Specifications

Chapter 35: Working with Synchronization 553
Session Start
Use this field to specify a SMPTE start frame lo-
cation for your session. See “Setting a SMPTE
Session Start Time (Start Frame)” on page 557.
Incoming Time (Current Time)
This display indicates incoming time code.
Timecode Rate
This menu lets you set the SMPTE timecode rate
for the current session. In Pro Tools 6.4, this
menu is labeled Timecode Rate. In Pro Tools 6.2
and below, this menu is labeled Frame Rate.
Feet+Frames Rate
This menu lets you set a specific feet+frames rate
for the current session. This rate can be a differ-
ent fps rate than the timecode rate.
SYNC Setup Settings
The controls in the SYNC Setup section let you
configure SYNC I/O settings, including clock
reference, positional reference, video format,
and VSO.
These controls are grouped in the Synchroniza-
tion Settings section.
Clock Reference
This menu lets you set the Pro Tools clock refer-
ence.
When using a Digidesign SYNC I/O, the Clock
Reference selector lists all supported clock types
for the Digidesign synchronization interface.
When using Pro Tools|HD without a SYNC I/O,
choices include any currently-enabled digital
format or source available from your HD-series
I/O (such as AES, S/PDIF, or 1x Word arriving at
the Pro Tools|HD interface’s Word Clock In
port).
When using Pro Tools|24 MIX, the clock refer-
ence can be 256x Word Clock, or the references
supported by a SYNC I/O.
Positional Reference
Use this menu to set the time code source for
Pro Tools to use for positional reference.
Video Format
Use this menu to set the session for NTSC or PAL
format.
\Variable Speed Override (VSO)
Variable Speed Override (VSO) requires a
SYNC I/O.
◆ When a SYNC I/O is connected to a
Pro Tools|HD system, the VSO controls are lo-
cated in the SYNC Settings section of the Session
Setup window.
◆ When a SYNC I/O is connected to
Pro Tools|24 MIX or Pro Tools|24 system, the
Session Setup window expands to display addi-
tional controls for VSO, clock, and Positional
Reference.
VSO slider (Pro Tools 6.x)