Author Topic: Auto Start/Stop recording on loud sound  (Read 765 times)

Killernoy

  • New to the forum
  • *
  • Posts: 5
Auto Start/Stop recording on loud sound
« on: July 02, 2022, 04:41:30 PM »
I have a EOS M and a Tascam DR-70D Audio Recorder whitch has a slate function aka a loud beep to better sync audio in post.

My qustion now is could i use that loud sound in order to automaticly start and stop the recording?

Why do i want to do this?
I have multiple cameras that are circled around what i am filming and i would like to use wireless audio to start/stop the cameras simoultaniosly.

yourboylloyd

  • Contributor
  • Senior
  • *****
  • Posts: 310
Re: Auto Start/Stop recording on loud sound
« Reply #1 on: July 02, 2022, 07:12:41 PM »
If you use Plural Eyes by red giant then you wouldn't have to worry about that. I would be concerned a little because the recording time on some Canon cameras can vary in when to start when record is triggered.
Join the ML discord! https://discord.gg/H7h6rfq

Killernoy

  • New to the forum
  • *
  • Posts: 5
Re: Auto Start/Stop recording on loud sound
« Reply #2 on: July 02, 2022, 11:00:59 PM »
I think i didnt Marke it clear enough.
I do know how to sync my camera and sound.
What i want is to Start multiple cameras with sound because i recorde a stage and want to have every angle covert from the Start of the performance which is why i cant walk around to start every camera.

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 8335
Re: Auto Start/Stop recording on loud sound
« Reply #3 on: July 03, 2022, 06:30:34 PM »
Unfortunately there is no out-of-the-box solution to get there.

- ML has an "Audio Remote Shot" feature able to take a pic but it works in photo mode only.
- ML can assign record button to remote control units but is using "half-shutter" focus button.

You should be able to tweak the code and build an own version where Audio Remote Shot triggers record button/half-shutter instead. Requires a building environment + some diving lessons into ML code.

Caveat: Audio Remote Shot will react to any loud noise.
You may be better off to use some IR remote control device instead.

Killernoy

  • New to the forum
  • *
  • Posts: 5
Re: Auto Start/Stop recording on loud sound
« Reply #4 on: July 10, 2022, 06:21:30 AM »
You may be better off to use some IR remote control device instead.
I took your advice and build a Device to turn my slate signal into the needed IR Remote Signal.
I also made a Post about it in the Hardware and Accessories section
www.magiclantern.fm/forum/index.php?topic=26557