Bitwig Studio on a separate computer via MTC & MMC
Introduction
The following explanation and screenshots are related to Bitwig Studio version 4.2.3, but the steps will be similar for other versions.
The easiest way to provide Video Sync with incoming MTC/MMC data from another computer, is to setup a network MIDI connection using Apple’s built-in Audio MIDI Setup tool to transmit all the MIDI data between the two computers. It is usually not necessary to buy a separate MIDI interface and cables to connect the MTC sending and receiving computers, although a cabled MIDI connection can be used if preferable. Since MIDI was developed in the 80s, it has a really low data rate. Therefore it should not be a problem to use network MIDI in a Wi-Fi environment.
A cabled ethernet network connection is the preferred method for reliability.
The following instructions assume that you have two Apple Macs: one with Video Sync; the other with Bitwig Studio.
Although not listed as a separate DAW Sync Setup Option, this Network MIDI setup incidentally also works flawlessly with Video Sync on the same computer.
If the Bitwig Studio computer is a PC, rtpMIDI is a free PC equivalent to Apple’s network MIDI implementation. Download & setup instructions can be found here: http://www.tobias-erichsen.de/software/rtpmidi.html
Our thanks to Tobias Erichsen for this invaluable tool.
Configuring Audio MIDI Setup on the Bitwig Studio computer to send MTC & MMC over the Network
On the Bitwig Studio computer, go to Applications > Utilities & open Audio MIDI Setup. The MIDI Network Setup window should appear:
If the window is not shown, select Window > Show MIDI Studio & then from the MIDI Studio menu that appears, select Open MIDI Network Setup.
In older versions of Audio MIDI Setup where this option is not present, it can accessed by double-clicking the Network device icon in the default MIDI Studio window.
In the My Sessions field top left, create a new session by clicking +.
Click the checkbox to the left of the name to enable the session.
Rename it (computer 1 name) MTC/MMC Send (or something similar) - e.g. MacProHDX MTC/MMC Send This name will automatically be copied to the Local name field.
The Local name is the name that appears on this local computer.
Copy this name & paste it in the Bonjour name field.
The Bonjour name is the name that is displayed on the other computers in the network.
Although a session can be used in either input or output directions, to avoid confusion it is recommended to stick to one direction by noting this in the session name, e.g. Send or Out.
MTC & MMC do not require separate Network sessions made for each - they can share the same session.
Set the Port: field to 5004.
Select Anyone in the Who may connect to me dropbox on the bottom left.
Configuration is complete for the Bitwig Studio computer. This should not need to be set up again in future.
Configuring Audio MIDI Setup on the Video Sync computer to receive Network MTC & MMC
On the Video Sync computer, close Video Sync & open Audio MIDI Setup. Open the MIDI Network Setup window as described above. The Bitwig Studio computer should be visible in the Directory field - showing (computer 1 name) MTC/MMC Send with a green active circle to the left.
In the My Sessions field top left, create a new session by clicking +.
Click the checkbox to the left of the name to enable the session.
Rename it (computer 2 name) MTC/MMC Receive (or something very similar)- eg MacbookPro MTC/MMC Receive.
This name will automatically be copied to the Local name field.
Copy this name & paste it in the Bonjour name field.
Set the Port: field to 5006.
Select Anyone in the Who may connect to me: selection field on the bottom left.
Connecting the Network MTC/MMC Sessions
Now that the two Sessions have been created, the next step is to connect them.
The steps until this point should not need to be done again in future. The following simple steps to connect only need to be done once every time the computers are restarted.
With the (computer 2 name) MTC/MMC Receive session selected in the My Sessions box, select (computer 1 name) MTC/MMC Send in the Directory field, and hit the Connect button.
(computer 1 name) MTC/MMC Send should now appear in the Participants: field on the right.
Regardless of which computer is chosen to Connect, only one of the computers needs to connect to establish the connection.
On the Bitwig Studio computer, (computer 2 name) MTC/MMC Receive should now also be seen in the Participants: window.
If the (computer 2 name) MTC/MMC Receive session does not show up in the Directory list, try re-launch Audio-MIDI-Setup.
Launch Video Sync.
If Video Sync was open already, use the “Rescan Available MIDI Ports” button in the SYNC preferences.
In Video Sync, go to the SYNC tab in Preferences & set the Sync Method field to MIDI.
Next, select Network (computer 2 name) MTC/MMC Receive in both the MTC In & MMC In fields, as per the image below:
Bitwig Studio Network MTC (MIDI Timecode) Setup
Click the Bitwig icon to open the Settings, & select the Synchronization tab on the left.
Under the MIDI Sync (OUT) Section, enable the MTC box in the Network (computer 2 name) MTC/MMC Receive row (in our example named Network Macbook MTC/MMC Receive).
Match the frame-rate in the MTC Rate field, to the Timeline timecode rate in Video Sync.
There is currently no way to set the start timecode of the session in Bitwig, as the first bar will always correspond to 00:00:00:00. So to ensure in sync playback, Video Sync must se set to 00:00:00:00.
Bitwig Studio Network MMC (MIDI Machine Control) Setup
There is no need to set up MMC separately with Bitwig Studio, as it sends MMC style positioning information using a bespoke implementation of MIDI Timecode (MTC).
Enabling Synchronised playback
The incoming timecode and the timecode rate should now be seen incrementing in the SYNC tab of the Preferences window when hitting play or scrubbing within Bitwig Studio.
Video Sync MTC/MMC sync is now online & ready to go. Hit play in Bitwig Studio and Video Sync will play back in sync.
Dealing with MTC sync with high frame rate content
Video Sync allows for synchronised playback of clips running at up to 60 frames per second. Being a standard from the 80s, MIDI timecode (MTC) does not support frame rates higher than 30 frames per second. To be able to play timelines with these high frame rate clips in sync to MTC, Video Sync will try to match the incoming TC at half the frame rate. For example, if the timeline has a 50fps clip, Video Sync will play it in sync if a 25fps MTC source is supplied.
In the timeline list, the timeline frame rate is shown here:
