as it arrives, whether or not chase is on and without playing any file. See TC Bridge. The controls:

• Enable TC Bridge mode — the master switch, off by default.
• Forward to MTC output, Forward to Art-Net output and Forward to OSC /timecode — which outputs receive the bridged timecode. They stay clickable while the bridge is on; they are greyed out only while the master switch is off.

The bridge does not set those outputs up for you. When a forward is ticked but its output is not ready, an amber hint appears beside it — Select an MTC port first, Enable Art-Net output first, Enable OSC output first — and clicking it jumps to the page where you fix it. Two reminders sit at the bottom of the tab: the bridge is muted while a local song is playing, and it simply stops when the incoming signal drops, with no last-value repeat.