If you need to play media on different computers at the same frame, you could synchronize them with a timecode.
Indeed, Millumin can handle two kinds of timecode :
- LTC : Linear Timecode is carried via an audio signal
- MTC : Midi Timecode is carried via a MIDI signal
For info, you can generate a LTC audio-file on this website.
Note that some Macintosh does not have a audio input. But you can use an USB audio-card to get your audio signal in. Even cheap devices (less than US$20) will work perfectly for this purpose.
Important : please note that this feature is exclusive to Millumin V3.
1. Getting your Timecode in Millumin
To do so, open the device-panel (CMD+K) and go to the timecode tab :
Then click on the "+" button and choose the kind of timecode you want to get in Millumin :
In the case of a LTC timecode, you need to select from which audio device you receive the timecode, and from which channel. Indeed, audio devices can have multiple channels : for example, if you device is stereo, it have two channels.
In the case of a MTC timecode, you need to select its MIDI source.
2. Synchronize your timecode over different machines
Here is the different parameters you have to configure your timecode :
free wheel : set after how many seconds the media will stop, if he does not receive a timecode anymore.
start time : set at which time your timecode begins. For example, if your timecode begins at 1h, you could need to set the start time at 1h, so your media will start at 0h instead of 1h.
delay : to adjust the delay between the timecode received on this machine and the other machines. This is the parameter that will allow you to synchronize accurately your different machines.
test card : to display a test card displaying the timecode, a blinking circle with a beep to help synchronize your machines.
To synchronize your timecode on your different computers, activate the test card on each one, then, adjust the delay until the circle/beep matches on each machine. For an easier setup, use one computer as a reference, then synchronize each computer regarding this one.
Also, you can take a picture of the different test card to measure the delay of each computer.
Note : the timecode is displayed as "hours : minutes : seconds : frames", but the delay is expressed in milliseconds.
So if your timecode is running at 24 fps, a frame is equal to : 1000/24 = 41,67 milliseconds
For 25 fps : 1000/25 = 40 milliseconds
For 30 fps : 1000/30 = 33,33 milliseconds
3. Using your timecode in Millumin
Once your timecode is correctly adjusted, you can bind it to a timeline :
Or to a movie in the dashboard :
When your timecode is bound to a timeline for example, the time will be synchronized to the timecode. In the example below, Vezer's timeline is sending a MIDI timecode to Millumin's timeline. When jumping in Vezer's timeline, it will do the same in Millumin's one.
Please note that after a a jump in Vezer's timeline, it takes a few milliseconds for the 2 timelines to be resynchronized together.