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Video images and memory allocation
When you display video images using Video Monitor or another program, the
video images use a portion of the computer’s screen memory (also called
video RAM, or VRAM).
If you see a message in the Monitor window stating that video is turned off,
you need to set the monitor to display fewer colors or grays. This allows the
computer to allocate additional memory to the video image.
You use the Monitors control panel to change the number of colors or grays
displayed. See the Macintosh Reference for instructions.
Capturing one frame of a video image
You can capture a single video frame to use in presentations or documents.
Follow these steps:
1Display a video image on the screen, using the Video Monitor program.
See “Opening a Video Window on the Screen” earlier in this chapter.
2Choose Copy from the Edit menu.
One frame of the video image will be copied to the Clipboard or saved as a
PICT file (a common graphics format). You can then paste the frame into a
graphics program, edit it, and save it.
If you see a message that there is not enough memory to copy the frame, try
reducing the size of the video window.
IMPORTANT
Prerecorded videotapes, broadcast video programs, and other
prerecorded images, movies, and sound, whether in video, audio, or digital
form, may be proprietary and protected by copyright. If you want to use
prerecorded materials, you may need to obtain the consent of the copyright
owner or seek the advice of a lawyer.
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Chapter 8