> For the complete documentation index, see [llms.txt](https://docs.mixeffect.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus.md).

# Mix Effects Bus

- [Auto](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/auto.md): Performs an Auto transition on the selected Mix Effects Bus.
- [Cut](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/cut.md): Performs a Cut transition on the selected Mix Effects Bus.
- [Fade to Black Auto](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/fade-to-black-auto.md): Performs a FTB transition on the selected Mix Effect Bus.
- [Fade to Black Rate](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/fade-to-black-rate.md): Changes the rate of the FTB transition on the selected Mix Effects Bus.
- [Set Preview Input](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/set-preview-input.md): Sets the video source of the preview input on the selected Mix Effect Bus.
- [Set Program Input](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/set-program-input.md): Sets the video source of the program input on the selected Mix Effect Bus.
- [T-Bar](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/t-bar.md): Sets the position of the T-Bar or Fader Bar for the selected MixEffects Bus.
- [T-Bar Adjust](https://docs.mixeffect.app/automate/osc/messages/mix-effects-bus/t-bar-adjust.md): Adjusts the position of the T-Bar or Fader Bar for the selected MixEffects Bus. If you are using this command with Companion, be sure to add a Wait step of at least 50ms in between press actions.