User`s guide

File Operations on Virtual Clips
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File Operations on Virtual Clips
This section describes the MVCP commands you use to create, open, save, close, or
remove virtual clips. This section also describes how to build a non-virtual clip.
Creating and Opening Virtual Clips
To create a virtual clip, use the MVCP command CMK. The syntax and arguments for CMK
and the related command COPN are described briefly as follows:
CMK clip-name format-name
COPN clip-name
clip-name Specifies the name of the clip to create.
format-name Specifies the name of a segmented format. The only segmented format
supported is movie/vclip.
CMK creates a fetal clip. A fetal clip is not visible in the clip cache nor can it be used for
playout until clip segments are assigned using the CUPS command. A fetal clip has
minimal state and serves as the foundation for vclip editing operations. The COPN
command opens virtual or non-virtual clips for subsequent edit operations.
It is important to note that a fetal virtual clip cannot be deleted unless it contains at least
one segment and has been previously closed, thus promoting it out of the fetal state into
the clip cache. A fetal clip without one segment is termed incomplete; VST cannot process
incomplete fetal clips. Attempted deletion of an incomplete fetal clip leaves an
unmanageable entry, which cannot be cleared without a VST restart. Attempts to reuse a
deleted, incomplete fetal clip will fail.
Building a Non-Virtual Clip
To create a non-virtual clip, use the CBLD command. This command physically copies the
referenced segments from a virtual clip into a continous, non-virtual clip and assigns an
arbitrary timecode for a non-virtual clip start. The syntax of the CBLD command is as
follows:
CBLD clip-name new-clip [start]