User`s guide

Chapter 24: Time Code Synchronization 345
5 If there are existing regions on the tracks
and you are changing the original SMPTE
start frame to an earlier time, do one of the
following:
■ Click Maintain Time Code to place the
additional session time at the start of the
session, and keep existing regions in their
original time code locations.
– or –
■ Click Maintain Relative Position to place
the additional session time at the start of
the session, and maintain the relative posi-
tion of existing regions to the new start
frame. For example, if you change the ses-
sion start frame from 01:00:00:00 to
00:59:00:00, Pro Tools adds one minute of
session time to accommodate the new start
frame, and moves all existing regions ear-
lier in time to maintain their relative posi-
tion to the start frame.
Displaying Time in SMPTE
Frames
(TDM Systems Only)
You can set the Main Current Location In-
dicator to Time Code to. Though Pro Tools
will still synchronize to incoming SMPTE
time code if the Time Scale is displayed in
Bars|Beats, Minutes:Seconds, or
Feet.Frames, it is usually more useful to use
SMPTE Time Code as your reference.
To set the Main Time Scale to SMPTE Time
Code:
■ Choose Display > Time Code
– or –
■ Click the Main Time Format selector in
the Edit window, and select Time Code.
Pro Tools will display time code values in
the currently selected SMPTE frame rate.
Sub Time Scale Display
You can also display a Sub Time Scale. For
example, if your Main Time Format is set to
Time Code, and you want to compare
SMPTE time to “wall clock,” when you are
using 29.97 Non-Drop frame rate, you can
select Min:Secs as the Sub Time Format dis-
play.
Configuring Pull Up/Pull Down
using a USD or SSD
If you have a Digidesign USD or SSD and
are working with material that has been
pulled down or up, do the following:
To work with a pull down/up sample rate:
1 Choose Setups > Peripherals and click
Synchronization.
2 Choose the Universal Slave Driver or
SMPTE Slave Driver from the Device pop-
up menu and select the appropriate port
from the Port pop-up menu.
Selecting a Time Scale format