> For the complete documentation index, see [llms.txt](https://support.4cast.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.4cast.world/5.-triggering/triggering-overview.md). # Triggering Overview The MVP supports multiple ways to trigger video and lighting clips. You can use any combination of these methods simultaneously -- the last trigger received wins. *** ## Trigger Methods at a Glance | Method | Input | Video Clips | Lighting Clips | Clip Range | | ---------------- | ------------------------- | --------------------------- | ------------------------------ | --------------------- | | **MIDI Notes** | USB, DIN, or Network MIDI | Note 0-99 on video channel | Note 0-99 on lighting channel | 0-99 | | **MIDI CC #110** | USB, DIN, or Network MIDI | Value 1-99 on video channel | Value 1-99 on lighting channel | 1-99 + blackout (100) | | **USB Keyboard** | USB-A keyboard/keypad | Keys 1-0, Q-P, A-L, Z-M | Shift + same keys | 1-36 | | **Timecode** | LTC audio or MTC MIDI | Timeline-driven | Timeline-driven | Full show | *** ## MIDI Note Triggering The most common method. Your DAW, controller, or show system sends a MIDI note on the configured channel. | Note | Action | | -------------- | --------------------------------------------------------------------------------- | | **Note 0** | Blackout (video goes black / DMX all channels to 0) | | **Notes 1-99** | Trigger the clip assigned to that note number | | **Note 101** | **Previous** -- step back to the previous non-empty assignment in the active slot | | **Note 102** | **Next** -- step forward to the next non-empty assignment in the active slot | **Key details:** * The **video MIDI channel** (default: 1) and **lighting MIDI channel** (default: 3) are configurable in their respective settings pages * **Note On** starts playback; note duration is irrelevant * Stopping your DAW does **not** stop the MVP -- send Note 0 (blackout) to explicitly stop playback > *DAW-specific setup:* [*Ableton*](/5.-triggering/daw-computer-triggering/ableton-live-setup.md) *|* [*Pro Tools*](/5.-triggering/daw-computer-triggering/pro-tools-setup.md) *|* [*Logic Pro*](/5.-triggering/daw-computer-triggering/logic-pro-setup.md) *|* [*Other DAWs*](/5.-triggering/daw-computer-triggering/other-daws-general-guide.md) *** ## MIDI Transport (Prev / Next) Two hardcoded notes step through the assignments in the currently active configuration slot. * **Note 101** = Previous, **Note 102** = Next * Sent on the **video channel** they step video; on the **lighting channel** they step lighting * Empty assignments are skipped; stepping wraps within the active slot and never crosses into another slot * Debounced at 300 ms per direction to absorb double-triggers from hardware pads * Always active -- there is nothing to enable > *Details:* [*MIDI Transport (Prev / Next)*](/5.-triggering/midi-transport-prev-next.md) *** ## MIDI CC Trigger Mode An alternative to note triggering is using Control Change messages. * Uses **CC #110** * Values 1-99 = trigger clip, value 100 = blackout * Must be enabled in [System Settings](/6.-configuration/system-settings.md) > *Details:* [*MIDI CC Trigger Mode*](/5.-triggering/midi-cc-trigger-mode.md) *** ## USB Keyboard Triggering Any USB keyboard or numeric keypad connected to the MVP's USB-A ports can trigger clips. * Number row (1-0) = clips 1-10 * QWERTY rows = clips 11-36 * **Shift** + key = lighting clips Always enabled, no configuration needed. > *Details:* [*USB Keyboard Triggering*](/5.-triggering/usb-keyboards-hid.md) *** ## Timecode Playback For timeline-based show playback synced to SMPTE timecode. * **LTC**: Audio timecode via 3.5mm input * **MTC**: MIDI timecode via USB, DIN, or Network MIDI * Supports continuous sync, variable speed, and transport control (MMC) When timecode is active, manual triggers (MIDI notes, keyboard, CC) are suppressed. > *Details:* [*Timecode Overview*](/4.-timecode-setup/timecode-overview.md) *|* [*Timeline Editor*](/4.-timecode-setup/the-timeline-editor.md) *** ## Hardware Controllers MIDI controllers (USB or 5-pin DIN) can trigger clips directly without a DAW. * Any class-compliant MIDI device works * Multiple controllers can be connected simultaneously > *Details:* [*Hardware Controller Setup*](/5.-triggering/hardware-controllers.md) *** ## Network MIDI (RTP-MIDI) Send MIDI triggers wirelessly over Ethernet or Wi-Fi using the RTP-MIDI protocol. * Works on Mac natively (Audio MIDI Setup) * Works on Windows via free rtpMIDI app * The MVP advertises as "MVP" on the network > *Details:* [*Network MIDI (RTP-MIDI) Setup*](/5.-triggering/network-midi-rtp-midi-setup.md) *** ## Wiring Diagrams Depending on your production needs, your setup will look like one of the following diagrams: **Scenario A: Video Playback Only** * Signal Chain: Computer → MVP → HDMI Display
**Scenario B: Lighting Playback Only** * Signal Chain: Computer → MVP → Ethernet → ArtNet Node → DMX Fixtures
**Scenario C: Video + Lighting Playback** * Signal Chain: Computer → MVP → HDMI & Ethernet
### Scenario D: Standalone (No Computer) * Signal Chain: MIDI Controller → MVP → HDMI & Ethernet
*** ## Trigger Priority and Interaction * **All methods are active simultaneously** -- MIDI notes, CC, keyboard, and timecode can all be connected at once * **Last trigger wins** -- if two triggers arrive at the same time, the most recent one takes effect * **Timecode overrides manual triggers** -- when timecode is actively driving playback, manual triggers (MIDI notes, keyboard, CC) are suppressed to prevent conflicts * **When timecode stops**, manual triggers resume automatically * **Autoplay is not a trigger method** -- when enabled it advances at the end of each clip, and manual triggers (including Prev/Next) simply move the playhead without switching it off. See [Autoplay](/6.-configuration/autoplay.md). *** ## Slot Switching During Performance You can switch between configuration slots (A-E) during a live show using **MIDI CC #119**: | CC #119 Value | Slot | | ------------- | ------ | | 10 | Slot A | | 20 | Slot B | | 30 | Slot C | | 40 | Slot D | | 50 | Slot E | Video and lighting slots switch independently -- send CC #119 on the video channel to switch video slots, or on the lighting channel for lighting slots. > *Details:* [*Configuration Slots (A-E)*](/6.-configuration/configuration-slots.md) *** ## Related Pages * [Video Configuration](/2.-video-setup/video-configuration.md) -- Assign video clips * [Lighting Configuration](/3.-lighting-setup/lighting-configuration.md) -- Assign DMX clips * [MIDI Reference](/8.-reference/midi-reference.md) -- Complete CC and note reference card * [The MVP Dashboard](/1.-getting-started/the-mvp-dashboard.md) -- Monitor triggers in real time * [MIDI Transport (Prev / Next)](/5.-triggering/midi-transport-prev-next.md) -- Notes 101/102 step through the active slot * [Autoplay](/6.-configuration/autoplay.md) -- Automatic advance at end of clip