Song Position Control / Scrub The Arrangement
We have been asked this a few times via email (and on the forum),
Thought I would start a thread for it as it’s now possible with Reactions v2.
So the question is, how can I scrub through the arrangement view / control the arrangement playhead with a knob style control.
You can use ‘song > set current song time’ Then select ‘get value from ranges’ for controlling it with a range style control i.e. a knob.
Import and and use the attached script: scrub_the_arrangement_playhead.json (contains 1 reaction).
In the reaction, make sure to select the correct listener i.e. knob 1
Then in the action, for ‘current input value’, make sure you select the listener’s latest velocity value (i.e. knob 1’s latest velocity value).
If you want to extend how far/ the range of the playhead, increase the ‘output max’ number.
As has been pointed out to me (via an email), the above script isn’t really scrubbing as it doesn’t start from the current song time. So attached is a version 2 which does start from the current song time.
In this version the Reaction contains 2 Action Blocks.
You will need to change the condition in each action block so it uses your midi control for:
knob 2’s latest velocity value (midi controller > current velocity value > …)
knob 2’s previous velocity value (midi controller > previous velocity value > …)
Remember to do this for both Action blocks AND that its the correct knob on your controller template.
Both actions are set to increase/decrease the scrub position by 2.0 (which is half a bar if I’m thinking correcctly). You can change this amount by simply changing these values in each action.
On a separate note, you can use this reaction to easily create knob based functionality where turning left performs one function, and turning right performs another – they can be related (as in this, right = increasing the ‘scub by’ value by 2.0, left = decreases it by 2.0
Is it still working? Nothing happen in Ableton Live and Reaction have errors like that. What can I do?
Thank you for your time!
I rebuilt it, and it started working.
However, I’ve encountered another strange behavior — I’m not sure why, but when using “endless encoder” as a listener, it doesn’t work at all. But when I used a “knob” linked to the physical endless encoder on my MIDI controller (Midifighter Twister), it started working properly.
Endless encoders use the ‘relative’ setting by default where as knobs use ‘absolute’.
The condition in your screenshot above requires the values to be going up as you turn the knob/encoder.
Absolute controls use a range of values from 0-127 as you turn them.
Relative usually only have a single value when turning left and another value when turning right.
This knowledge base article explains how to scrub the arrangement playhead:
https://community.remotify.io/knowledge/how-to-scrub-the-arrangement-playhead/
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As is stated in the messages. Re-select the options to get the latest code as there has been an update to them since the script was created.