Any or all of the following Timebase rulers can be displayed at the top of the Edit window and in MIDI Editor windows:
Displays the Time Scale in bars and beats. Use this Time Scale if you are working with musical material that must align with bars and beats. The Bars|Beats Time Scale is relative and is affected by the session’s tempo and meter map.
Displays the Time Scale in minutes and seconds. As you zoom in farther with the Zoomer tool, the Time Scale begins to display tenths, hundredths, and thousandths of a second. The Minutes:Seconds Time Scale is absolute.
Displays the Time Scale in SMPTE frames. The Timecode Rate and Session Start time are set from the Session Setup window. The Timecode Time Scale is absolute, based on the frame rate.
Pro Tools supports the following frame rates:
A secondary timecode ruler, labeled Time Code 2, lets you reference video frame rates in the Timeline that are different from the session Timecode rate. However, you
cannot Spot to the Timecode 2 ruler and it
cannot be set as the Main Time Scale. The secondary timecode ruler can be set to show any Pro Tools supported frame rate. The Timecode 2 ruler can also display the following additional frame rates:
Displays the Time Scale in feet and frames for referencing audio-for-film projects. The Feet+Frames time display is based on the 35 millimeter film format. The Feet+Frames Time Scale is absolute, based on the frame rate.
Displays the Time Scale in samples. This format is very useful for high-precision sample editing. The Samples Time Scale is absolute, based on the sample rate.
In addition to providing a timing reference for track material, the Timebase rulers are also used to define
Edit selections for track material, and
Timeline selections for record and play ranges.