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About 24P timecode
When you import 24P footage, Adobe Premiere Pro treats it as 23.976 fps progressive scan footage. Because of this,
when you work with 24P footage in a 24P project, the timecode is displayed as 24 fps. However, the camera records
and logs 24P footage in 30 fps nondrop-frame timecode. When you log 24P footage for capture, you log clips
according to the camera's timecode count of 30 fps nondrop-frame timecode.
For example, a clip that you log for capture may have an In point of 00:01:00:28. However, as an offline clip in a 24P
project, the In point is shown as 00:01:00:23. In addition, mixing non-drop-frame footage with drop-frame footage
can cause larger differences in timecode display between the project and the clip, with minutes, seconds, and entire
durations seemingly out of sync. Be aware of these discrepancies as you edit.
To display 24P source timecode
If you use 30 fps nondrop-frame timecode for projects containing 24P footage, Adobe Premiere Pro drops every fifth
frame from the 24P footage timecode count. When you view the properties of your 24P clip, the frame rate is shown
as 23.976, but the timebase as 29.97. If you' d prefer to read a clip's original timecode, do the following:
Right-click the clip in the Project panel.
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Select Interpret Footage > Use Frame Rate from File.
Improving performance
About scratch disks
When you edit a project, Adobe Premiere Pro uses disk space to store files required by your project, such as captured
video and audio, conformed audio, and preview files that you create manually or that are created automatically when
exporting to certain formats. Adobe Premiere Pro uses conformed audio files and preview files to optimize perfor-
mance, allowing real-time editing, 32-bit floating-point quality, and efficient output.
All scratch disk files are preserved across work sessions. If you delete preview files or conformed audio files, Adobe
Premiere Pro automatically recreates them.
By default, scratch disk files are stored where you save the project. The scratch disk space required increases as
sequences become longer or more complex. For best performance, it is recommended that you dedicate a hard drive
or drives strictly to your media assets. Specify these dedicated disks as your scratch disks. If your system has multiple
disks, you can use the Edit > Preferences > Scratch Disks command to specify which disks Adobe Premiere Pro uses
for media files. This is best done when you set up a new project.
In terms of performance, it's usually best to dedicate a different disk to each asset type, but you can also specify
folders on the same disk. You can specify unique scratch disk locations for the following types of file:
Video files that you create using File > Capture.
Captured Video
Audio files that you create using File > Capture.
Captured Audio
Files created when you use the Sequence > Render Work Area command, export to a movie file, or
Video Previews
export to a device. If the previewed area includes effects, the effects are rendered at full quality in the preview file.
Files created when you use the Sequence > Render Work Area command, use the Clip > Audio
Audio Previews
Options > Render And Replace command, export to a movie file, or export to a DV device. If the previewed area
includes effects, they are rendered at full quality in the preview file.
ADOBE PREMIERE PRO 2.0
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