Timecode In
Settings β Timecode In has two sub-tabs: Chase and TC Bridge. Chase mode makes LTCast follow an external LTC source. TC Bridge mode forwards an incoming timecode signal to LTCast's protocol outputs without playback.
Chase sub-tab
Enable Chase Mode with the toggle at the top of the sub-tab. When active, LTCast listens on the LTC Input Device for an incoming LTC signal and locks playback position to it in real time.
- LTC Input Device β the audio input carrying external LTC (set in Settings β Devices)
- Channel β Auto (LTCast detects which channel carries LTC) or a specific channel number
- Output audio while chasing β plays the local song audio alongside the chased LTC; off by default to avoid double-audio in multi-machine setups
- Freewheel β Keep running when LTC stops: continues counting internally if the LTC signal drops for a short period; Run past end of song: allows the position to advance beyond the loaded audio without stopping
- Art-Net Network Input β enable to receive Art-Net timecode (OpTimeCode) from another LTCast machine instead of audio LTC; Art-Net Input Offset compensates for network latency
TC Bridge sub-tab
TC Bridge receives timecode from an external source and forwards it to LTCast's outputs without controlling local playback. Use this to re-broadcast an incoming LTC signal as MTC, Art-Net, or OSC.
Enable TC Bridge Mode with the toggle. Then enable any combination of forward destinations:
- Forward to MTC output β forwards the incoming timecode as MTC quarter-frame messages; disabled if no MIDI port is selected in Devices
- Forward to Art-Net output β forwards as Art-Net OpTimeCode packets; disabled if Art-Net is not configured in Outputs
- Forward to OSC /timecode β forwards as OSC messages; disabled if OSC is not configured in Outputs
Status hints next to each toggle explain what configuration step is needed if the destination is not yet active.