User Manual

Chapter 57: Working with Synchronization 1279
Audio Rates and Pull Up/Down Options
The following table lists actual sample rates of each pull up and pull down option and combination
(rounded to the nearest whole Hz):
Video Frame Rate Pull Up and
Down
The Video Pull Up/Down setting lets you change
the frame rate of video playback independently
from the audio pull up/down rate. Note that video
pull rates are saved with the session.
The choices available for
Video Rate Pull Up/Down
depend on the file format and frame rate of the
video, and whether or not you are using video
hardware.
With no video hardware, Pro Tools supports 0.1%
pull up and pull down at all project frame rates
when monitoring video in the Pro Tools Video
window.
However, when monitoring with video hardware,
certain frame rates only support pull in certain di-
rections (as follows):
• 23pNTSC can only pull up by 0.1%
• 24pNTSC can only pull down by 0.1%
• 24pPAL can only pull up by 4%
• 25pPAL can only pull down by 4%
Sample Rates at Pull Up and Pull Down Settings
Pull
Up/Down
Sample Rate
44100 48000 88200 96000 176400 192000
+4.1667%
and +0.1%
45983 50050 91967 100100 n/a n/a
+4.1667% 45938 50000 91875 100000 n/a n/a
+4.1667%
and –0.1%
45892 49950 91783 99900 n/a n/a
+0.1% 44144 48048 88288 96096 176576 192192
–0.1% 44056 47952 88112 95904 176224 191808
–4.0% and
+0.1%
42378 46126 84757 92252 n/a n/a
–4.0% 42336 46080 84672 92160 n/a n/a
–4.0% and
–0.1%
42294 46034 84587 92068 n/a n/a
See also “Auto Match Pull Factors” on
page 1278.