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Video
Generating thumbnail cache files during video import
A thumbnail cache file will be created automatically before
the file is inserted in the Project window, if you activated
“Generate Thumbnail Cache on Import Video File” in the
Preferences (Editing–Video page).
A window will be displayed, showing you the progress
and the estimated time for the process.
The thumbnail cache file is being created.
After the cache file is created, the window will be closed
and the video clip is inserted as usual. When you now
start video playback and perform processor consuming
operations, the thumbnail file is used to display the video
frames in the Project window. When enough processor
power is available, the “real” calculated thumbnail frames
are displayed again.
Generating thumbnail cache files from within the Pool
When you have video files without thumbnail cache files
(e.g. if you did not create a thumbnail cache file during im-
port), you always have the possibility to generate the
thumbnail cache file at a later stage. This is done from
within the Pool.
Proceed as follows:
1. Open the Pool window and locate the video file you
want to create a thumbnail cache file for.
2. Right-click the file to open the context menu and se-
lect “Generate Thumbnail Cache”, or select “Generate
Thumbnail Cache” from the Media menu.
Just as when creating the file during import, the status window opens
(see above).
After the file is created, the window will be closed and the
thumbnail cache file is used when necessary, i.e. under
high load.
Editing a video file
Video clips are played back by events just as audio clips
are. You can use all the basic editing operations on video
events, just as with audio events. The following operations
are not possible on the video track:
• Drawing, Gluing, and Scrubbing.
Note that when you activate the Mute button for a video track, the video
playback will be stopped, but playback of any other Project events will
continue, see below.
• The video track has no editor and does not make use of
parts.
• Cubase AI allows you to cut, copy, paste and trim video
events, i.e. your video track may contain more than one
video event. However, when using the DirectShow video
player (Windows only), you may find that only the first event
on the video track is played back correctly. In such a case
make sure that the video track contains no more than one
video event.
• Under Windows, you may find that you are unable to
edit a video file copied from a CD. This is because files
copied from CD are write protected by default. Right-click
the file, and deactivate the “Read-Only” option in the File
Properties dialog.
• When you have a video file in a format not supported by
Cubase AI, use an external application to convert the file
to a format that Cubase AI can import.
!
Please note that the cache file will not be automati-
cally updated if a video file is edited. Whenever you
change a video file (e.g. in a video editing applica-
tion), you need to create a new thumbnail cache file
manually, as described above. (To refresh the “real”
thumbnails of an edited video file, resize the video
track so that they are calculated again.)