Ulead MEDIASTUDIO PRO 6.0 Guide de l'utilisateur télécharger pdf (Page 95)

VIDEO CAPTURE: CHAPTER TWO

If your video source contains simple images with few significant

changes, you only need to specify a low value, such as 5. If colors

change rapidly, specify a higher value. Generally, the more frames you

select, the greater the range of colors held in the palette. (You can

select from 1 to 100 frames.)

3. Select a capturing option from the Mode group box. If you want Video

Capture to capture the frames for you, select the Auto option and enter

a value for the duration between captures. For example, if you specify

two seconds, a frame is captured every two seconds. (You can specify

an interval from 1 to 100 seconds.) If you want to capture specific

frames, select Manual.

4. Click OK. If you selected Auto as your capture option, Video Capture

begins capturing frames at the specified rate. If you selected the

Manual option, the Manual Capture dialog box opens with two buttons,

Next and Cancel. Click on Next to capture one frame: Cancel to end

the capturing.

When the capturing process is completed, a palette is generated from the

optimum combination of colors based on the captured frames. Once

defined, the color palette is stored in memory until you capture a new

color palette or close Video Capture. If you wish to save the palette for

later use, click Palette: Save Palette. To load it back into a video se-

quence, click Palette: Load Palette.

Note:

You can also copy and paste palettes using the Palette: Copy Palette and

Paste Palette commands. (These commands are disabled if the active video is not

Indexed-256 Color or the data on the clipboard is not palette data.)

Changing a file’s properties

Whenever you capture a video sequence, you must first specify a file in

which to save the resulting video. There will be times, however, when you

wish to save this video again to change its attributes, such as frame rate or

the compression scheme. (This is particularly true if you have a hardware

compressed file, such as MJPEG or MPEG, and you wish to play it back

on another machine which does not have the same hardware setup.)

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Ulead MEDIASTUDIO PRO 6.0 Guide de l'utilisateur Page 95