DRAGRI User Manual

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Saving the Content




Saving the content

Save the DRAGRI content file.

Select [File]-[Save as Web Content] from the menu bar in the main window. A Save configuration dialog box will appear as shown in the figure. The fields are described below:

Directory name

Enter the name of the destination directory for the file, or click [...] to display the file selection dialog box and select the directory in which to save the file.

To create a new directory, type "directory name" at the end of the path name.

If you click the [New] button, a dialog box for entering a directory name will appear. A new directory with the specified name will be created within the selected directory.

Image quality

JPEG
Set the JPEG compression ratio.
The created file is by default saved in the form of JPEG. You can specify the compression ratio of the JPEG file.
The highest quality is represented by the value 100.

As the value is decreased, the file size is reduced, but so is the quality.
If the compression ratio is too high (that is, a low figure in the JPEG image quality box), the image becomes difficult to recognize.
JPEG image quality = 75JPEG image quality = 30

Differential image compression
This is a DRAGRI-specific differential compression parameter.
DRAGRI compresses the content by not saving parts of the image where there is little variation. A value of 75 is a standard value.
As the value is decreased, the file size is reduced, but so is the quality.
If the content is played with a browser, block noise may appear when the image is dark or contains a large object of uniform tone or color, such as sky or wall.


Example of block noise

In any case, even if the numerical value is increased, the image quality will not become better than that of the original material, and the file can become larger unnecessarily. Adjust the differential compression parameter with care.

Expiration date

You can set an expiration date for the content. After the expiration date, the content cannot be viewed. The format is yyyy-mm-dd.

You can make the expiration date unlimited by leaving this field blank.

Save DRAGRI Operation data (dragri.txt)

This file contains the play data for the content. If you are creating a new content file, this box is already selected.

Save video/image/audio data

These items are usually used when existing content has been re-edited using dragri.txt.

If video, image or audio data have been added, or frame attributes of key frames or skip frames changed, or the number of frames changed as a result of a modification in frame reduction settings, the box is selected automatically. Usually, keep this as it is.

Archive data to data.jar

When you save a file with this box checked, a file named data.jar is created. This file aggregates all files except dragri.jar.

Since this file is compressed, download time can be saved when the file is viewed in a browser.

In some environments, you may not be able to access data.jar. In such a case, ordinary files are used instead. Accordingly, you should not delete the ordinary files even if you are using data.jar.

Save program data (dragri.jar)

This is a program file for playing the content in a browser. The browser reads in this file and executes the program.

This program is common to all content files.

Save index.html

This is to specify whether to generate the Web page file, index.html.

Template
Specify a template that provides the format of the Web page to be generated. For details, see "Changing the Page Layout for the Content."

Save thumbnail image

If you select [File]-[Save webpage], the image of the current frame specified on the timeline is saved as a thumbnail of the file.

The thumbnail image is saved under the name of thumb.jpg in the directory specified for saving the thumbnail image.

View page after saving

This is to specify whether to view the created content with a browser after you have saved it.

Save in ZIP file

All files required for playing the content are compressed into zip files.

They are saved under the name of "directory-name.zip" in the directory specified for saving the content.

Use this option when you want to upload the files to the Web server by FTP or attach the files to e-mail.




Adjusting the file size for the content

If the file size of the content is too large, downloading it takes a significant amount of time. Since large files will take up the memory available to a browser, the browser may not be able to play the content smoothly. A reasonable file size for the content is up to 500 kB. This is equivalent to about 50 frames with a frame size of 320 x 240 pixels.

Use the following methods to adjust the file size for optimum download.

Adjusting the image quality

If you decrease the values of [JPEG] and [Differential image compression] in [Image quality] when you save the Web page, this will reduce the file size.

The standard value for [JPEG] and [Differential image compression] is 75. However, if noise is noticeable when you check the content with a browser, increase the values slightly to get optimum image quality.

Adjusting the number of frames

The more frames in the video, the smoother the movement but the larger the file size.

You can reduce the file size by reducing the number of frames.

Adjusting the size (resolution) of a video

The size of a video also greatly affects the file size.

When the size of a video is reduced, the file size also becomes smaller.




File Types that are Saved

.jarA file that aggregates Java programs
.txtA file that records information necessary for playing the content
.htmlA Web page file
.gifAn image file
.jpgImage file or video file
.au An audio file
.zip Compressed content
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