2
Choose Project > Unlink Media.
3
Select one of the following options, and click OK:
•
Media Files Remain On Disk makes the selected files offline in the project but doesn’t
erase the source files from the disk.
Using Help | Contents | Index Back 89
Adobe Premiere Pro Help Capturing and Importing Source Clips
Using Help | Contents | Index Back 89
•
Media Files Are Deleted makes the selected files offline in the project and erases the
source files from the disk.
Note: If you select Media Files Remain On Disk and recapture a clip using the same
filename as the file left on disk, the original media file is replaced. To preserve original
clips
without changing their names, move them to another folder or disk, or specify a different
filename for the clips you recapture.
Analyzing clip properties and data rate
Adobe Premiere Pro includes clip analysis tools that you can use to evaluate a file in any
supported format stored inside or outside a project. For example, after producing a video
clip to be streamed from a Web server, you can use clip analysis tools to determine
whether a clip you exported has an appropriate data rate for Internet distribution.
The Properties feature provides detailed information about any clip. For video files,
analyzed properties can include the file size, number of video and audio tracks, duration,
average frame rate, audio sample rate, video data rate, and compression settings. You
can
also use the Properties feature to alert you to the presence of any dropped frames in a clip
you just captured. Use the data rate graph to evaluate how well the output data rate
matches the requirements of your delivery medium. It charts each frame of a video file to
show you the render keyframe rate, the difference between compression keyframes and
differenced frames (frames that exist between keyframes), and data rate levels at each
frame. The graph includes the following:
Data rate
The line represents the average data rate.
Sample size
The red bars represent the sample size of each keyframed frame.
Differenced frames sample size
The blue bars represent the sample size of the
differenced
frames between compression keyframes.
To see the properties of a clip:
1
Do one of the following:
•
If the clip is in the Project window, select it to display a subset of its properties in the
preview area at the top of the Project window.
•
If the clip is in the Source view, Timeline window, or Project window, select it and
choose File > Get Properties For > Selection.
•
If the clip is not in the project, choose File > Get Properties For > File. Locate and select
the clip you want to analyze, and then click Open.
2
When you are finished, close the Properties window.
You can also view clip properties in the Source view, Timeline window, or Project
window by right-clicking a clip and choosing Properties from the context menu.
Using timecode for efficient capture
DV cameras and high-end video decks record
timecode
, which marks specific frames
precisely. Timecode is important whenever you want to capture exactly the same frames
that were identified or captured previously, as in the following tasks:
•
You want to log clips before you capture them.
